“This is a great little device and does everything I want it to. Very flexible for such a tiny micro. The first one I bought wasn't working at all (no LEDs) but the Pi Hut replaced it very quickly, free of charge, and the replacement is working really well. I can upload programmes through the USB port, which is really useful, and I love the multicoloured LED - which can essentially be any colour you like. Great microboard for wearable or miniature projects. As always with the Arduino (and Adafruit) family, it delivers what it says - good value and capability.”
“A nice board that has more capabilities than the original. A bit memory poor for Circuit Python but more than enough memory for the Arduino platform. I picked it up to investigate the MakerCode platform.”
“Gemma M0 does not work. I tried all types of boards (black and teal) different bootloader and Gemma failed to get operational. I tried everything I found on the web. I'm sorry, but I have to replace Gemma with Arduino.”