/* ===============================================================
      Project: 8 Channel 5V Relay Module Sequencer
      By Robert Cummings
  ================================================================== */

/*
  Connect 5V on Arduino to VCC on Relay Module
  Connect GND on Arduino to GND on Relay Module
  Delay time is in milliseconds.  1000 delay = 1 second, 2000 delay = 2 seconds, 60000 = 1 minute, etc.*/
  
// constants won't change. They're used here to set pin numbers:

const int ledPin =  13;      // the number of the LED pin

#define CH1 1                 // Connect Digital Pin 1 on Arduino to CH1 on Relay Module
#define CH2 2                 // Connect Digital Pin 2 on Arduino to CH2 on Relay Module
#define CH3 3                 // Connect Digital Pin 3 on Arduino to CH3 on Relay Module
#define CH4 4                 // Connect Digital Pin 4 on Arduino to CH4 on Relay Module
#define CH5 5                 // Connect Digital Pin 5 on Arduino to CH5 on Relay Module
#define CH6 6                 // Connect Digital Pin 6 on Arduino to CH6 on Relay Module
#define CH7 7                 // Connect Digital Pin 7 on Arduino to CH7 on Relay Module
#define CH8 8                 // Connect Digital Pin 8 on Arduino to CH8 on Relay Module

void setup() {
  
  //Setup all the Arduino Pins
  pinMode(CH1, OUTPUT);
  pinMode(CH2, OUTPUT);
  pinMode(CH3, OUTPUT);
  pinMode(CH4, OUTPUT);
  pinMode(CH5, OUTPUT);
  pinMode(CH6, OUTPUT);
  pinMode(CH7, OUTPUT);
  pinMode(CH8, OUTPUT);
 
  //Turn OFF any power to the Relay channels
  digitalWrite(CH1, LOW);
  digitalWrite(CH2, LOW);
  digitalWrite(CH3, LOW);
  digitalWrite(CH4, LOW);
  digitalWrite(CH5, LOW);
  digitalWrite(CH6, LOW);
  digitalWrite(CH7, LOW);
  digitalWrite(CH8, LOW);
  
  delay(2000);                 //Wait 2 seconds before starting sequence
  }

void loop() {

    
    digitalWrite(CH1, HIGH);     //Relay 1 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH2, HIGH);     //Relay 2 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH3, HIGH);     //Relay 3 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH4, HIGH);     //Relay 4 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH5, HIGH);     //Relay 5 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH6, HIGH);     //Relay 6 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH7, HIGH);     //Relay 7 on
    delay(1000);                 //Wait 1 second

    digitalWrite(CH8, HIGH);     //Relay 8 on
    delay(1000);                 //Wait 1 second
    
   
    digitalWrite(ledPin, HIGH);  //turn LED on:

  
  }