ChristmasRenardController.ino

// WORKING VERSION WITH RENARD PROTOCOL USING SERIAL3 (PINS 14 TO FTDI RX AND 15 TO FTDI TX)

// This code was written by Victor Perez for doityourselfchristmas.com based on the code from Zparticle, Si_champion and Neil Tapp.
 // To adapt the code to your case, just change this top section, with the #define lines.
 
 // Includes the watchdog timer library
 #include <avr/wdt.h>
 
 // KG add for renard. Include the Arduino Renard library by Bill Porter
 #include <Arduino-Renard.h>
 
 // This sets how many channels will vixen be sending. Can be set to any number from 1 to 48 for Arduino Mega, and 1 to 18 for Arduino Uno.
 #define CHANNEL_COUNT 8

 Renard renard; //KG add for renard

 byte incomingByte[CHANNEL_COUNT];  //KG add for renard
 
 // speed for the com port for talking with vixen. From 9600 to 115200. Use the same speed as set in Vixen.
 #define VIXEN_COM_SPEED 57600
 
 // Timeout waiting for serial input before going to random mode (in milliseconds).
 #define TIME_OUT 1000
 
 // If the relays turn On and Off opposite to Vixen sequence, change "#define MODE NOT_INVERTED" for "#define MODE INVERTED"
 #define NOT_INVERTED 0
 #define INVERTED 1
 #define MODE NOT_INVERTED

 // which pins control which channels
 // You can change these assignment to use different pins, but be very careful to not repeat the same pin number for 2 channels. 
 // DO NOT use pings 0 and 1, as those are for the serial port to talk to the computer.
 #define CH01 5
 #define CH02 6
 #define CH03 7
 #define CH04 8
 #define CH05 9
 #define CH06 10
 #define CH07 11
 #define CH08 12
 int channels[] = {CH01,CH02,CH03,CH04,CH05 ,CH06,CH07,CH08};

 // KG subtract for renard - int incomingByte[CHANNEL_COUNT];

int i = 0;     // Loop counter
volatile unsigned long  timer_a = 0; // new line

//setup the pins/ inputs & outputs
void setup(){

renard.begin((uint8_t*)&incomingByte, CHANNEL_COUNT, &Serial3, 57600); //KG add for renard

  // enable the watchdog timer with a time of 1 second. If the board freezes, it will reset itself after 1 second.
  wdt_enable(WDTO_1S);
  
  // specifically for the UNO
  //sei();  

// initalize PWM Channels / Pins
 for (i=0; i < CHANNEL_COUNT; i++){
    pinMode(channels[i], OUTPUT);
  }

// set all the realys to off to start with
if (MODE == NOT_INVERTED) {
 for (i=0; i < CHANNEL_COUNT; i++){
     digitalWrite(channels[i], LOW);
 }
}

else {
 for (i=0; i < CHANNEL_COUNT; i++){
     digitalWrite(channels[i], HIGH);
 }
}

 testSequence();
 
// set up Serial according to the speed defined above.
  Serial.begin(VIXEN_COM_SPEED);
}

void loop(){
  
   if (renard.receive()) {   //KG modified from VictorPV original
     wdt_reset(); // resets the watchdog
     timer_a = millis (); // new line
     int uno = Serial.read();
  
     if (MODE == NOT_INVERTED) {
      for (i=0; i < CHANNEL_COUNT; i++){
      int value = incomingByte[i];
      if (value > 5) {
        analogWrite(channels[i], value);
      }
      else {
        digitalWrite(channels[i], LOW);
      }
      }
     }
     else {
     for (i=0; i < CHANNEL_COUNT; i++){
      int value = incomingByte[i];
      if (value < 25) {
        analogWrite(channels[i], (255-value));
      }
      else {
        digitalWrite(channels[i], HIGH);
      }
      }
     }
     
   }
// Random mode code. Random mode starts if no serial input has been received in TIME_OUT millisenconds
   else {
     wdt_reset(); // resets the watchdog
     unsigned long diff = millis() - timer_a;
     if (diff >= TIME_OUT) {
       timer_a = millis ();
       int random_a = 0;
       for (i=0; i < CHANNEL_COUNT; i++){
         random_a = random(0, 2);
         if (random_a == 0) {
           digitalWrite(channels[i], LOW);
         }
         else {
           digitalWrite(channels[i], HIGH);
         }
       }
     }
   }
}

void testSequence(){

if (MODE == NOT_INVERTED) {
 for (i=0; i < CHANNEL_COUNT; i++){
   wdt_reset(); // resets the watchdog
   digitalWrite(channels[i], HIGH);
   delay (500);
   digitalWrite(channels[i], LOW);
 }
}

else {
 for (i=0; i < CHANNEL_COUNT; i++){
   wdt_reset(); // resets the watchdog
   digitalWrite(channels[i], LOW);
   //kg delay (500);
  //kg digitalWrite(channels[i], HIGH);
   }
 }
}

Thanks, good luck with your degree.

If using a UNO remove the serial number it should read like this
renard.begin((uint8_t*)&incomingByte, CHANNEL_COUNT, &Serial, 115200); //KG add for renard

This program was written for the Mega which will allow Serial3

https://www.arduino.cc/reference/en/language/functions/communication/serial/