Arduino Ethernet Shield 2 Web-client to control Relay. DigitalWrite Breaks code

Projects Programming
11

HI Paul,

After further Testing i have found out the following.

Firstly, i replaced the Relay completely with an Velleman 5v 4 relay board.

I tested this with a digitalWrite(RELAY_4, HIGH); line in the Loop, this worked ok!

However, when i added an IF Statement like below, the code failed. resulting in the HTTP 404 error as mentioned earlier. after more testing i can confirm the issue seems to be related to the comparison using v_state.

I gate the same issue whether the relay board is connected or not.

  if(v_state == "WAIT")//set beacon light based on status
    {
        digitalWrite(RELAY_4, LOW);  
        digitalWrite(RELAY_3, LOW);  
        digitalWrite(RELAY_2, HIGH);  
        digitalWrite(RELAY_1, LOW);  
        Serial.println("Relay 2 set.");
    }