[Andy]’s keypad uses the very affordable Seeeduino Xiao, a tiny board that natively runs Arduino code. Since it has a SAMD21 processor, [Andy] chose to run CircuitPython on it instead.

Developing in CircuitPython is easy because the entire environment — the code, toolchain, and the devices — are all extremely portable.

Makers and musicians searching for a new project to keep them busy this weekend may be interested in a new metronome built using the CLUE sensor-packed development board and CircuitPython code ...

CircuitPython is a programming language designed to simplify experimenting and learning to code on low-cost microcontroller boards. With CircuitPython, there are no upfront desktop downloads needed.