December 30, 2013 AT 5:19 pm

Adafruit Trellis – Open source backlight keypad driver system

Adafruit Trellis – Open source backlight keypad driver system! Trellis is an open source backlight keypad driver system. It is easy to use, works with any 3mm LEDs and eight tiles can be tiled together on a shared I2C bus.

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