M5Stack ATOM Matrix ESP32 Development Kit
The ATOM Matrix, at only 24 x 24mm, is the most compact development board in the M5Stack development kit series. The fits-in-your-change-pocket size computer contains a ESP32-PICO-D4 chip, which comes integrated with WiFi, Bluetooth®, and 4MB of integrated SPI flash memory.
Pinout
- USB-C
On-board USB Type-C used to load code and debug with prints; product page states board power is 5V @ 500mA.
Type · power and dataVoltage · 5V power input from USB-C per Adafruit product page specs - Grove / STEMMA-compatible JST 2.0 PH port
External Grove/STEMMA-compatible port for I2C, general I/O, and UART expansion as stated on the Adafruit product page.
Type · connector - G19
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Type · gpio - G21
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Type · gpio - G22
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Type · gpio
Start wiring
UART · SPI · 5V power input from USB-C per Adafruit product page specs
Confirm the data interface matches your host board.
Module pins: G19, G21, G22, G23, G25, G33. Schematik maps them to your board in the app.
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