diff --git a/keyboards/viktus/osav2_numpad_topre/ec.c b/keyboards/viktus/osav2_numpad_topre/ec.c
new file mode 100644
index 000000000000..e4f59c3b6bf8
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/ec.c
@@ -0,0 +1,181 @@
+/* Copyright 2023 Viktus Design LLC
+ *
+ * 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 .
+ */
+
+#include "quantum.h"
+#include "ec.h"
+#include "analog.h"
+//#include "debug.h" // needed for debugging
+
+// sensing channel definitions
+#define A0 0
+#define A1 1
+#define A2 2
+#define A3 3
+#define A4 4
+#define A5 5
+#define A6 6
+#define A7 7
+
+// analog connection settings
+#define DISCHARGE_PIN B5
+#define ANALOG_PORT B6
+
+#ifndef MUX_SEL_PIN
+# define MUX_SEL_PINS \
+ { D6, D7, B4 }
+#endif
+
+// pin connections
+const uint8_t row_channels[] = MATRIX_ROW_PINS;
+const uint8_t col_pins[] = MATRIX_COL_PINS;
+const uint8_t mux_sel_pins[] = MUX_SEL_PINS;
+
+_Static_assert(sizeof(mux_sel_pins) == 3, "invalid MUX_SEL_PINS");
+
+static ec_config_t config;
+static uint16_t ec_sw_value[MATRIX_COLS][MATRIX_ROWS];
+
+static inline void discharge_capacitor(void) { setPinOutput(DISCHARGE_PIN); }
+static inline void charge_capacitor(uint8_t col) {
+ setPinInput(DISCHARGE_PIN);
+ writePinHigh(col_pins[col]);
+}
+
+static inline void clear_all_col_pins(void) {
+ for (int col = 0; col < sizeof(col_pins); col++) {
+ writePinLow(col_pins[col]);
+ }
+}
+
+void init_mux_sel(void) {
+ for (int idx = 0; idx < sizeof(mux_sel_pins); idx++) {
+ setPinOutput(mux_sel_pins[idx]);
+ }
+}
+
+void select_mux(uint8_t row) {
+ uint8_t ch = row_channels[row];
+ writePin(mux_sel_pins[0], ch & 1);
+ writePin(mux_sel_pins[1], ch & 2);
+ writePin(mux_sel_pins[2], ch & 4);
+}
+
+void init_col(void) {
+ for (int idx = 0; idx < sizeof(col_pins); idx++) {
+ setPinOutput(col_pins[idx]);
+ writePinLow(col_pins[idx]);
+ }
+}
+
+void ec_init(ec_config_t const* const ec_config) {
+ // save config
+ config = *ec_config;
+
+ // initialize discharge pin as discharge mode
+ writePinLow(DISCHARGE_PIN);
+ setPinOutput(DISCHARGE_PIN);
+
+ // set analog reference
+ analogReference(ADC_REF_POWER);
+
+ // initialize drive lines
+ init_col();
+
+ // initialize multiplexer select pin
+ init_mux_sel();
+
+ // set discharge pin to charge mode
+ setPinInput(DISCHARGE_PIN);
+}
+
+uint16_t ec_readkey_raw(uint8_t col, uint8_t row) {
+ uint16_t sw_value = 0;
+
+ discharge_capacitor();
+
+ select_mux(row);
+
+ clear_all_col_pins();
+
+ cli();
+
+ charge_capacitor(col);
+
+ sw_value = analogReadPin(ANALOG_PORT);
+
+ sei();
+
+ return sw_value;
+}
+
+bool ec_update_key(matrix_row_t* current_row, matrix_row_t col, uint16_t sw_value, uint16_t reset_pt, uint16_t actuation_pt) {
+ bool current_state = (*current_row >> col) & 1;
+
+ // press to release
+ if (current_state && sw_value < reset_pt) {
+ *current_row &= ~(MATRIX_ROW_SHIFTER << col);
+ return true;
+ }
+
+ // rest to press
+ if ((!current_state) && sw_value > actuation_pt) {
+ *current_row |= (MATRIX_ROW_SHIFTER << col);
+ return true;
+ }
+
+ return false;
+}
+
+bool ec_matrix_scan(matrix_row_t current_matrix[]) {
+ bool updated = false;
+
+ for (int row = 0; row < sizeof(row_channels); row++) {
+ for (int col = 0; col < sizeof(col_pins); col++) {
+ uint16_t reset_pt = config.reset_pt;
+ uint16_t actuation_pt = config.actuation_pt;
+
+ //Modifying threshold values for overlapping pads
+ switch(row) {
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ switch(col) {
+ case 3: // lower threshold for plus and enter: (37 rest, 61 btm)
+ reset_pt = 45;
+ actuation_pt = 50;
+ break;
+ }
+ break;
+ }
+
+ ec_sw_value[col][row] = ec_readkey_raw(col, row);
+ updated |= ec_update_key(¤t_matrix[row], col, ec_sw_value[col][row], reset_pt, actuation_pt);
+ }
+ }
+
+ return updated;
+}
+
+// console debugging for pad values
+/*void ec_dprint_matrix(void) {
+ for (int row = 0; row < sizeof(row_channels); row++) {
+ for (int col = 0; col < sizeof(col_pins); col++) {
+ dprintf("%5d", ec_sw_value[col][row]);
+ }
+ dprintf("\n");
+ }
+}*/
diff --git a/keyboards/viktus/osav2_numpad_topre/ec.h b/keyboards/viktus/osav2_numpad_topre/ec.h
new file mode 100644
index 000000000000..33bdb2d5effb
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/ec.h
@@ -0,0 +1,31 @@
+/* Copyright 2023 Viktus Design LLC
+ *
+ * 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 .
+ */
+
+#include
+#include
+
+#include "matrix.h"
+
+typedef struct {
+ uint16_t reset_pt;
+ uint16_t actuation_pt;
+} ec_config_t;
+
+void ec_init(ec_config_t const* const ec_config);
+bool ec_matrix_scan(matrix_row_t current_matrix[]);
+//void ec_dprint_matrix(void); // needed for debugging
+uint16_t ec_readkey_raw(uint8_t col, uint8_t row);
+bool ec_update_key(matrix_row_t* current_row, uint8_t col, uint16_t sw_value, uint16_t reset_pt, uint16_t actuation_pt);
diff --git a/keyboards/viktus/osav2_numpad_topre/info.json b/keyboards/viktus/osav2_numpad_topre/info.json
new file mode 100644
index 000000000000..55ca939e3f43
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/info.json
@@ -0,0 +1,100 @@
+{
+ "manufacturer": "Viktus Design LLC",
+ "keyboard_name": "OSAv2 Numpad - Topre",
+ "maintainer": "BlindAssassin111",
+ "url": "https://viktus.design",
+ "usb": {
+ "device_version": "1.1.0",
+ "vid": "0x5644",
+ "pid": "0x4E54"
+ },
+ "bootloader": "atmel-dfu",
+ "processor": "atmega32u4",
+ "features": {
+ "bootmagic": true,
+ "command": false,
+ "console": false,
+ "extrakey": true,
+ "mousekey": true,
+ "nkro": true
+ },
+ "build": {
+ "lto": true
+ },
+ "diode_direction": "COL2ROW",
+ "matrix_pins": {
+ "cols": ["F5", "F6", "D3", "D2"],
+ "rows": ["A1", "A0", "A3", "A2", "A4"]
+ },
+ "layouts": {
+ "LAYOUT_ortho_5x4": {
+ "layout": [
+ { "label": "K00", "matrix": [0, 0], "x": 0, "y": 0 },
+ { "label": "K01", "matrix": [0, 1], "x": 1, "y": 0 },
+ { "label": "K02", "matrix": [0, 2], "x": 2, "y": 0 },
+ { "label": "K03", "matrix": [0, 3], "x": 3, "y": 0 },
+ { "label": "K10", "matrix": [1, 0], "x": 0, "y": 1 },
+ { "label": "K11", "matrix": [1, 1], "x": 1, "y": 1 },
+ { "label": "K12", "matrix": [1, 2], "x": 2, "y": 1 },
+ { "label": "K13", "matrix": [1, 3], "x": 3, "y": 1 },
+ { "label": "K20", "matrix": [2, 0], "x": 0, "y": 2 },
+ { "label": "K21", "matrix": [2, 1], "x": 1, "y": 2 },
+ { "label": "K22", "matrix": [2, 2], "x": 2, "y": 2 },
+ { "label": "K23", "matrix": [2, 3], "x": 3, "y": 2 },
+ { "label": "K30", "matrix": [3, 0], "x": 0, "y": 3 },
+ { "label": "K31", "matrix": [3, 1], "x": 1, "y": 3 },
+ { "label": "K32", "matrix": [3, 2], "x": 2, "y": 3 },
+ { "label": "K33", "matrix": [3, 3], "x": 3, "y": 3 },
+ { "label": "K40", "matrix": [4, 0], "x": 0, "y": 4 },
+ { "label": "K41", "matrix": [4, 1], "x": 1, "y": 4 },
+ { "label": "K42", "matrix": [4, 2], "x": 2, "y": 4 },
+ { "label": "K43", "matrix": [4, 3], "x": 3, "y": 4 }
+ ]
+ },
+ "LAYOUT_split_plus_2u_enter": {
+ "layout": [
+ { "label": "K00", "matrix": [0, 0], "x": 0, "y": 0 },
+ { "label": "K01", "matrix": [0, 1], "x": 1, "y": 0 },
+ { "label": "K02", "matrix": [0, 2], "x": 2, "y": 0 },
+ { "label": "K03", "matrix": [0, 3], "x": 3, "y": 0 },
+ { "label": "K10", "matrix": [1, 0], "x": 0, "y": 1 },
+ { "label": "K11", "matrix": [1, 1], "x": 1, "y": 1 },
+ { "label": "K12", "matrix": [1, 2], "x": 2, "y": 1 },
+ { "label": "K13", "matrix": [1, 3], "x": 3, "y": 1 },
+ { "label": "K20", "matrix": [2, 0], "x": 0, "y": 2 },
+ { "label": "K21", "matrix": [2, 1], "x": 1, "y": 2 },
+ { "label": "K22", "matrix": [2, 2], "x": 2, "y": 2 },
+ { "label": "K23", "matrix": [2, 3], "x": 3, "y": 2 },
+ { "label": "K30", "matrix": [3, 0], "x": 0, "y": 3 },
+ { "label": "K31", "matrix": [3, 1], "x": 1, "y": 3 },
+ { "label": "K32", "matrix": [3, 2], "x": 2, "y": 3 },
+ { "label": "K33", "matrix": [3, 3], "h": 2, "x": 3, "y": 3 },
+ { "label": "K40", "matrix": [4, 0], "x": 0, "y": 4 },
+ { "label": "K41", "matrix": [4, 1], "x": 1, "y": 4 },
+ { "label": "K42", "matrix": [4, 2], "x": 2, "y": 4 }
+ ]
+ },
+ "LAYOUT_2u_plus_2u_enter": {
+ "layout": [
+ { "label": "K00", "matrix": [0, 0], "x": 0, "y": 0 },
+ { "label": "K01", "matrix": [0, 1], "x": 1, "y": 0 },
+ { "label": "K02", "matrix": [0, 2], "x": 2, "y": 0 },
+ { "label": "K03", "matrix": [0, 3], "x": 3, "y": 0 },
+ { "label": "K10", "matrix": [1, 0], "x": 0, "y": 1 },
+ { "label": "K11", "matrix": [1, 1], "x": 1, "y": 1 },
+ { "label": "K12", "matrix": [1, 2], "x": 2, "y": 1 },
+ { "label": "K20", "matrix": [2, 0], "x": 0, "y": 2 },
+ { "label": "K21", "matrix": [2, 1], "x": 1, "y": 2 },
+ { "label": "K22", "matrix": [2, 2], "x": 2, "y": 2 },
+ { "label": "K23", "matrix": [2, 3], "h": 2, "x": 3, "y": 1 },
+ { "label": "K30", "matrix": [3, 0], "x": 0, "y": 3 },
+ { "label": "K31", "matrix": [3, 1], "x": 1, "y": 3 },
+ { "label": "K32", "matrix": [3, 2], "x": 2, "y": 3 },
+ { "label": "K33", "matrix": [3, 3], "h": 2, "x": 3, "y": 3 },
+ { "label": "K40", "matrix": [4, 0], "x": 0, "y": 4 },
+ { "label": "K41", "matrix": [4, 1], "x": 1, "y": 4 },
+ { "label": "K42", "matrix": [4, 2], "x": 2, "y": 4 }
+ ]
+ }
+ }
+}
diff --git a/keyboards/viktus/osav2_numpad_topre/keymaps/default/keymap.c b/keyboards/viktus/osav2_numpad_topre/keymaps/default/keymap.c
new file mode 100644
index 000000000000..7545c946c3f0
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/keymaps/default/keymap.c
@@ -0,0 +1,27 @@
+/* Copyright 2023 Viktus Design LLC
+ *
+ * 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 .
+ */
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [0] = LAYOUT_ortho_5x4(
+ KC_NUM, KC_PSLS, KC_PAST, KC_PMNS,
+ KC_P7, KC_P8, KC_P9, KC_PEQL,
+ KC_P4, KC_P5, KC_P6, KC_PPLS,
+ KC_P1, KC_P2, KC_P3, KC_PENT,
+ KC_P0, KC_P0, KC_PDOT, KC_DEL
+ )
+};
diff --git a/keyboards/viktus/osav2_numpad_topre/keymaps/via/keymap.c b/keyboards/viktus/osav2_numpad_topre/keymaps/via/keymap.c
new file mode 100644
index 000000000000..7545c946c3f0
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/keymaps/via/keymap.c
@@ -0,0 +1,27 @@
+/* Copyright 2023 Viktus Design LLC
+ *
+ * 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 .
+ */
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [0] = LAYOUT_ortho_5x4(
+ KC_NUM, KC_PSLS, KC_PAST, KC_PMNS,
+ KC_P7, KC_P8, KC_P9, KC_PEQL,
+ KC_P4, KC_P5, KC_P6, KC_PPLS,
+ KC_P1, KC_P2, KC_P3, KC_PENT,
+ KC_P0, KC_P0, KC_PDOT, KC_DEL
+ )
+};
diff --git a/keyboards/viktus/osav2_numpad_topre/keymaps/via/rules.mk b/keyboards/viktus/osav2_numpad_topre/keymaps/via/rules.mk
new file mode 100644
index 000000000000..1e5b99807cb7
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/viktus/osav2_numpad_topre/osav2_numpad_topre.c b/keyboards/viktus/osav2_numpad_topre/osav2_numpad_topre.c
new file mode 100644
index 000000000000..2337fc55f396
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/osav2_numpad_topre.c
@@ -0,0 +1,49 @@
+/* Copyright 2023 Viktus Design LLC
+ *
+ * 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 .
+ */
+
+#include "quantum.h"
+#include "ec.h"
+#include "matrix.h"
+//#include "debug.h" // needed for debugging
+
+#define RESET_PT 55
+#define ACTUATION_PT 65
+
+// console debugging for pad values
+void keyboard_post_init_kb() {
+ debug_enable = true;
+ debug_matrix = true;
+}
+
+void matrix_init_custom(void) {
+ ec_config_t ec_config = {.reset_pt = RESET_PT, .actuation_pt = ACTUATION_PT};
+
+ ec_init(&ec_config);
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+ bool updated = ec_matrix_scan(current_matrix);
+
+ // console debugging for pad values
+ /*static int cnt = 0;
+ if (cnt++ == 1000) {
+ cnt = 0;
+ ec_dprint_matrix();
+ dprintf("\n");
+ }*/
+
+ return updated;
+}
diff --git a/keyboards/viktus/osav2_numpad_topre/readme.md b/keyboards/viktus/osav2_numpad_topre/readme.md
new file mode 100644
index 000000000000..990bfe04fe7a
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/readme.md
@@ -0,0 +1,27 @@
+# OSAv2 Numpad - Topre
+
+![osav2_numpad_topre](https://i.imgur.com/G6yNtJMh.png)
+
+An OSAv2 Numpad in topre flavor.
+
+- Keyboard Maintainer: BlindAssassin111
+- Hardware Supported: OSAv2 Numpad Topre PCB
+- Hardware Availability: Viktus Design LLC
+
+Make example for this keyboard (after setting up your build environment):
+
+ make viktus/osav2_numpad_topre:default
+
+Flashing example for this keyboard:
+
+ make viktus/osav2_numpad_topre: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).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB - some may have pads you must short instead
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available
diff --git a/keyboards/viktus/osav2_numpad_topre/rules.mk b/keyboards/viktus/osav2_numpad_topre/rules.mk
new file mode 100644
index 000000000000..037e26c530c7
--- /dev/null
+++ b/keyboards/viktus/osav2_numpad_topre/rules.mk
@@ -0,0 +1,3 @@
+CUSTOM_MATRIX = lite
+QUANTUM_LIB_SRC += analog.c
+SRC += ec.c