Pi-Top - pi-topPROTO
Got yourself a Pi Top or Pi Top CEED and want to start hacking it! You need the Pi-Top PROTO!
Pi-TopPROTO is a HAT compatible add-on board for your pi-top or pi-topCEED that allows you to prototype electronics! Simply slide the pi-topPROTO into the modular rail of your Pi-Top to add any custom functionality you can think of!