How to Build a Liquid Level Gauge Circuit with an Arduino

In this project, we will build a liquid level gauge circuit with an arduino. This is a circuit in which a liquid level can be monitored through a gauge. We read the liquid level from the gauge (low, medium, or high), just as you see above. With a microcontroller such as the arduino, building this circuit is a pretty simple feat. The microcontroller can read the analog voltage from the liquid level sensor an ...

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