mCookie Core modules are the brain of the Microduino platform. Core modules contain the micro-controller which drives electronics projects on the Microduino platform. One core module is required per project. Each core modules have different abilities depending on their micro-controller. Most core modules are compatible with an existing Arduino board. mCookie Core Programmers (such as mBattery or mCookie USBTTL) are required to upload sketches from the Microduino IDE to core modules. Core modules are outlined in red.