D13 output can also be used to enable/disable a water pump/similar controller circuitry. ... Arduino Try Out. From the circuit diagram of the module, it is clear that, apart from the module only a few ...

Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty one-channel SMS relay. The device is, in fact, an “isolated electric switch” that can be controlled through the messaging app on your ...

The relay board is meant to fit inside the ... 27 thoughts on “ Arduino Controlled Four ... The Mains and control circuits should be better isolated from each other to lessen the chance of a ...

Now that summer is coming, it’s time to break out the Air Conditioners! There are some old AC units out there that still work just fine, but nowadays we are used to everything being remotely … ...