tinyCopter Revision C Main Board
Changed to ITG-3200/ADXL345, There is a footprint for a HMC5883, but it is not populated. Also switched to a 32A4 for smaller size and added USB for updating firmware/debugging.
Just for a sense of scale, those cap screws are 2-56 and about 3/16 of an inch long.
More info at my blog: www.qwertyboydesign.wordpress.com