|GPIO22||I2C SCL 1|
|GPIO23||I2C SDA 1|
|GPIO25||ADC Input 2|
|GPIO26||ADC Input 1|
|GPIO34||ADC Input 3|
|GPIO39||ADC Input 4|
The provided template sets up the I2C pins (
SDA) as well as 7 ADCs for the pins labeled A0-A5 on the board and the
GPIO13 is set as an LED for the board’s red indicator LED but can also be used as a GPIO or ADC input if needed.
The board has a resistive divider connected to
VBAT that goes into pin
VBAT is available on a 2-pin JST header as well as the
BAT pin next to it and is intended to be used with a 4.2V/3.7V LiPo or LiIon battery.
This isn’t useful for Tasmota but for power saving purposes the built-in 3.3V regulator can be disabled by pulling the
EN pin to ground. This will power down the ESP32 module and everything else on the board aside from the USB to UART converter.