I found https://github.com/slackspace-io/imiev-remote-heater
The file there is named heater_on_tx.ino
The code:
#include <RCSwitch.h>
RCSwitch mySwitch = RCSwitch();
void setup() {
Serial.begin(115200);
// Transmitter is connected to Arduino Pin #10
mySwitch.enableTransmit(2);
// Optional set pulse length.
mySwitch.setPulseLength(402);
// set protocol (default is 1, will work for most outlets)
// mySwitch.setProtocol(2);
// Optional set number of transmission repetitions.
mySwitch.setRepeatTransmit(15);
pinMode(0,OUTPUT);
}
void loop() {
mySwitch.send("010101111110101010101000");
Serial.println("sent");
digitalWrite(0,LOW);
delay(2000);
digitalWrite(0,HIGH);
delay(8000);
}
The person there seems to use OVMS. Have someone else found this and tried it out?