Well let me see
I am on the arduino forum, the original post talks about the micro and the MKR photo relay board so I would think that it was probably the Arduino components.
Don't worry the AdaFruit Forums gave me excellent advise regarding using the Feather boards and wings so I went with their product and have exactly what I need.
One less sale for arduino and when we go to production in 4 weeks a lot less sales
Have a good night I won't bother anybody here again