I have already made some devices using SeeedStudio’s Seeeduino Nano microcontroller ... all 5V Arduino microcontroller boards. Maybe it works on 3.3V but I have not tried it yet. To understand the ...

There are, however, still three other ways you can power your Nano: via the USB port, VIN pin, and 5V pin. Despite the massive differences in their sizes and purposes, all Arduino boards have one ...