diff --git a/keyboards/acheron/themis/87h/87h.c b/keyboards/acheron/themis/87h/87h.c
new file mode 100644
index 000000000000..dada30ff873f
--- /dev/null
+++ b/keyboards/acheron/themis/87h/87h.c
@@ -0,0 +1,25 @@
+/* Copyright 2023 Gondolindrim <gondolindrim@acheronproject.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "quantum.h"
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    if(res) {
+        led_state.caps_lock ? rgblight_setrgb_at(0xAA,0xAA,0xAA,0) : rgblight_setrgb_at(0x00,0x00,0x00,0) ;
+    }
+    return res;
+}
diff --git a/keyboards/acheron/themis/87h/config.h b/keyboards/acheron/themis/87h/config.h
new file mode 100644
index 000000000000..8a1ff4858323
--- /dev/null
+++ b/keyboards/acheron/themis/87h/config.h
@@ -0,0 +1,33 @@
+/*
+Copyright 2023 Gondolindrim <gondolindrim@acheronproject.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#define LOCKING_SUPPORT_ENABLE
+#define LOCKING_RESYNC_ENABLE
+
+#define RGBLED_NUM 1
+
+#define WS2812_PWM_COMPLEMENTARY_OUTPUT
+#define WS2812_PWM_DRIVER PWMD1
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#define WS2812_DMA_CHANNEL 6
+
+#define WEAR_LEVELING_LOGICAL_SIZE 4096
+#define WEAR_LEVELING_BACKING_SIZE 8192
diff --git a/keyboards/acheron/themis/87h/halconf.h b/keyboards/acheron/themis/87h/halconf.h
new file mode 100644
index 000000000000..485d48ef3067
--- /dev/null
+++ b/keyboards/acheron/themis/87h/halconf.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define HAL_USE_PWM TRUE
+#define HAL_USE_PAL TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/acheron/themis/87h/info.json b/keyboards/acheron/themis/87h/info.json
new file mode 100644
index 000000000000..ed5d48690d30
--- /dev/null
+++ b/keyboards/acheron/themis/87h/info.json
@@ -0,0 +1,136 @@
+{
+    "keyboard_name": "Themis 87H Rev. Alpha",
+    "usb": {
+        "pid": "0x5448",
+        "device_version": "0.0.1"
+    },
+    "matrix_pins": {
+        "cols": ["A8" ,"C9" ,"C8" ,"B14","B12","B10","B1" ,"B0" ,"A7" ,"A6" ,"A5" ,"A4" ,"C5" ,"C7" ,"B3" ,"A2" ,"C12","D2" ],
+        "rows": ["A15","A10","C6" ,"C4" ,"A3" ,"A1" ,"C11","C10","B4"]
+    },
+    "features": {
+        "bootmagic": true,
+        "lto":       true,
+        "mousekey":  true,
+        "extrakey":  true,
+        "console":   false,
+        "backlight": false,
+        "rgblight":  true,
+        "audio":     false,
+        "encoder":   false,
+        "nkro":      true
+    },
+    "diode_direction": "COL2ROW",
+    "ws2812": {
+        "pin": "B15"
+    },
+    "processor": "STM32F401",
+    "bootloader": "stm32-dfu",
+    "community_layouts": ["tkl_ansi"],
+    "layouts": {
+        "LAYOUT_tkl_ansi": {
+            "layout": [
+                {"label":"Escape", "matrix": [0, 0], "x": 0, "y": 0},
+
+                {"label":"F1", "matrix": [0, 1], "x": 2, "y": 0},
+                {"label":"F2", "matrix": [0, 2], "x": 3, "y": 0},
+                {"label":"F3", "matrix": [0, 3], "x": 4, "y": 0},
+                {"label":"F4", "matrix": [0, 4], "x": 5, "y": 0},
+
+                {"label":"F5", "matrix": [0, 5], "x": 6.5, "y": 0},
+                {"label":"F6", "matrix": [0, 6], "x": 7.5, "y": 0},
+                {"label":"F7", "matrix": [0, 7], "x": 8.5, "y": 0},
+                {"label":"F8", "matrix": [0, 8], "x": 9.5, "y": 0},
+
+                {"label":"F9", "matrix": [0, 9], "x": 11, "y": 0},
+                {"label":"F10", "matrix": [0, 10], "x": 12, "y": 0},
+                {"label":"F11", "matrix": [0, 11], "x": 13, "y": 0},
+                {"label":"F12", "matrix": [0, 12], "x": 14, "y": 0},
+
+                {"label":"Print Screen", "matrix": [6, 14], "x": 15.25, "y": 0},
+                {"label":"Scroll Lock", "matrix": [6, 17], "x": 16.25, "y": 0},
+                {"label":"Pause", "matrix": [6, 16], "x": 17.25, "y": 0},
+
+                {"label":"`~", "matrix": [1, 0], "x": 0, "y": 1.25},
+                {"label":"1!", "matrix": [1, 1], "x": 1, "y": 1.25},
+                {"label":"2@", "matrix": [1, 2], "x": 2, "y": 1.25},
+                {"label":"3#", "matrix": [1, 3], "x": 3, "y": 1.25},
+                {"label":"4$", "matrix": [1, 4], "x": 4, "y": 1.25},
+                {"label":"5%", "matrix": [1, 5], "x": 5, "y": 1.25},
+                {"label":"6^", "matrix": [1, 6], "x": 6, "y": 1.25},
+                {"label":"7&", "matrix": [1, 7], "x": 7, "y": 1.25},
+                {"label":"8*", "matrix": [1, 8], "x": 8, "y": 1.25},
+                {"label":"9(", "matrix": [1, 9], "x": 9, "y": 1.25},
+                {"label":"0)", "matrix": [1, 10], "x": 10, "y": 1.25},
+                {"label":"-_", "matrix": [1, 11], "x": 11, "y": 1.25},
+                {"label":"=+", "matrix": [1, 12], "x": 12, "y": 1.25},
+                {"label":"Backspace", "matrix": [1, 13], "x": 13, "y": 1.25, "w": 2},
+
+                {"label":"Insert", "matrix": [7, 14], "x": 15.25, "y": 1.25},
+                {"label":"Home", "matrix": [7, 17], "x": 16.25, "y": 1.25},
+                {"label":"Page Up","matrix": [7, 16], "x": 17.25, "y": 1.25},
+
+                {"label":"Tab", "matrix": [2, 0], "x": 0, "y": 2.25, "w": 1.5},
+                {"label":"Q", "matrix": [2, 1], "x": 1.5, "y": 2.25},
+                {"label":"W", "matrix": [2, 2], "x": 2.5, "y": 2.25},
+                {"label":"E", "matrix": [2, 3], "x": 3.5, "y": 2.25},
+                {"label":"R", "matrix": [2, 4], "x": 4.5, "y": 2.25},
+                {"label":"T", "matrix": [2, 5], "x": 5.5, "y": 2.25},
+                {"label":"Y", "matrix": [2, 6], "x": 6.5, "y": 2.25},
+                {"label":"U", "matrix": [2, 7], "x": 7.5, "y": 2.25},
+                {"label":"I", "matrix": [2, 8], "x": 8.5, "y": 2.25},
+                {"label":"O", "matrix": [2, 9], "x": 9.5, "y": 2.25},
+                {"label":"P", "matrix": [2, 10], "x": 10.5, "y": 2.25},
+                {"label":"[{", "matrix": [2, 11], "x": 11.5, "y": 2.25},
+                {"label":"]}", "matrix": [2, 12], "x": 12.5, "y": 2.25},
+                {"label":"\\|", "matrix": [2, 13], "x": 13.5, "y": 2.25, "w": 1.5},
+
+                {"label":"Delete", "matrix": [8, 14], "x": 15.25, "y": 2.25},
+                {"label":"End", "matrix": [8, 17], "x": 16.25, "y": 2.25},
+                {"label":"Page Down", "matrix": [8, 16], "x": 17.25, "y": 2.25},
+
+                {"label":"Caps Lock", "matrix": [3, 0], "x": 0, "y": 3.25, "w": 1.75},
+                {"label":"A", "matrix": [3, 1], "x": 1.75, "y": 3.25},
+                {"label":"S", "matrix": [3, 2], "x": 2.75, "y": 3.25},
+                {"label":"D", "matrix": [3, 3], "x": 3.75, "y": 3.25},
+                {"label":"F", "matrix": [3, 4], "x": 4.75, "y": 3.25},
+                {"label":"G", "matrix": [3, 5], "x": 5.75, "y": 3.25},
+                {"label":"H", "matrix": [3, 6], "x": 6.75, "y": 3.25},
+                {"label":"J", "matrix": [3, 7], "x": 7.75, "y": 3.25},
+                {"label":"K", "matrix": [3, 8], "x": 8.75, "y": 3.25},
+                {"label":"L", "matrix": [3, 9], "x": 9.75, "y": 3.25},
+                {"label":";:", "matrix": [3, 10], "x": 10.75, "y": 3.25},
+                {"label":"\'\"", "matrix": [3, 11], "x": 11.75, "y": 3.25},
+                {"label":"Enter", "matrix": [3, 12], "x": 12.75, "y": 3.25, "w": 2.25},
+
+                {"label":"Shift", "matrix": [4, 0], "x": 0, "y": 4.25, "w": 2.25},
+                {"label":"Z", "matrix": [4, 2], "x": 2.25, "y": 4.25},
+                {"label":"X", "matrix": [4, 3], "x": 3.25, "y": 4.25},
+                {"label":"C", "matrix": [4, 4], "x": 4.25, "y": 4.25},
+                {"label":"V", "matrix": [4, 5], "x": 5.25, "y": 4.25},
+                {"label":"B", "matrix": [4, 6], "x": 6.25, "y": 4.25},
+                {"label":"N", "matrix": [4, 7], "x": 7.25, "y": 4.25},
+                {"label":"M", "matrix": [4, 8], "x": 8.25, "y": 4.25},
+                {"label":",<", "matrix": [4, 9], "x": 9.25, "y": 4.25},
+                {"label":".>", "matrix": [4, 10], "x": 10.25, "y": 4.25},
+                {"label":"/?", "matrix": [4, 11], "x": 11.25, "y": 4.25},
+                {"label":"Shift", "matrix": [4, 12], "x": 12.25, "y": 4.25, "w": 2.75},
+
+                {"label":"Up",  "matrix": [4, 15], "x": 16.25, "y": 4.25},
+
+                {"label":"LCtrl", "matrix": [5, 0], "x": 0, "y": 5.25, "w": 1.25},
+                {"label":"Lwin", "matrix": [5, 1], "x": 1.25, "y": 5.25, "w": 1.25},
+                {"label":"LAlt", "matrix": [5, 2], "x": 2.5, "y": 5.25, "w": 1.25},
+                {"label":"Space", "matrix": [5, 6], "x": 3.75, "y": 5.25, "w": 6.25},
+                {"label":"RAlt", "matrix": [5, 9], "x": 10, "y": 5.25, "w": 1.25},
+                {"label":"RWin", "matrix": [5, 10], "x": 11.25, "y": 5.25, "w": 1.25},
+                {"label":"MO(1)", "matrix": [5, 11], "x": 12.5, "y": 5.25, "w": 1.25},
+                {"label":"RCtrl", "matrix": [5, 12], "x": 13.75, "y": 5.25, "w": 1.25},
+
+                {"label":"Left", "matrix": [5, 14], "x": 15.25, "y": 5.25},
+                {"label":"Down", "matrix": [5, 15], "x": 16.25, "y": 5.25},
+                {"label":"Right", "matrix": [5, 16], "x": 17.25, "y": 5.25}
+            ]
+        }
+    }
+}
diff --git a/keyboards/acheron/themis/87h/keymaps/default/keymap.c b/keyboards/acheron/themis/87h/keymaps/default/keymap.c
new file mode 100755
index 000000000000..4728331f05ff
--- /dev/null
+++ b/keyboards/acheron/themis/87h/keymaps/default/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2020 Álvaro "Gondolindrim" Volpato <alvaro.volpato@usp.br>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   [0] = LAYOUT_tkl_ansi(
+        KC_ESC , KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  , KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,          KC_PSCR, KC_SCRL, KC_PAUS , 
+        KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   , KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_MINS, KC_EQL , KC_BSPC, KC_INS , KC_HOME, KC_PGUP ,
+        KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL , KC_END , KC_PGDN ,
+        KC_CAPS, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
+	KC_LSFT,          KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC ,                   KC_RALT, MO(1)  , KC_RGUI, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+	),
+   [1] = LAYOUT_tkl_ansi(
+        QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_HUI, RGB_SAI, RGB_VAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS,          RGB_TOG, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, RGB_SPD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,           KC_TRNS, KC_TRNS, KC_TRNS
+        )
+};
diff --git a/keyboards/acheron/themis/87h/keymaps/via/keymap.c b/keyboards/acheron/themis/87h/keymaps/via/keymap.c
new file mode 100755
index 000000000000..4728331f05ff
--- /dev/null
+++ b/keyboards/acheron/themis/87h/keymaps/via/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2020 Álvaro "Gondolindrim" Volpato <alvaro.volpato@usp.br>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   [0] = LAYOUT_tkl_ansi(
+        KC_ESC , KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  , KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,          KC_PSCR, KC_SCRL, KC_PAUS , 
+        KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   , KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_MINS, KC_EQL , KC_BSPC, KC_INS , KC_HOME, KC_PGUP ,
+        KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL , KC_END , KC_PGDN ,
+        KC_CAPS, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
+	KC_LSFT,          KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC ,                   KC_RALT, MO(1)  , KC_RGUI, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+	),
+   [1] = LAYOUT_tkl_ansi(
+        QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_HUI, RGB_SAI, RGB_VAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS,          RGB_TOG, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, RGB_SPD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,           KC_TRNS, KC_TRNS, KC_TRNS
+        )
+};
diff --git a/keyboards/acheron/themis/87h/keymaps/via/rules.mk b/keyboards/acheron/themis/87h/keymaps/via/rules.mk
new file mode 100644
index 000000000000..1e5b99807cb7
--- /dev/null
+++ b/keyboards/acheron/themis/87h/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/acheron/themis/87h/mcuconf.h b/keyboards/acheron/themis/87h/mcuconf.h
new file mode 100644
index 000000000000..3d1d05c307c4
--- /dev/null
+++ b/keyboards/acheron/themis/87h/mcuconf.h
@@ -0,0 +1,25 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PWM_USE_ADVANCED
+#define STM32_PWM_USE_ADVANCED TRUE
+
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1 TRUE
diff --git a/keyboards/acheron/themis/87h/rules.mk b/keyboards/acheron/themis/87h/rules.mk
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/keyboards/acheron/themis/87htsc/87htsc.c b/keyboards/acheron/themis/87htsc/87htsc.c
new file mode 100644
index 000000000000..dada30ff873f
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/87htsc.c
@@ -0,0 +1,25 @@
+/* Copyright 2023 Gondolindrim <gondolindrim@acheronproject.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "quantum.h"
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    if(res) {
+        led_state.caps_lock ? rgblight_setrgb_at(0xAA,0xAA,0xAA,0) : rgblight_setrgb_at(0x00,0x00,0x00,0) ;
+    }
+    return res;
+}
diff --git a/keyboards/acheron/themis/87htsc/config.h b/keyboards/acheron/themis/87htsc/config.h
new file mode 100644
index 000000000000..8a1ff4858323
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/config.h
@@ -0,0 +1,33 @@
+/*
+Copyright 2023 Gondolindrim <gondolindrim@acheronproject.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#define LOCKING_SUPPORT_ENABLE
+#define LOCKING_RESYNC_ENABLE
+
+#define RGBLED_NUM 1
+
+#define WS2812_PWM_COMPLEMENTARY_OUTPUT
+#define WS2812_PWM_DRIVER PWMD1
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#define WS2812_DMA_CHANNEL 6
+
+#define WEAR_LEVELING_LOGICAL_SIZE 4096
+#define WEAR_LEVELING_BACKING_SIZE 8192
diff --git a/keyboards/acheron/themis/87htsc/halconf.h b/keyboards/acheron/themis/87htsc/halconf.h
new file mode 100644
index 000000000000..485d48ef3067
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/halconf.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define HAL_USE_PWM TRUE
+#define HAL_USE_PAL TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/acheron/themis/87htsc/info.json b/keyboards/acheron/themis/87htsc/info.json
new file mode 100644
index 000000000000..854ad5a7d58e
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/info.json
@@ -0,0 +1,135 @@
+{
+    "keyboard_name": "Themis 87H-T-SC Rev. Alpha",
+    "usb": {
+        "pid": "0x5449",
+        "device_version": "0.0.1"
+    },
+    "matrix_pins": {
+        "cols": ["A8" ,"C9" ,"C8" ,"B14","B12","B10","B1" ,"B0" ,"A7" ,"A6" ,"A5" ,"A4" ,"C5" ,"C7" ,"B3" ,"A2" ,"C12","D2" ],
+        "rows": ["A15","A10","C6" ,"C4" ,"A3" ,"A1" ,"C11","C10","B4"]
+    },
+    "features": {
+        "bootmagic": true,
+        "lto":       true,
+        "mousekey":  true,
+        "extrakey":  true,
+        "console":   false,
+        "backlight": false,
+        "rgblight":  true,
+        "audio":     false,
+        "encoder":   false,
+        "nkro":      true
+    },
+    "diode_direction": "COL2ROW",
+    "ws2812": {
+        "pin": "B15"
+    },
+    "processor": "STM32F401",
+    "bootloader": "stm32-dfu",
+    "community_layouts": ["tkl_ansi_tsangan"],
+    "layouts": {
+        "LAYOUT_tkl_ansi_tsangan": {
+            "layout": [
+                {"label":"Escape", "matrix": [0, 0], "x": 0, "y": 0},
+
+                {"label":"F1", "matrix": [0, 1], "x": 2, "y": 0},
+                {"label":"F2", "matrix": [0, 2], "x": 3, "y": 0},
+                {"label":"F3", "matrix": [0, 3], "x": 4, "y": 0},
+                {"label":"F4", "matrix": [0, 4], "x": 5, "y": 0},
+
+                {"label":"F5", "matrix": [0, 6], "x": 6.5, "y": 0},
+                {"label":"F6", "matrix": [0, 7], "x": 7.5, "y": 0},
+                {"label":"F7", "matrix": [0, 8], "x": 8.5, "y": 0},
+                {"label":"F8", "matrix": [0, 9], "x": 9.5, "y": 0},
+
+                {"label":"F9", "matrix": [0, 10], "x": 11, "y": 0},
+                {"label":"F10", "matrix": [0, 11], "x": 12, "y": 0},
+                {"label":"F11", "matrix": [0, 12], "x": 13, "y": 0},
+                {"label":"F12", "matrix": [0, 13], "x": 14, "y": 0},
+
+                {"label":"Print Screen", "matrix": [6, 14], "x": 15.25, "y": 0},
+                {"label":"Scroll Lock", "matrix": [6, 17], "x": 16.25, "y": 0},
+                {"label":"Pause", "matrix": [6, 16], "x": 17.25, "y": 0},
+
+                {"label":"`~", "matrix": [1, 0], "x": 0, "y": 1.25},
+                {"label":"1!", "matrix": [1, 1], "x": 1, "y": 1.25},
+                {"label":"2@", "matrix": [1, 2], "x": 2, "y": 1.25},
+                {"label":"3#", "matrix": [1, 3], "x": 3, "y": 1.25},
+                {"label":"4$", "matrix": [1, 4], "x": 4, "y": 1.25},
+                {"label":"5%", "matrix": [1, 5], "x": 5, "y": 1.25},
+                {"label":"6^", "matrix": [1, 6], "x": 6, "y": 1.25},
+                {"label":"7&", "matrix": [1, 7], "x": 7, "y": 1.25},
+                {"label":"8*", "matrix": [1, 8], "x": 8, "y": 1.25},
+                {"label":"9(", "matrix": [1, 9], "x": 9, "y": 1.25},
+                {"label":"0)", "matrix": [1, 10], "x": 10, "y": 1.25},
+                {"label":"-_", "matrix": [1, 11], "x": 11, "y": 1.25},
+                {"label":"=+", "matrix": [1, 12], "x": 12, "y": 1.25},
+                {"label":"Backspace", "matrix": [1, 13], "x": 13, "y": 1.25, "w": 2},
+
+                {"label":"Insert", "matrix": [7, 14], "x": 15.25, "y": 1.25},
+                {"label":"Home", "matrix": [7, 17], "x": 16.25, "y": 1.25},
+                {"label":"Page Up","matrix": [7, 16], "x": 17.25, "y": 1.25},
+
+                {"label":"Tab", "matrix": [2, 0], "x": 0, "y": 2.25, "w": 1.5},
+                {"label":"Q", "matrix": [2, 1], "x": 1.5, "y": 2.25},
+                {"label":"W", "matrix": [2, 2], "x": 2.5, "y": 2.25},
+                {"label":"E", "matrix": [2, 3], "x": 3.5, "y": 2.25},
+                {"label":"R", "matrix": [2, 4], "x": 4.5, "y": 2.25},
+                {"label":"T", "matrix": [2, 5], "x": 5.5, "y": 2.25},
+                {"label":"Y", "matrix": [2, 6], "x": 6.5, "y": 2.25},
+                {"label":"U", "matrix": [2, 7], "x": 7.5, "y": 2.25},
+                {"label":"I", "matrix": [2, 8], "x": 8.5, "y": 2.25},
+                {"label":"O", "matrix": [2, 9], "x": 9.5, "y": 2.25},
+                {"label":"P", "matrix": [2, 10], "x": 10.5, "y": 2.25},
+                {"label":"[{", "matrix": [2, 11], "x": 11.5, "y": 2.25},
+                {"label":"]}", "matrix": [2, 12], "x": 12.5, "y": 2.25},
+                {"label":"\\|", "matrix": [2, 13], "x": 13.5, "y": 2.25, "w": 1.5},
+
+                {"label":"Delete", "matrix": [8, 14], "x": 15.25, "y": 2.25},
+                {"label":"End", "matrix": [8, 17], "x": 16.25, "y": 2.25},
+                {"label":"Page Down", "matrix": [8, 16], "x": 17.25, "y": 2.25},
+
+                {"label":"Caps Lock", "matrix": [3, 0], "x": 0, "y": 3.25, "w": 1.75},
+                {"label":"A", "matrix": [3, 1], "x": 1.75, "y": 3.25},
+                {"label":"S", "matrix": [3, 2], "x": 2.75, "y": 3.25},
+                {"label":"D", "matrix": [3, 3], "x": 3.75, "y": 3.25},
+                {"label":"F", "matrix": [3, 4], "x": 4.75, "y": 3.25},
+                {"label":"G", "matrix": [3, 5], "x": 5.75, "y": 3.25},
+                {"label":"H", "matrix": [3, 6], "x": 6.75, "y": 3.25},
+                {"label":"J", "matrix": [3, 7], "x": 7.75, "y": 3.25},
+                {"label":"K", "matrix": [3, 8], "x": 8.75, "y": 3.25},
+                {"label":"L", "matrix": [3, 9], "x": 9.75, "y": 3.25},
+                {"label":";:", "matrix": [3, 10], "x": 10.75, "y": 3.25},
+                {"label":"\'\"", "matrix": [3, 11], "x": 11.75, "y": 3.25},
+                {"label":"Enter", "matrix": [3, 12], "x": 12.75, "y": 3.25, "w": 2.25},
+
+                {"label":"Shift", "matrix": [4, 0], "x": 0, "y": 4.25, "w": 2.25},
+                {"label":"Z", "matrix": [4, 2], "x": 2.25, "y": 4.25},
+                {"label":"X", "matrix": [4, 3], "x": 3.25, "y": 4.25},
+                {"label":"C", "matrix": [4, 4], "x": 4.25, "y": 4.25},
+                {"label":"V", "matrix": [4, 5], "x": 5.25, "y": 4.25},
+                {"label":"B", "matrix": [4, 6], "x": 6.25, "y": 4.25},
+                {"label":"N", "matrix": [4, 7], "x": 7.25, "y": 4.25},
+                {"label":"M", "matrix": [4, 8], "x": 8.25, "y": 4.25},
+                {"label":",<", "matrix": [4, 9], "x": 9.25, "y": 4.25},
+                {"label":".>", "matrix": [4, 10], "x": 10.25, "y": 4.25},
+                {"label":"/?", "matrix": [4, 11], "x": 11.25, "y": 4.25},
+                {"label":"Shift", "matrix": [4, 12], "x": 12.25, "y": 4.25, "w": 2.75},
+
+                {"label":"Up",  "matrix": [4, 15], "x": 16.25, "y": 4.25},
+
+                {"label":"LCtrl", "matrix": [5, 0], "x": 0, "y": 5.25, "w": 1.5},
+                {"label":"Lwin", "matrix": [5, 1], "x": 1.5, "y": 5.25},
+                {"label":"LAlt", "matrix": [5, 2], "x": 2.5, "y": 5.25, "w": 1.5},
+                {"label":"Space", "matrix": [5, 6], "x": 4, "y": 5.25, "w": 6.25},
+                {"label":"RAlt", "matrix": [5, 10], "x": 11, "y": 5.25, "w": 1.5},
+                {"label":"RWin", "matrix": [5, 11], "x": 12.5, "y": 5.25},
+                {"label":"RCtrl", "matrix": [5, 12], "x": 13.5, "y": 5.25, "w": 1.5},
+
+                {"label":"Left", "matrix": [5, 14], "x": 15.25, "y": 5.25},
+                {"label":"Down", "matrix": [5, 15], "x": 16.25, "y": 5.25},
+                {"label":"Right", "matrix": [5, 16], "x": 17.25, "y": 5.25}
+            ]
+        }
+    }
+}
diff --git a/keyboards/acheron/themis/87htsc/keymaps/default/keymap.c b/keyboards/acheron/themis/87htsc/keymaps/default/keymap.c
new file mode 100755
index 000000000000..7b29220ec8d4
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/keymaps/default/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2023 Gondolindrim
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   [0] = LAYOUT_tkl_ansi_tsangan(
+        KC_ESC , KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  , KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,          KC_PSCR, KC_SCRL, KC_PAUS , 
+        KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   , KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_MINS, KC_EQL , KC_BSPC, KC_INS , KC_HOME, KC_PGUP ,
+        KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL , KC_END , KC_PGDN ,
+        KC_CAPS, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
+	KC_LSFT,          KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC ,                            KC_RALT, KC_RGUI, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+	),
+   [1] = LAYOUT_tkl_ansi_tsangan(
+        QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_HUI, RGB_SAI, RGB_VAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS,          RGB_TOG, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, RGB_SPD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS,           KC_TRNS, KC_TRNS, KC_TRNS
+        )
+};
diff --git a/keyboards/acheron/themis/87htsc/keymaps/via/keymap.c b/keyboards/acheron/themis/87htsc/keymaps/via/keymap.c
new file mode 100755
index 000000000000..7b29220ec8d4
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/keymaps/via/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2023 Gondolindrim
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   [0] = LAYOUT_tkl_ansi_tsangan(
+        KC_ESC , KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  , KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,          KC_PSCR, KC_SCRL, KC_PAUS , 
+        KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   , KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_MINS, KC_EQL , KC_BSPC, KC_INS , KC_HOME, KC_PGUP ,
+        KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL , KC_END , KC_PGDN ,
+        KC_CAPS, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
+	KC_LSFT,          KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC ,                            KC_RALT, KC_RGUI, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+	),
+   [1] = LAYOUT_tkl_ansi_tsangan(
+        QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_HUI, RGB_SAI, RGB_VAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS,          RGB_TOG, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, RGB_SPD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS,           KC_TRNS, KC_TRNS, KC_TRNS
+        )
+};
diff --git a/keyboards/acheron/themis/87htsc/keymaps/via/rules.mk b/keyboards/acheron/themis/87htsc/keymaps/via/rules.mk
new file mode 100644
index 000000000000..1e5b99807cb7
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/acheron/themis/87htsc/mcuconf.h b/keyboards/acheron/themis/87htsc/mcuconf.h
new file mode 100644
index 000000000000..3d1d05c307c4
--- /dev/null
+++ b/keyboards/acheron/themis/87htsc/mcuconf.h
@@ -0,0 +1,25 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PWM_USE_ADVANCED
+#define STM32_PWM_USE_ADVANCED TRUE
+
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1 TRUE
diff --git a/keyboards/acheron/themis/87htsc/rules.mk b/keyboards/acheron/themis/87htsc/rules.mk
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/keyboards/acheron/themis/88htsc/88htsc.c b/keyboards/acheron/themis/88htsc/88htsc.c
new file mode 100644
index 000000000000..dada30ff873f
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/88htsc.c
@@ -0,0 +1,25 @@
+/* Copyright 2023 Gondolindrim <gondolindrim@acheronproject.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "quantum.h"
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    if(res) {
+        led_state.caps_lock ? rgblight_setrgb_at(0xAA,0xAA,0xAA,0) : rgblight_setrgb_at(0x00,0x00,0x00,0) ;
+    }
+    return res;
+}
diff --git a/keyboards/acheron/themis/88htsc/config.h b/keyboards/acheron/themis/88htsc/config.h
new file mode 100644
index 000000000000..8a1ff4858323
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/config.h
@@ -0,0 +1,33 @@
+/*
+Copyright 2023 Gondolindrim <gondolindrim@acheronproject.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#define LOCKING_SUPPORT_ENABLE
+#define LOCKING_RESYNC_ENABLE
+
+#define RGBLED_NUM 1
+
+#define WS2812_PWM_COMPLEMENTARY_OUTPUT
+#define WS2812_PWM_DRIVER PWMD1
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#define WS2812_DMA_CHANNEL 6
+
+#define WEAR_LEVELING_LOGICAL_SIZE 4096
+#define WEAR_LEVELING_BACKING_SIZE 8192
diff --git a/keyboards/acheron/themis/88htsc/halconf.h b/keyboards/acheron/themis/88htsc/halconf.h
new file mode 100644
index 000000000000..485d48ef3067
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/halconf.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define HAL_USE_PWM TRUE
+#define HAL_USE_PAL TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/acheron/themis/88htsc/info.json b/keyboards/acheron/themis/88htsc/info.json
new file mode 100644
index 000000000000..cfce0702eb40
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/info.json
@@ -0,0 +1,137 @@
+{
+    "keyboard_name": "Themis 88H-T-SC Rev. Alpha",
+    "usb": {
+        "pid": "0x5450",
+        "device_version": "0.0.1"
+    },
+    "matrix_pins": {
+        "cols": ["A8" ,"C9" ,"C8" ,"B14","B12","B10","B1" ,"B0" ,"A7" ,"A6" ,"A5" ,"A4" ,"C5" ,"C7" ,"B3" ,"A2" ,"C12","D2" ],
+        "rows": ["A15","A10","C6" ,"C4" ,"A3" ,"A1" ,"C11","C10","B4"]
+    },
+    "features": {
+        "bootmagic": true,
+        "lto":       true,
+        "mousekey":  true,
+        "extrakey":  true,
+        "console":   false,
+        "backlight": false,
+        "rgblight":  true,
+        "audio":     false,
+        "encoder":   false,
+        "nkro":      true
+    },
+    "diode_direction": "COL2ROW",
+    "ws2812": {
+        "pin": "B15"
+    },
+    "processor": "STM32F401",
+    "bootloader": "stm32-dfu",
+    "community_layouts": ["tkl_f13_ansi_tsangan"],
+    "layouts": {
+        "LAYOUT_tkl_f13_ansi_tsangan": {
+            "layout": [
+                {"label":"Escape", "matrix": [0, 0], "x": 0, "y": 0},
+
+                {"label":"F1", "matrix": [0, 1], "x": 1.25, "y": 0},
+                {"label":"F2", "matrix": [0, 2], "x": 2.25, "y": 0},
+                {"label":"F3", "matrix": [0, 3], "x": 3.25, "y": 0},
+                {"label":"F4", "matrix": [0, 4], "x": 4.25, "y": 0},
+
+                {"label":"F5", "matrix": [0, 5], "x": 5.5, "y": 0},
+                {"label":"F6", "matrix": [0, 6], "x": 6.5, "y": 0},
+                {"label":"F7", "matrix": [0, 7], "x": 7.5, "y": 0},
+                {"label":"F8", "matrix": [0, 8], "x": 8.5, "y": 0},
+
+                {"label":"F9", "matrix": [0, 9], "x": 9.75, "y": 0},
+                {"label":"F10", "matrix": [0, 10], "x": 10.75, "y": 0},
+                {"label":"F11", "matrix": [0, 11], "x": 11.75, "y": 0},
+                {"label":"F12", "matrix": [0, 12], "x": 12.75, "y": 0},
+
+                {"label":"F13", "matrix": [0, 13], "x": 14, "y": 0},
+
+                {"label":"Print Screen", "matrix": [6, 14], "x": 15.25, "y": 0},
+                {"label":"Scroll Lock", "matrix": [6, 17], "x": 16.25, "y": 0},
+                {"label":"Pause", "matrix": [6, 16], "x": 17.25, "y": 0},
+
+                {"label":"`~", "matrix": [1, 0], "x": 0, "y": 1.25},
+                {"label":"1!", "matrix": [1, 1], "x": 1, "y": 1.25},
+                {"label":"2@", "matrix": [1, 2], "x": 2, "y": 1.25},
+                {"label":"3#", "matrix": [1, 3], "x": 3, "y": 1.25},
+                {"label":"4$", "matrix": [1, 4], "x": 4, "y": 1.25},
+                {"label":"5%", "matrix": [1, 5], "x": 5, "y": 1.25},
+                {"label":"6^", "matrix": [1, 6], "x": 6, "y": 1.25},
+                {"label":"7&", "matrix": [1, 7], "x": 7, "y": 1.25},
+                {"label":"8*", "matrix": [1, 8], "x": 8, "y": 1.25},
+                {"label":"9(", "matrix": [1, 9], "x": 9, "y": 1.25},
+                {"label":"0)", "matrix": [1, 10], "x": 10, "y": 1.25},
+                {"label":"-_", "matrix": [1, 11], "x": 11, "y": 1.25},
+                {"label":"=+", "matrix": [1, 12], "x": 12, "y": 1.25},
+                {"label":"Backspace", "matrix": [1, 13], "x": 13, "y": 1.25, "w": 2},
+
+                {"label":"Insert", "matrix": [7, 14], "x": 15.25, "y": 1.25},
+                {"label":"Home", "matrix": [7, 17], "x": 16.25, "y": 1.25},
+                {"label":"Page Up","matrix": [7, 16], "x": 17.25, "y": 1.25},
+
+                {"label":"Tab", "matrix": [2, 0], "x": 0, "y": 2.25, "w": 1.5},
+                {"label":"Q", "matrix": [2, 1], "x": 1.5, "y": 2.25},
+                {"label":"W", "matrix": [2, 2], "x": 2.5, "y": 2.25},
+                {"label":"E", "matrix": [2, 3], "x": 3.5, "y": 2.25},
+                {"label":"R", "matrix": [2, 4], "x": 4.5, "y": 2.25},
+                {"label":"T", "matrix": [2, 5], "x": 5.5, "y": 2.25},
+                {"label":"Y", "matrix": [2, 6], "x": 6.5, "y": 2.25},
+                {"label":"U", "matrix": [2, 7], "x": 7.5, "y": 2.25},
+                {"label":"I", "matrix": [2, 8], "x": 8.5, "y": 2.25},
+                {"label":"O", "matrix": [2, 9], "x": 9.5, "y": 2.25},
+                {"label":"P", "matrix": [2, 10], "x": 10.5, "y": 2.25},
+                {"label":"[{", "matrix": [2, 11], "x": 11.5, "y": 2.25},
+                {"label":"]}", "matrix": [2, 12], "x": 12.5, "y": 2.25},
+                {"label":"\\|", "matrix": [2, 13], "x": 13.5, "y": 2.25, "w": 1.5},
+
+                {"label":"Delete", "matrix": [8, 14], "x": 15.25, "y": 2.25},
+                {"label":"End", "matrix": [8, 17], "x": 16.25, "y": 2.25},
+                {"label":"Page Down", "matrix": [8, 16], "x": 17.25, "y": 2.25},
+
+                {"label":"Caps Lock", "matrix": [3, 0], "x": 0, "y": 3.25, "w": 1.75},
+                {"label":"A", "matrix": [3, 1], "x": 1.75, "y": 3.25},
+                {"label":"S", "matrix": [3, 2], "x": 2.75, "y": 3.25},
+                {"label":"D", "matrix": [3, 3], "x": 3.75, "y": 3.25},
+                {"label":"F", "matrix": [3, 4], "x": 4.75, "y": 3.25},
+                {"label":"G", "matrix": [3, 5], "x": 5.75, "y": 3.25},
+                {"label":"H", "matrix": [3, 6], "x": 6.75, "y": 3.25},
+                {"label":"J", "matrix": [3, 7], "x": 7.75, "y": 3.25},
+                {"label":"K", "matrix": [3, 8], "x": 8.75, "y": 3.25},
+                {"label":"L", "matrix": [3, 9], "x": 9.75, "y": 3.25},
+                {"label":";:", "matrix": [3, 10], "x": 10.75, "y": 3.25},
+                {"label":"\'\"", "matrix": [3, 11], "x": 11.75, "y": 3.25},
+                {"label":"Enter", "matrix": [3, 12], "x": 12.75, "y": 3.25, "w": 2.25},
+
+                {"label":"Shift", "matrix": [4, 0], "x": 0, "y": 4.25, "w": 2.25},
+                {"label":"Z", "matrix": [4, 2], "x": 2.25, "y": 4.25},
+                {"label":"X", "matrix": [4, 3], "x": 3.25, "y": 4.25},
+                {"label":"C", "matrix": [4, 4], "x": 4.25, "y": 4.25},
+                {"label":"V", "matrix": [4, 5], "x": 5.25, "y": 4.25},
+                {"label":"B", "matrix": [4, 6], "x": 6.25, "y": 4.25},
+                {"label":"N", "matrix": [4, 7], "x": 7.25, "y": 4.25},
+                {"label":"M", "matrix": [4, 8], "x": 8.25, "y": 4.25},
+                {"label":",<", "matrix": [4, 9], "x": 9.25, "y": 4.25},
+                {"label":".>", "matrix": [4, 10], "x": 10.25, "y": 4.25},
+                {"label":"/?", "matrix": [4, 11], "x": 11.25, "y": 4.25},
+                {"label":"Shift", "matrix": [4, 12], "x": 12.25, "y": 4.25, "w": 2.75},
+
+                {"label":"Up",  "matrix": [4, 15], "x": 16.25, "y": 4.25},
+
+                {"label":"LCtrl", "matrix": [5, 0], "x": 0, "y": 5.25, "w": 1.5},
+                {"label":"Lwin", "matrix": [5, 1], "x": 1.5, "y": 5.25},
+                {"label":"LAlt", "matrix": [5, 2], "x": 2.5, "y": 5.25, "w": 1.5},
+                {"label":"Space", "matrix": [5, 6], "x": 4, "y": 5.25, "w": 6.25},
+                {"label":"RAlt", "matrix": [5, 10], "x": 11, "y": 5.25, "w": 1.5},
+                {"label":"RWin", "matrix": [5, 11], "x": 12.5, "y": 5.25},
+                {"label":"RCtrl", "matrix": [5, 12], "x": 13.5, "y": 5.25, "w": 1.5},
+
+                {"label":"Left", "matrix": [5, 14], "x": 15.25, "y": 5.25},
+                {"label":"Down", "matrix": [5, 15], "x": 16.25, "y": 5.25},
+                {"label":"Right", "matrix": [5, 16], "x": 17.25, "y": 5.25}
+            ]
+        }
+    }
+}
diff --git a/keyboards/acheron/themis/88htsc/keymaps/default/keymap.c b/keyboards/acheron/themis/88htsc/keymaps/default/keymap.c
new file mode 100755
index 000000000000..725b294b0d65
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/keymaps/default/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2023 Gondolindrim
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   [0] = LAYOUT_tkl_f13_ansi_tsangan(
+        KC_ESC , KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  , KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 , KC_F13,  KC_PSCR, KC_SCRL, KC_PAUS , 
+        KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   , KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_MINS, KC_EQL , KC_BSPC, KC_INS , KC_HOME, KC_PGUP ,
+        KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL , KC_END , KC_PGDN ,
+        KC_CAPS, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
+	KC_LSFT,          KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC ,                            KC_RALT, KC_RGUI, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+	),
+   [1] = LAYOUT_tkl_f13_ansi_tsangan(
+        QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_HUI, RGB_SAI, RGB_VAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS,          RGB_TOG, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, RGB_SPD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS,           KC_TRNS, KC_TRNS, KC_TRNS
+        )
+};
diff --git a/keyboards/acheron/themis/88htsc/keymaps/via/keymap.c b/keyboards/acheron/themis/88htsc/keymaps/via/keymap.c
new file mode 100755
index 000000000000..725b294b0d65
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/keymaps/via/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2023 Gondolindrim
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+   [0] = LAYOUT_tkl_f13_ansi_tsangan(
+        KC_ESC , KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  , KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 , KC_F13,  KC_PSCR, KC_SCRL, KC_PAUS , 
+        KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   , KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_MINS, KC_EQL , KC_BSPC, KC_INS , KC_HOME, KC_PGUP ,
+        KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL , KC_END , KC_PGDN ,
+        KC_CAPS, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
+	KC_LSFT,          KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
+        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC ,                            KC_RALT, KC_RGUI, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+	),
+   [1] = LAYOUT_tkl_f13_ansi_tsangan(
+        QK_BOOT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_HUI, RGB_SAI, RGB_VAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS,          RGB_TOG, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, RGB_SPD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS,           KC_TRNS, KC_TRNS, KC_TRNS
+        )
+};
diff --git a/keyboards/acheron/themis/88htsc/keymaps/via/rules.mk b/keyboards/acheron/themis/88htsc/keymaps/via/rules.mk
new file mode 100644
index 000000000000..1e5b99807cb7
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/acheron/themis/88htsc/mcuconf.h b/keyboards/acheron/themis/88htsc/mcuconf.h
new file mode 100644
index 000000000000..3d1d05c307c4
--- /dev/null
+++ b/keyboards/acheron/themis/88htsc/mcuconf.h
@@ -0,0 +1,25 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PWM_USE_ADVANCED
+#define STM32_PWM_USE_ADVANCED TRUE
+
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1 TRUE
diff --git a/keyboards/acheron/themis/88htsc/rules.mk b/keyboards/acheron/themis/88htsc/rules.mk
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/keyboards/acheron/themis/info.json b/keyboards/acheron/themis/info.json
new file mode 100644
index 000000000000..4f9d3b61e615
--- /dev/null
+++ b/keyboards/acheron/themis/info.json
@@ -0,0 +1,8 @@
+{
+    "manufacturer": "AcheronProject",
+    "url": "",
+    "maintainer": "Gondolindrim",
+    "usb": {
+        "vid": "0xAC11"
+    }
+}
diff --git a/keyboards/acheron/themis/readme.md b/keyboards/acheron/themis/readme.md
new file mode 100644
index 000000000000..8c0c7e63e54f
--- /dev/null
+++ b/keyboards/acheron/themis/readme.md
@@ -0,0 +1,23 @@
+# Acheron Themis QMK firmware
+
+![themis](https://i.imgur.com/kwemOsJh.png)
+
+The Themis is Acheron Project's open-source, freely available tenkeyless (TKL) keyboard Printed Circuit Boards (PCB) which features:
+
+- No LED lighting
+- Solderless ("hotswap") MX switches support
+- Fixed layout for each variant
+
+* Keyboard Maintainer: [Gondolindrim](https://github.com/Gondolindrim)
+* Hardware Supported: open-source PCB using the [Joker template](https://acheronproject.com/joker_mcus/joker/). First units were manufactured using STM32F4x1 microcontroller;
+* Hardware Availability: open-source PCBs
+
+In order to flash this PCB, first build the default layout (after setting up your build environment):
+
+    make acheron/themis/<revision>:default
+
+After building or downloading the firmware, put the PCB into DFU mode by holding the reset button for at least five seconds and upload the firmware onto the microcontroller through a utility like `dfu-util` or QMK Toolbox. Alternatively, you can build and flash using:
+
+    make acheron/themis/<revision>:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).