![MakerHawk USB 3.0 Tester, USB Power Meter, 3.7-30V 0-4A Voltage Tester Multimeter, USB Current Meter Tester, IPS Color Display Voltmeter Ammeter, USB Charger Tester AT34 (1PCS) - - Amazon.com MakerHawk USB 3.0 Tester, USB Power Meter, 3.7-30V 0-4A Voltage Tester Multimeter, USB Current Meter Tester, IPS Color Display Voltmeter Ammeter, USB Charger Tester AT34 (1PCS) - - Amazon.com](https://m.media-amazon.com/images/I/61cO1Dr-p-L._AC_SS450_.jpg)
MakerHawk USB 3.0 Tester, USB Power Meter, 3.7-30V 0-4A Voltage Tester Multimeter, USB Current Meter Tester, IPS Color Display Voltmeter Ammeter, USB Charger Tester AT34 (1PCS) - - Amazon.com
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Measuring grid power consumption with an ACS712 Hall effect sensor connected to an Arduino – thesolaruniverse
![MakerHawk USB Power Meter Tester, Bluetooth USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - - Amazon.com MakerHawk USB Power Meter Tester, Bluetooth USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - - Amazon.com](https://images-na.ssl-images-amazon.com/images/I/71Gf-tJJFRL._AC_SL1500_.jpg)
MakerHawk USB Power Meter Tester, Bluetooth USB Tester, Type-C Current and Voltage Monitor, USB Safety Tester, PD Battery Capacity Meter, Digital Color LCD Display Multimeter - - Amazon.com
![Simple USB Power Tester based on ATtiny45/85 and INA 219. You can switch between different screens by pressing the SET button. | Usb, Arduino projects, Power Simple USB Power Tester based on ATtiny45/85 and INA 219. You can switch between different screens by pressing the SET button. | Usb, Arduino projects, Power](https://i.pinimg.com/originals/9e/07/b1/9e07b113fd22bba87b1295d668ac6518.png)