ButtonDuino is TINY! At less than 18.64 mm x 18.25 mm (0.73in x 0.718in), Buttonduino is smaller than a quarter but still packs the power of the Arduino platform. It is small enough to be placed in any project. ButtonDuino is Open-Source and Arduino Compatible! Best feature is that that ButtonDuino's schematics, code and bootloaders are all FREE and Open-Source.
ButtonDuino is USB Powered and Programmable! No need for those FTDI boards or addition IC's. USB programming and debugging are now integrated into the bootloader, this makes ButtonDuino cost effective, light and programmable anywhere!
No more messy wires to your breadboard like traditional Arduinos, ButtonDuino is breadboard compatible, so it plugs, with no pin conflict, directly into any standard pitch (2.54mm) breadboard as well as vero-board. This makes it cleaner and perfect for prototyping.
ButtonDuino is Stackable! Buttonduino can be stacked with any Buttonduino compatible ButtonShields (Coming Soon). Need more pins? No problem, Buttonduino can be expanded, via I2C or SPI. Need an SD card module or even wifi, then just stack it and program! Viola, no need to for hours of hardware debugging, Buttonduino gets you up and running in seconds