The Adafruit KB2040 is a drop-in replacement for a typical Arduino Pro Micro, which happens to be a common part of custom keyboards and controllers. This board allows you to take advantage of its built-in dual core 32-bit Arm Cortex M0+ processors and 264kB of RAM, and 8MB of SPI flash in your next build. With all that power, and the 20 GPIO pins, you can have up to 100-keys matrices. That makes for a great keyboard!
The board also has castellated edges for easily adding it as a daughter board to your PCB, or you can use the STEMMA QT connector and skip the soldering altogether! A few other nice features are the use of a USB-C connector, breakouts for alternative USB connectors if needed, and a colorful little RGB NeoPixel. Head to the Adafruit website to learn more about building your own keyboard with the RP2040 Kee Boar Driver.
The board gets a 10/10, “Another great micro for building a custom keyboard”.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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