Review on 🔌 Smallest Arduino Microcontroller Seeeduino XIAO - SAMD21 Based, Enriched Interfaces, Fully Compatible with Arduino IDE, Ideal for Projects Requiring Arduino Micro, 1pc by Michael Hemmig

I bought a few of these because I was interested in making some compact/portable circuits. I'm not disappointed. I got it up and running in minutes and have been driving it to death for the past two weeks with no major issues so far. If it doesn't work predictably, my first suspicion would be the hardware. A lot happens between Xiao and your PC, especially when you plug a USB hub into the mix. The first thing to check if there is any jitter is that your cable is correct (USB-C ***3.1***) and that you have the supporting hardware on your PC/hub. If you're still having trouble, Seeeduino has a forum on its website with a section dedicated to Xiao. As mentioned, this is not an entry level board, but a major step up from the Arduino Uno. Once you grasp the basic terminology and understand what each exit does, the learning curve won't be very steep. You will need soldering equipment and decent soldering skills. You can also print out the pinout and keep it with you as you work until you get used to it as the font is too small to read on the board.