The Arduino IDE is extremely similar to C++, but judging from the sketches you can find on the Internet, you’d never know it. Simpler Arduino projects can make do with just toggling IO pins, … ...

The current supplied on the GPIO is vastly less than Arduino – so some power-hungry devices, sketches, or samples won’t work with this. source/sink is 10/25 mA vs 40/50 mA on Arduino ...