i was told that it could be the micro freezes issue.
current nothing is extreme (less than 3 volt , 500mA).
Please don't raise the same issue in two different threads.
I had a quick look at the other thread, but I don't have a Due. You would need to provide a wiring diagram so the Due experts can understand what you were doing.
posted in the programming questions section because i thought it was something in programming that i don't know.