NeoTrellis RGB Driver PCB for 4x4 Keypad

4x4 keypad driver PCB with per-key full-color NeoPixel RGB LEDs, compatible with Adafruit's standard elastomer button pads. Multiple tiles can be tiled and connected over I2C.

VIN
Power input for the NeoTrellis board, shown in the Adafruit NeoTrellis guide wiring table as VIN.
Type · power
GND
Ground reference for the NeoTrellis board, shown in the Adafruit guide wiring table as GND.
Type · ground
SDA
I2C data connection. The Adafruit guide maps SDA to I2C data.
Type · signal
SCL
I2C clock connection. The Adafruit guide maps SCL to I2C clock.
Type · signal
INT
Optional interrupt output. The Adafruit guide says INT can connect to a digital pin on the host microcontroller.
Type · signal
A0
I2C address solder jumper. The guide says address jumpers hard-code unique addresses for tiled boards.

Start wiring

I2C · Analog · USB · 3.3 – 5 V · Breakout

Confirm the data interface matches your host board.

Module pins: VIN, GND, SDA, SCL, INT. Schematik maps them to your board in the app.

Keypads

36 other options

Matrix keypads, analog ADKey boards, I2C keypad controllers, joysticks, and finished USB-HID keyboards are all here. Pin budget and simultaneous-press requirements are the splits that matter.

View all 36

4x4 Matrix Keypad visual preview
4x4 Matrix Keypad

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4 groups

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