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Arduino
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Rollend Materieel
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Programming Arduino
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DR5000













































14. Volt Ampere Meter

4-Bit DC 0-200V 10A Voltmeter Ammeter Blue+Red LED Amp Dual Volt Meter Gauge

This 2 in 1 Current and Volt gauge can measure between 0.01 and 9.99A with an accuracy of +/-4% and Voltage between 0-30VDC. Tiny trim potentiometers on the back of this gauge also allow it to be adjusted.
Connecting this combined current/volt meter is a little more difficult than a standard Volt Gauge. The display ground wire is internally connected to the output current sensor wire so specific care needs to be taken when connecting these sensors. Firstly, knowing what each wire is used for would be important:
Thick Red Wire – Input side for Current Sense circuit
Thick Black Wire – Output side for Current Sense circuit
Thin Red Wire – Power wire for gauge display (3.5 – 30VDC)
Thin Black Wire – Ground wire for gauge display.
Thin Yellow Wire – Voltage Sense wire

The easiest and safest way to use the meter is to have no electrical connection between the powering and sensing current. That is, connect something like a 9V battery to the thin red and black power wires and you can put the current sensor in anywhere you want in the circuit. As long as the circuits are totally separate this will work great.
Features

Example:



Adjustment trim potentiometers:
Current:
Voltage:


ref: