Hi guys, I would like to make a transmitter with Arduino that is able (by taking a button) to open my house gate, how can this be done?
What’s your Programming Question?
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How is your house gate opened today? IS your project to be portable or powered from your mains supply?
Research 433MHz transmitters and receivers.
There are libraries available for that.
But it is likely not secure as someone else might be able to read-out the signal.
An option would be you provide encoding to the signal using a device ID and a time-stamp (which would change the signal encoding each minute or so) for instance. But you would have to decode that at the other end. This is not fail-safe however, they could still manage to get it open.
Quick cheap way would be get yourself a remote relay.
No matter what you do with encoding, rolling codes etc etc, in the end any gate can be opened by simply jumpering power to the motor.
We have not see the OP gate, but mine only need to pill the keeper holding the pivot pin to remove the moving arm from the gate and swing it open.
Whatever the OP has will require some type of mechanical devices to allow the gate to open and close and they are the easiest choice for someone to bypass any security.
There are so many options to open gate with a button that I only just mentioned one. And added something to it for fun.
Just like bluejets said, a modern remote relay is probably a good and safe way forward.
By looking at what they do you could start your own design on it if you like to do that.
But even with a modern relay module you still need a housing, power and all those things.
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