Clone RF 433 Signal and repeat it

Other Hardware General Electronics
1

Hello,

I am trying to control my 'smart' light switch using an Arduino. I am already controlling my general plug sockets using a similar method.

The light switch I am using:

I am new to Arduino's and hardware so please excuse anything which may seem stupid or dumb.

However, from taking apart the remote I noticed the following components:

  • LR1 433.92 - I am guessing this is the transmitter
  • 7130-1 - From googling this I believe it is a voltage regular
  • 16453QT - I can read the other information on the chip but believe it could be the encoder?

I have tried using RCSwitch however it does not recognize the RF signals so I believe this could be due to it not supporting the protocol the remote uses?

I tried just printing the digital pin and I can see that the signal is received by the receiver I am using as it always starts or ends with the following pattern. See image attached for serial plotter output below is the code I used on my arduino.

void setup() {
Serial.begin(9600);
}
void loop() {
Serial.println(digitalRead(2));//Do nothing here
}

I have used RCSwitch for other remotes and works fine.

After searching for hours and hours across several days I believe the issue is related to the protocol and that RCSwitch does not support it.

If anyone can walk me through obtaining it that would be fantastic!

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2

ksudb:
I have tried using RCSwitch however it does not recognize the RF signals

Did you get no response from the "ReceiveDemo_Advanced" sketch?

Yours,
TonyWilk

3

That switch appears to have some kind of dimming capability, which rules out using RCswitch as Rcswitch is a very simple protocol which is only designed to send 2 states, on and off.
Its normally not used for dimmers.
Its going to be difficult to reverse engineer this switch, unless you can find someone who has already done it.

4

For general approaches to reverse engineering RF remotes, see this tutorial.

5

You may have to handle raw instead of simple hex. The library should've come with sketches for you to look at.