Thank you for the replys, i will order the prohat, hopefully they deliver to the U.S

I also like the pin template.

I was reading a magazine that there is a hat that I can put on my pi 2B that will isolate my inputs so I don't burn them out by putting the wrong voltages on the inputs or outputs. I don't remember the item name and when I google I get a bit confused. Does anyone have a link or name of a device that...