I need to make a Raspberry PI expansion board. I already have the base schematic, but i need someone to make it normalized, i need it to be professionally designed. On this board a will use: 1 x MCP23017, 1 x ULN2803, 1 x MCP3008. I need someone who already own a Raspberry PI for measurement etc. I want to make the majority of the output goes thru a strap cable to another little board with this connector on it: CPC 2-208224-1. I would like to have a place onboard to connect a gps receiver if need be. The scematic is pretty simple, But i need someone to put it to standard, i need circuit protection, stability etc. I want to power the PI from this expansion board with a 5v power supply. I need someone that know electronics and connector type, I am in Canada i we must use part that are easily avaible here. Thanx a lot!