The Mini Power Meter available at Adafruit is a convenient way to easily display the voltage, current, Watts, mAh and mWh in a circuit. The meter has a built-in LCD display to show all the information it’s capable of gathering. And besides the typical voltage and watts and amps it will also calculate cumulative Watt hours and milliamp hours over time and display the ambient temperature. You don’t need any code, no calculations, or any data logging: it does it all for you!
They give it a 8 out of 10, saying it’s a “A nice addition to understand your circuit’s power levels.”
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