Hi lesept.Thank you for your reply.The code I have I changed very slightly from a program from the internet.I will try to find the original.In the original I was = to -1 which made one led move so I changed it to -4 and it worked.No idea how as I have had my Arduino for around 2 weeks and am just beginning to learn from scratch.I am not sure how I would implement your code.Would I just copy and paste this as is ? I don't think I would as I think I have to define parameters first.Please forgive the (noob) questions.I am 59 years old but very willing to learn.
Thank you again.