@pugwash I've just learned why delay is a problem as it was starting to affect something else in the project. Thanks for educating me, I've now change...

Thank you everyone that contributed to this thread, I have managed to solve the problem. ? ? ? A big thank you for educating me that i was being re-s...

Oh and just to clarify there is extra code but I didn't post it in my original message as it all runs fine so didn't want to over complicate the forum...

I am actually a complete beginner in programming micro-controllers so I really appreciate all the info provided by everyone. I shall do some research ...

@overbyte Thank you for your reply. I will change it to IF and let you know how I get on. ?

@dronebot-workshop Hello and thank you for your reply and welcoming me to the forum. I actually want it to repeat so that's why I put it in the loop s...