Omen-Mag?
I was just looking around for spyder parts for a spyder mag frame and I came across the Evil Omen 1.5 board and solenoid found here. It looks like you can make elctro frame with it. I'm think about it but I don't want to mess with my RPG frame. I just read the details, it only has semi mode. Its just an idea I don't think I would go out and do it but it does look do-able if you just want semi only.