Logo
Adafruit ESP32 Feather Development Board (HUZZAH32)
Adafruit ESP32 Feather

Available from:
Amazon.com
Amazon.com
Digikey.com
Mou.sr


Manufacturer:
Adafruit.com

Install method:
USB to Serial

GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 ???
GPIO05 None
GPIO09 User
GPIO10 User
GPIO12 User
GPIO13 Led 1
GPIO14 User
GPIO15 User
GPIO16 User
GPIO17 User
GPIO18 None
GPIO19 User
GPIO20 None
GPIO21 None
GPIO22 I2C SCL 1
GPIO23 I2C SDA 1
GPIO24 None
GPIO25 ???
GPIO26 ADC Input
GPIO27 User
GPIO6 None
GPIO7 None
GPIO8 None
GPIO11 None
GPIO32 User
GPIO33 User
GPIO34 ???
GPIO35 ???
GPIO36 ???
GPIO37 None
GPIO38 None
GPIO39 ???
Configuration for ESP32
{"NAME":"HUZZAH32","GPIO":[0,0,0,0,4709,0,1,1,1,288,1,1,1,1,0,1,0,0,608,640,0,4705,4704,1,0,0,0,0,1,1,4706,4710,4708,0,0,4707],"FLAG":0,"BASE":1}
Flashing instructions for tasmota32 firmware.

Template Notes

The provided template sets up the I2C pins (GPIO22/SCL, GPIO23/SDA) as well as 7 ADCs for the pins labeled A0-A5 on the board and the VBAT sensor. 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.

Device Notes

The board has a resistive divider connected to VBAT that goes into pin GPIO35/ADC1_7. 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.

Adafruit HUZZAH32 Feather Bottom

Pinout information

Product overview