Hi, A question on the reset terminals of my nano board. You have to set a low on these terminals to restart the program. When there is no low are the terminals left floating? I don't think this would be the case. Are the terminals connected to 5v normally? This would need a circuit on the board. Also a resistor so there is no short when a ground is set at the terminal.
There is a pull-up resistor on the reset pin.
UNO
And this is for the Nano
You can find all schematics on the Arduino product pages on https://store.arduino.cc/ ; complete schematic: https://content.arduino.cc/assets/NanoV3.3_sch.pdf