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

[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.

CircuitPython, a version of Python designed to run on microcontrollers, is used to program the metronome. The code is straightforward and can be customized to suit your specific needs.

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.