A multi-purpose surface mount protoboard from Dangerous Prototypes. Great for getting started with a new microcontroller. It has footprints for:32-80pin xQFP packages (TQFP, VQFP, LQFP, etc)SOIC(W) chips from .150″ to .3″ (max 32 pins)xSSOP chips (max 32 pins)Button with pull-up resistor input area (2x)LED with resistor output area (8x)SMD or through hole crystal with capacitorsSOT-23-3/5/6 (6x)0805 R and C (8x, plus extras near IC footprints)DO-323 (8x)24×10 pin through-hole prototype areaPower bus routed near all componentsSilk labels on top and bottomOpen source (CC-BY-SA)Don't know your size? See choosing a prototype board. DocumentationIf you encounter any problems when using this product, here is the forum from which you can get the technical support.