ARDUINO MEGA PROTO SHIELD REV3 (PCB) makes it easy to design custom circuits. You can solder parts to the prototyping area to create your design or use it with a small solderless breadboard (not included) to quickly test circuit ideas without soldering. It has extra connections for all the Arduino MEGA I/O pins and has room to mount through-hole and surface mount ICs. It's a convenient way to turn your custom Arduino circuit into a single module.
