433 MHz remote switches

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1

I am currently working on a project to control my pc-fans with an Arduino and an DHT22. They should adjust to the temperature in the pc and can be switched on/of via a remote control.

At this point i am trying to send the on/off signal with a 433 MHz remote control. It's the Mumbi RC-10 and can be found in sets like the "Mumbi m-FS300" in Germany.

I tried to use the "ReceiveDemo_Simple" Example from the RCSwitch Library but nothing is received by the Module. When I send signals with another Arduino using the "SendDemo" Example it receives Data without a problem.

I am using a Arduino Mega which is connected to the receiver via the D3 pin.

The remote is using a HD R433M transmitter.

2

Hello i have no experience with that particular 433 socket brand But for some of the protocols you need to change :

const unsigned int RCSwitch::nSeparationLimit = 4300;

In: RCSwitch.cpp

I would try a few different values between 1000 and 15000

Also you can try increasing this to maybe 80 or 90:

int RCSwitch::nReceiveTolerance = 60;

one more thing if you are using "xy-mk-5v" receiver you might want to get another one as that one are REALLY hard to get to work property, if you cant get another one try making a "coil loaded 433 antenna" just google it and add caps close to the receiver 0.1uf and 100uf+

Best of luck!