Thanks Dennis, I will run the pots (4 of them) off the 5v and the buttons off the 3v. I have found out that i can glue the pins off my dupont cables together and make a sort of multi-pin plug. The sketch hasnt been sorted yet, I have one for 5 axis controller. I can edit that down to 4 and then add the button part. I will have 13 buttons, each to a separate pin so I will have to copy paste the routine for this and then test it.