M5Stack ATOM Matrix ESP32 Development Kit

Compact 24×24 mm ESP32-PICO-D4 board with a 5×5 RGB LED matrix, IMU (MPU6886), IR LED, Grove/Stemma JST connector, and USB-C programming port. Includes a programmable button; mounts via an M2 screw hole.

Logical pinout · physical placement not verified

USB-C
On-board USB Type-C used to load code and debug with prints; product page states board power is 5V @ 500mA.
Type · PowerVoltage · 5V power input from USB-C per Adafruit product page specs
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
G23
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Type · GPIO
G25
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Type · GPIO
G33
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Type · GPIO
Programmable button
General-purpose programmable button below the RGB LED matrix, described on the Adafruit product page.
Type · Control
IR LED
On-board infrared LED / infrared transmission interface described on the Adafruit product page.
Type · Unknown

Pin	Type	Function	Voltage
USB-C	Power	On-board USB Type-C used to load code and debug with prints; product page states board power is 5V @ 500mA.	5V power input from USB-C per Adafruit product page specs
G19	GPIO	Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
G21	GPIO	Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
G22	GPIO	Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
G23	GPIO	Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
G25	GPIO	Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
G33	GPIO	Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
Programmable button	Control	General-purpose programmable button below the RGB LED matrix, described on the Adafruit product page.
IR LED	Unknown	On-board infrared LED / infrared transmission interface described on the Adafruit product page.

Logical pinout · physical placement not verified

Pin details

9 connections

USB-C
On-board USB Type-C used to load code and debug with prints; product page states board power is 5V @ 500mA.
PowerVoltage · 5V power input from USB-C per Adafruit product page specs
G19
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
GPIO
G21
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
GPIO
G22
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
GPIO
G23
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
GPIO
G25
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
GPIO
G33
Exposed general-purpose pin listed in the Adafruit product page PIN Port list.
GPIO
Programmable button
General-purpose programmable button below the RGB LED matrix, described on the Adafruit product page.
Control
IR LED
On-board infrared LED / infrared transmission interface described on the Adafruit product page.
Unknown

ESP32

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