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USB Power Tester based on ATtiny45/85

Simple USB Power Tester based on ATtiny45/85 and INA 219. You can switch between different screens by pressing the SET button.

Parameter	Value
Voltage	3V - 12V
Current	max 5A
Precision	4mV / 1mA

![IMG_20200528_172239_x.jpg](https://image.easyeda.com/pullimage/moE1NVdTYPggxly5Qm69yMyY5wfAJkTwBuSVVanD.jpeg