No documentation. No support. If you receive this board it must be because you are already using it. If you are new to this architecture, buy a real one. This isn't the kind of experience you want when trying to gain confidence in the hardware. It keeps hanging in bootloader mode and won't accept downloads. I was able to do a few basic sketches, but with what you "saved" to get that cheap beer, you're wasting your time. This user also sells it for about double the price, by the way. Don't expect any help, no additional support from the manufacturer. Also, don't look for help on arduino.cc. Don't go near RobotDyn anymore.
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