2 layer board of 0.45x0.40 inches (11.40x10.16 mm). ATTiny85 Breakout v.9 Just a little board to work with the cheap SMD ATTiny 85. ATTiny 85: http://www.digikey.com/product-search/en?pv7=2&k=ATTINY85-20SU-ND&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25 You can use an Arduino as ISP: http://www.instructables.com/id/Program-an-ATtiny-with-Arduino/ NOTE: If you see the following it means you’ve programmed the ATtiny85 successfully: “avrdude: please define PAGEL and BS2 signals in the configuration file for part ATtiny85” It’s an error, but one you can ignore :)