Review on 🔌 Adafruit Metro M0 Express (PID 3505) - CircuitPython-Compatible ATSAMD21G18 Microcontroller by Jeff Bundrick

I bought this after getting the Circuit Playground Express. I've been programming Arduino for years and when you do some basic testing it's great. I've only programmed in CircuitPython at the moment, but the great thing is that the number of test cycles you can get is much higher than what you get with Arduino since there is no compile cycle. If you're concerned about speed, don't use CircuitPython as I've encountered a significant speed limit. I'm using a NeoPixel 60 ring and on some of the effects I've programmed I don't have to pause/sleep/delay because of the interpreter. I'm still working with this board and haven't tried all the features yet. The next task is to test the analog to see what it is capable of. It would be interesting if this could produce real waveforms.