
105-LED 15x7 CharliePlex LED matrix FeatherWing in cool white. Driven by an I2C CharliePlex driver; compatible with all Feather boards.
3.3V Feather power and logic rail used by the LED matrix; Adafruit Learn states the matrix uses the 3V pin for power and logic and typical current is about 40 mA depending on LEDs lit.
Ground return for the LED matrix; Adafruit Learn states the matrix uses the GND pin for power and logic.
I2C clock for IS31FL3731 LED matrix control; Adafruit Learn states all LED control is over I2C and SCL must be connected.
I2C data for IS31FL3731 LED matrix control; Adafruit Learn states all LED control is over I2C and SDA must be connected. Default I2C address is 0x74, configurable to 0x77 by solder jumper.
Shield
Confirm the data interface matches your host board.
Module pins: 3V, GND, SCL, SDA. Schematik maps them to your board in the app.
About 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.
10 I/Os PLC Module - CPU Arduino Nano (Optoisolated Output) visual preview
10 I/Os Relay Module - CPU Arduino Nano (Relay Output) visual preview
Adafruit METRO 328 - Arduino Compatible - with Headers visual preview
Adafruit Metro Mini 328 V2 - Arduino-Compatible - 5V 16MHz [STEMMA QT / Qwiic] visual previewAbout 75 boards across every Arduino generation: 5V Uno/Mega/GIGA, 3.3V MKR and Portenta, plus DFRduino and Bluno compatibles. Confirm the voltage rail before stacking any shield.
Boards · Arduino boards · 76 parts
10 I/Os Relay Module - CPU ESP32 (Relay Output) visual preview
Adafruit ESP32 Feather V2 w.FL Antenna - 8MB Flash + 2MB PSRAM visual preview
Adafruit ESP32-C6 Feather - STEMMA QT visual preview
Adafruit ESP32-S2 Feather - 4MB Flash + 2MB PSRAM visual previewWi-Fi and Bluetooth on a single chip, in every shape from Espressif DevKitC to Adafruit Feathers with STEMMA QT, DFRobot FireBeetles tuned for battery life, and Seeed XIAOs under a thumbnail.
Boards · ESP32 boards · 111 parts
:MOVE mini MK2 buggy kit visual preview
:VIEW text32 LCD Screen for the BBC micro:bit visual preview
16-Ch Servo Driver Breakout for micro:bit, I2C visual preview
2x40 Right Angle Edge Connector for micro:bit visual previewSpecialists: Teensy for high-clock audio and USB, Adafruit SAMD boards running CircuitPython or the Arduino IDE, proper STM32 eval kits, and the micro:bit classroom ecosystem. Schematik builds target ESP32, Arduino Uno, and Pico; come here when you have a specific reason to.
Boards · Other MCU boards · 226 parts
Adafruit DVI Breakout Board for HDMI Source Devices visual preview
Adafruit DVI Sock for Pico - Works with HDMI Displays visual preview
Adafruit Feather RP2040 with DVI Output Port - Works with HDMI visual preview
Adafruit MACROPAD RP2040 Bare Bones - 3x4 Keys + Encoder + OLED visual previewThe Raspberry Pi MCU line — Pico, Pico 2, and third-party boards on the same silicon — plus a deep bench of Pico-pinout displays, loggers, and radio modules that do nothing without a Pico plugged in.
Boards · Pico & RP2040 boards · 44 parts
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| 3V | second from left | power | 3.3V Feather power and logic rail used by the LED matrix; Adafruit Learn states the matrix uses the 3V pin for power and logic and typical current is about 40 mA depending on LEDs lit. | 3.3V |
| GND | fourth from left | ground | Ground return for the LED matrix; Adafruit Learn states the matrix uses the GND pin for power and logic. | 0V |
| SCL | to the left of SDA | signal | I2C clock for IS31FL3731 LED matrix control; Adafruit Learn states all LED control is over I2C and SCL must be connected. | |
| SDA | rightmost | signal | I2C data for IS31FL3731 LED matrix control; Adafruit Learn states all LED control is over I2C and SDA must be connected. Default I2C address is 0x74, configurable to 0x77 by solder jumper. |
Pan-Tilt HAT Kit