Tiny Power Consumption Meter (0.1mA resolution)
prusaprinters
Tiny Power Consumption MeterMax: 20V supply0.1mA resolutionMax: 400mA load (1A or 2A also possible with lower resolution)Measure frequency 70HzDisplays:mA and mWaverage mA and mW since startmAh and mWh since startLoad VMeasure frequencyRun timeArdunio code includedParts needed:Arduino Nano - ATmega328PAdafruit Feather INA219Display 0.91 inch 128x32 i2c SSD1306Optional:1A Schottky diode100uF 30V (connect parallell to load).Running the meter and the load from USB power only: Running the meter and the load from external power supply 7-20V: Optionally you can connect a Schottky diode from the Arduino boards USB connector 5V pin to the Arduino boards VIN pin. Then you can connect power to either the USB connectorOR an external power supply to the VIN pin without rewiring anything. Arduino CodeYou might want to check back at some time since there might be updates to the code in main.ini. I use an Arduino Nano board that has Bluetooth (Keywish BLE-Nano) so I might add something with that, who knows...Category: Electronics
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