Controlling small RF device with arduino

Projects General Guidance
1

Hello,

I'm looking to control a small battery powered device, which uses a 315 mhz remote control with 3 buttons. I was able to use a receiver (purchased here: 315Mhz Wireless RF Transmitter Module + Receiver Alarm Arduino DIY USA | eBay), and the rc_switch library (using recieveDemo_advanced) to receive some codes/commands from the remote, like the one posted below:

Decimal: 26010 (16Bit) Binary: 0110010110011010 Tri-State: not applicable PulseLength: 503 microseconds Protocol: 2
Raw data: 5132,528,860,852,548,808,588,96,1280,108,1280,808,596,56,1324,764,640,748,648,40,1340,712,696,692,2072,700,660,28,1352,736,2056,24,1328,

I'm trying to send the codes I collected back to the device, to control it in the same way as the controller, but so far haven't had any luck. Is the 315 mhz transmitter I bought capable of 'speaking' to the device in the same way its controller does? The transmitting code I've been using is below:

/*
  Example for different sending methods

  https://github.com/sui77/rc-switch/

*/

#include <RCSwitch.h>
int input;

RCSwitch mySwitch = RCSwitch();

void setup() {

  Serial.begin(9600);

  // Transmitter is connected to Arduino Pin #10
  mySwitch.enableTransmit(10);


  // Optional set protocol (default is 1, will work for most outlets)
   mySwitch.setProtocol(2);

  // Optional set pulse length.
   mySwitch.setPulseLength(500);

  // Optional set number of transmission repetitions.
  // mySwitch.setRepeatTransmit(15);

}

void loop() {


  if (Serial.available() > 0) {

    input = Serial.read();
    Serial.println(input);
  }
  else {
    input = -1;
  }

  switch (input) {
    case '-1':
      // do nothing
      break;
      
    case '1':
      // power button
      mySwitch.send("0110010110011010");
      Serial.println("power button");
      break;
    case '2':
      // top once
      mySwitch.send("1011010101001010");
      Serial.println("top once");
      break;
    case '3':
      // top hold
      mySwitch.send("1011111001000001");
      Serial.println("top hold");
      break;
    case '4':
      // bottom once
      mySwitch.send("1011101001000101");
      Serial.println("bottom once");
      break;
    case '5':
      // bottom hold
      mySwitch.send("0111100110000110");
      Serial.println("bottom hold");
      break;
    default:
      //Serial.println("unknown entry");
      break;

  }


}

Thanks

2

Hi, I don't know if this will help. Here's a link to another post. https://forum.arduino.cc/t/rcswitch-how-to-control-duration-of-signal/411667

I was trying to control my SunForce Solar LED string lights, with a remote control. I did the same as you, using rc_switch to sniff the Remote Controller codes. I pasted that into the Send Demo. The lights would blink on and the shut off. They would not stay on. By changing the setRepeatTransmit() to a number between 2-8, the lights would stay on until the signal was sent. Numbers higher that 8 did not work.
You might try changing the setRepeatTransmit() numbers

Good Luck

3

Interesting, ill have to give that a shot, thanks!

4

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