Adafruit Trellis Monochrome Driver PCB

The Trellis Monochrome Driver PCB from Adafruit is a specialized circuit board designed for use with a 4x4 elastomer keyboard setup. This open platform allows for easy integration of 3mm LEDs and provides the capability to connect up to eight boards via a common I2C bus. The PCB is equipped with 4x4 pads that are perfectly aligned with the arrangement of the LEDs. The integrated circuit handles the processing of key inputs and controls the LED lighting, while a microcontroller, such as an Arduino, is required to read the data and activate the LEDs accordingly. The Trellis board is designed to offer a simple and effective solution for creating custom keypads and LED displays without having to worry about issues like "ghosting" with simultaneous key presses.

• Compatible with 3mm LEDs and 4x4 elastomer keyboards
• Allows tiling of up to 8 PCBs for expanded applications
• Integrated circuit for handling key inputs and LED control
• Diode multiplexing to prevent ghosting with multiple key presses
• Easy connection via I2C with just 2 wires for up to 128 keys and LEDs.