Adafruit Silicone Elastomer 4x4 Keypad and Driver Board - Adafruit ADA3954, By popular request, Adafruit have upgraded their popular Trellis elastomer button kits to have a PCB with full colour NeoPixel support! No more single-colour LEDs, you can now have any colour you like under the fantastic rubbery button pads. These 4x4 button pad boards are fully tile-able and communicate over I2C. With 5 address pins, you've got the ability to connect up to 32 together in any arrangement you like. With the trusty seesaw I2C-to-anything chip, you don't even need to manage the NeoPixel driving. That's right! Both the button management and LED driving is completely handled for you all over plain I2C. With both Arduino/C++ and CircuitPython/Python library support, you can use these pads with any and all microcontroller or computer boards. Perfect for your next cool interface, MIDI instrument, control panel ... wherever could benefit from beautiful diffused colourful buttons. For fast connection t