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Hello guys, today I'll show you how to make a simple voltmeter/ammeter, so you can easily measure the voltage, current or power consumption of any charger or device, that uses the common 5.5mm connectors.
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Schematic: i.imgur.com/gs...
Schematic with 4 digits volt/ammeter: i.imgur.com/W1...
Components list:
The 3 digits volt/ammeter is not available anymore,
new 4 digits volt/ammeter: s.click.aliexp...
5V boost converter: s.click.aliexp...
5.5*2.1mm plug (male, 5A, 20AWG): s.click.aliexp...
5.5*2.1mm female connector: s.click.aliexp...
TP4056 charging module: s.click.aliexp...
Plastic box 70x45x30mm (slightly bigger): s.click.aliexp...
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