Plenty of IoT hackers use Raspberry Pi and Arduino for their projects. The PowMeter Shield Nano for Arduino Nano is a handy tool that lets you monitor your Arduino project’s power consumption. It has a small footprint and attaches directly to your Nano.
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You will be able to use this to monitor USB voltage and current when powered through a USB port. The OLED screen can be used on either side of the board.
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