The perf module is a quick and easy way to prototype a circuit for the littleBits library. It's a standard 0.1" perfboard with a vcc and ground bus connected to our bitSnap connectors. Use it to quickly prototype with different sensors and components by soldering directly to the perf module.Use the perf to get started developing your own module for the bitLab. Want more? Our Hardware Development Kit (HDK) has the works: 2 proto modules, bitSnaps and a perf module.