Many components work with the boiler assembly, including the water flow switch. This switch has testing procedures for verifying its functionality. The flow switch test procedure requires an ohmmeter, ...

Note: This example is abstracted from the forum, which was done by Charles Gantt. Thanks for his contribution.Let's see how it works. This is part of a project I have been working on and I thought I ...

The best implementation for this use case is WEMOS D1 mini PRO, since a large WiFi range required. And it provides a 5v supplier pinout on board needed for the water flow sensor.