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Renaming of project + improved documentation
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@biologist79
biologist79 committed Jan 29, 2021
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4 changes: 2 additions & 2 deletions PCBs/Headphone with PCM5102a and TDA1308/README.md
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# Headphone-PCB
This is a pcb, that was kindly provided by a user of my Tonuino-fork. It makes use of a DAC named 'PCM5102A' with a TDA1308 as amp. PCM5102A supports I2S, so it can connected in parallel to MAX98357a to the I2S-pins BCLK, LRC and DIN. Of course, it needs 3.3V and GND, too. Please note that SMD-technique is used. <br />
This is a pcb, that was kindly provided by a user of my ESPuino. It makes use of a DAC named 'PCM5102A' with a TDA1308 as amp. PCM5102A supports I2S, so it can connected in parallel to MAX98357a to the I2S-pins BCLK, LRC and DIN. Of course, it needs 3.3V and GND, too. Please note that SMD-technique is used. <br />
The 6th pin of connector J1 is used to indicate whether there's a plug or not. That means if there is a plug, this pin is pulled to GND and therefore can be used to connect to MAX98357.SD. Doing so will mute MAX's amp and vice versa. Of course you need a special [headphone jack](https://www.conrad.de/de/p/cliff-fcr1295-klinken-steckverbinder-3-5-mm-buchse-einbau-horizontal-polzahl-3-stereo-schwarz-1-st-705830.html) to use this feature. Additionaly this 6th pin can be connected to the ESP32 in order to make use of the feature `HEADPHONE_ADJUST_ENABLE`. Doing so can optionally limit the headphone's maximum volume (configureable via GUI). <br />

## Disclaimer
PCB-circuit is provided 'as is' without warranty. As previously stated it was kindly provided by a user and I only can give limited support to it. However: it runs fine without any problems in my Tonuinos.
PCB-circuit is provided 'as is' without warranty. As previously stated it was kindly provided by a user and I only can give limited support to it. However: it runs fine without any problems in my ESPuinos.
12 changes: 6 additions & 6 deletions PCBs/Wemos Lolin D32/README.md
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# Tonuino-PCB based on Wemos' Lolin D32
# ESPuino-PCB based on Wemos' Lolin D32

## Features
* Fits Wemos Lolin D32 (not Lolin32, Lolin D32 pro or Lolin 32 lite!)
Expand All @@ -7,12 +7,12 @@
* 2.54mm-connectors for MAX98357a and µSD-card-reader. In contrast to my pictures: better solder them directly onto the PCB without having a female-connector (as socket) in between. In turned out that especially plugging MAX98357a into a female connector can lead to connectivity-issues!
* Mosfet-circuit that switches off MAX98357a, Neopixel, headphone-pcb, RFID-reader and µSD-card-reader automatically when deepsleep is active
* All peripherals are solely driven at 3.3V, as 5V isn't available in battery-mode. Keep this especially in mind when choosing µSD-reader. If in doubts use one without voltage-regulator (link below).
* If [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is used, MAX98357a is automatically muted when there's a headphone plugged in and vice versa.
* If `HEADPHONE_ADJUST_ENABLE` is set and a headphone is plugged in, an alternative maximum volume is activated. I added this feature because [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) makes use of an amp that (probably) "allows" children to damage ears. This maximum volume can be set and re-adjusted via webgui.
* If [headphone-pcb](https://github.com/biologist79/ESPuino/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is used, MAX98357a is automatically muted when there's a headphone plugged in and vice versa.
* If `HEADPHONE_ADJUST_ENABLE` is set and a headphone is plugged in, an alternative maximum volume is activated. I added this feature because [headphone-pcb](https://github.com/biologist79/ESPuino/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) makes use of an amp that (probably) "allows" children to damage ears. This maximum volume can be set and re-adjusted via webgui.
* Reset-button

## Prerequisites
* If no [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is connected, make sure `HEADPHONE_ADJUST_ENABLE` is disabled.
* If no [headphone-pcb](https://github.com/biologist79/ESPuino/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is connected, make sure `HEADPHONE_ADJUST_ENABLE` is disabled.
* Make sure to edit `settings.h` (HAL=3) and `settings-lolin_d32.h` according your needs.
* Disable `SD_MMC_1BIT_MODE` and `SINGLE_SPI_ENABLE` as these are not supported by this PCB.
* Enable `RFID_READER_TYPE_MFRC522_SPI` as other RFID-reader-types are not supported by this PCB.
Expand Down Expand Up @@ -55,7 +55,7 @@ Uses two SPI-instances. The first one for the RFID-reader and the second for SD-
| GND | Neopixel | G | |
| 12 | Neopixel | DI | |
| 17 | N-channel Mosfet | Gate | |
| 33 | Voltage-divider / BAT | | Optional: voltage-divider to monitor battery-voltage |
| 35 | Voltage-divider / BAT | | |
| 22 | Headphone jack | | Optional: if pulled to ground, headphone-volume is set |

## Things to mention
Expand All @@ -81,7 +81,7 @@ The heart of my project is an ESP32 on a [Wemos Lolin D32 development-board](htt
* [LiPo-battery (2500 mAh) with connector JST PH 2.0mm](https://www.eremit.de/p/eremit-3-7v-2500mah-lipo-104050-jst-ph-2-0mm)

## Parts
* 1x IRF530NPbF (N-channel MOSFET)
* 1x IRL3103 (N-channel MOSFET) (instead of IRF530NPbF as IRL3103 has lower Vgs)
* 1x NDP6020P (P-channel MOSFET)
* 1x 1k resistor
* 1x 10k resistor
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12 changes: 6 additions & 6 deletions PCBs/Wemos Lolin32/README.md
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# Tonuino-PCB based on Wemos' Lolin32
# ESPuino-PCB based on Wemos' Lolin32

## Introduction
After I've been asked many times to provide a PCB, I finally did so :-) It makes use of Wemos' Lolin32 which is the predecessor of Lolin D32. D32's advantage over Lolin32 is especially, that a voltage-divider for measuring battery's voltage is already integrated (fixed-wired to GPIO 35). However, as I wasn't aware of that when buying Lolin32 and because of now, that multiple Lolin32 are here on my desk, my reasonable intention was to use them. So things would have been a bit easier with D32 but in the end it works the same way with Lolin32. As per rev2 of the PCB, I added a 10 uF-capacitor to smoothen the battery-measurement. Ii's optional but be advised values measured are a bit more volatile without capacitor-stabilization.
Expand All @@ -10,12 +10,12 @@ After I've been asked many times to provide a PCB, I finally did so :-) It makes
* 2.54mm-connectors for MAX98357a and µSD-card-reader. In contrast to my pictures: better solder them directly onto the PCB without having a female-connector (as socket) in between. In turned out that especially plugging MAX98357a into a female connector can lead to connectivity-issues!
* Mosfet-circuit that switches off MAX98357a, Neopixel, headphone-pcb, RFID-reader and µSD-card-reader automatically when deepsleep is active.
* All peripherals are solely driven at 3.3V! Keep this especially in mind when choosing µSD-reader. If in doubts use one without voltage-regulator (link below).
* If [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is used, MAX98357a is automatically muted when there's a headphone plugged in and vice versa.
* If `HEADPHONE_ADJUST_ENABLE` is enabled and a headphone is plugged in, an alternative maximum volume is activated. I added this feature because [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) makes use of an amp that (probably) "allows" children to damage ears. This maximum volume can be set and re-adjusted via webgui.
* rev2: Reset-pinheader added. Can be used to connect e.g. a [micro switch](https://www.ebay.de/itm/10x-Mini-Taster-Drucktaster-klein-Mikroschalter-6x6x5mm-Arduino-Raspberry-Pi/333273061003) to it, so you can reset Tonuino even in battery-mode from the outside of the enclosure. Micro switch can be placed somewhat hidden at the enclosure.
* If [headphone-pcb](https://github.com/biologist79/ESPuino/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is used, MAX98357a is automatically muted when there's a headphone plugged in and vice versa.
* If `HEADPHONE_ADJUST_ENABLE` is enabled and a headphone is plugged in, an alternative maximum volume is activated. I added this feature because [headphone-pcb](https://github.com/biologist79/ESPuino/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) makes use of an amp that (probably) "allows" children to damage ears. This maximum volume can be set and re-adjusted via webgui.
* rev2: Reset-pinheader added. Can be used to connect e.g. a [micro switch](https://www.ebay.de/itm/10x-Mini-Taster-Drucktaster-klein-Mikroschalter-6x6x5mm-Arduino-Raspberry-Pi/333273061003) to it, so you can reset ESPuino even in battery-mode from the outside of the enclosure. Micro switch can be placed somewhat hidden at the enclosure.

## Prerequisites
* If no [headphone-pcb](https://github.com/biologist79/Tonuino-ESP32-I2S/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is connected, make sure `HEADPHONE_ADJUST_ENABLE` is disabled.
* If no [headphone-pcb](https://github.com/biologist79/ESPuino/tree/master/PCBs/Headphone%20with%20PCM5102a%20and%20TDA1308) is connected, make sure `HEADPHONE_ADJUST_ENABLE` is disabled.
* I used 130/130 kOhms-resistors as voltage-divider for `MEASURE_BATTERY_VOLTAGE`. However, make sure to use a multimeter to determine their exact values in order to achieve a better battery-measurement (was 129 kOhms in my case). They can be configured in `settings-lolin32.h` as `rdiv1` and `rdiv2`. Initially, I used 390/130k because I thought it's a good idea to have a greater signal to measure. But [as it turned out](https://randomnerdtutorials.com/esp32-adc-analog-read-arduino-ide/) analogRead() with a greater voltage than 3 V is a bad idea because of the flattened curve. So better use a voltage-divider with 50%/50% potential drop.
* In my tests, measured values were around 0.1 V too low. If you encounter such a difference you can adjust the `offsetVoltage` accordingly. But make sure to measure in battery-mode (disconnect USB!).
* `referenceVoltage` is the voltage between 3.3 V and GND on the develboard in battery-mode
Expand Down Expand Up @@ -90,7 +90,7 @@ The heart of my project is an ESP32 on a [Wemos Lolin32 development-board](https
* [LiPo-battery (2500 mAh) with connector JST PH 2.0mm](https://www.eremit.de/p/eremit-3-7v-2500mah-lipo-104050-jst-ph-2-0mm)

## Parts
* 1x IRF530NPbF (N-channel MOSFET)
* 1x IRL3103 (N-channel MOSFET) (instead of IRF530NPbF as IRL3103 has lower Vgs)
* 1x NDP6020P (P-channel MOSFET)
* 1x 1k resistor
* 1x 10k resistor
Expand Down
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