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Tiny Power Consumption Meter (0.1mA resolution)
by MagnusT
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# Tiny Power Consumption Meter
- Max: 20V supply
- 0.1mA resolution
- Max: 400mA load (1A or 2A also possible with lower resolution)
- Measure frequency 70Hz
Displays:
- mA and mW
- average mA and mW since start
- mAh and mWh since start
- Load V
- Measure frequency
- Run time
Ardunio code included
# Parts needed:
- Arduino Nano - ATmega328P
- Adafruit Feather INA219
- Display 0.91 inch 128x32 i2c SSD1306
Optional:
- 1A Schottky diode
- 100uF 30V (connect parallell to load)
.
##__Running the meter and the load from USB power only:__
| Display . . . . | Arduino . . . . | INA219 . . . . | LOAD |
|----------------- |----------------- |---------------- |-------- |
| VCC | 3.3V | 3.3V | |
| SCL | SCL | SCL | |
| SDA | SDA | SDA | |
| | D2 | RST (button) |
- Max: 20V supply
- 0.1mA resolution
- Max: 400mA load (1A or 2A also possible with lower resolution)
- Measure frequency 70Hz
Displays:
- mA and mW
- average mA and mW since start
- mAh and mWh since start
- Load V
- Measure frequency
- Run time
Ardunio code included
# Parts needed:
- Arduino Nano - ATmega328P
- Adafruit Feather INA219
- Display 0.91 inch 128x32 i2c SSD1306
Optional:
- 1A Schottky diode
- 100uF 30V (connect parallell to load)
.
##__Running the meter and the load from USB power only:__
| Display . . . . | Arduino . . . . | INA219 . . . . | LOAD |
|----------------- |----------------- |---------------- |-------- |
| VCC | 3.3V | 3.3V | |
| SCL | SCL | SCL | |
| SDA | SDA | SDA | |
| | D2 | RST (button) |
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