Code works on UNO R3 not on MEGA 2560 R3

Projects Programming
1

Hello

I wonder if someone here can explain,why this code is working on,UNO R3 and not on MEGA 2560 R3.

When you power up Arduino,there will be a light on pin 9,then it will flash fast,its mean no communication.(slow flash,good communication)
This code is working on UNO,but not on MEGA.

I have two MEGA 2560 R3,both its the same the code is not working.

If someone have a mega to test,use a 5mm led and connect that with a resistor 220ohm,on pin 9

there was something wrong with the arduino mega board :slight_smile:

sow this post can delete.

2

I wonder if someone here can explain,why this code is working on,UNO R3 and not on MEGA 2560 R3.

I find it hard to believe that it does work on a UNO:

int relayPin1 = 41; //Accessory 1
int relayPin2 = 42; //Accessory 2
int relayPin3 = 43; //Accessory 3
int relayPin4 = 44; //Accessory 4
int relayPin5 = 45; //Accessory 5
int relayPin6 = 46; //Accessory 6
int relayPin7 = 47; //Accessory 7

UNO's don't have that many pins.

Links to the libraries that you are using would be useful.

Some serial output, too.

3

Do you have this type of code for all the new pins?

pinMode (relayPin1, OUTPUT);

4

Can I have the code ? I have both UNO and Mega 2560 . I can just load and test it for u

I can test with Led13 and LED9