mCookie 102 is the DIY series of junior kits. mcookie is the second generation of Microduino. It uses a new combination of magnet adsorption and elastic pin connection. It is easier to use, and the colorful shape and LEGO can be combined to create a variety of novel applications. It's so simple. The package includes core, usb upload, 6-lamp array, interface board 4 basic function modules, and 8 sensors. With the graphical programming software, the threshold of creation is greatly reduced, and everyone in the true sense is an inventor!