I had to cheer myself up after spending ages looking at screw=20 dimensions, so whilst on Mouser I grabbed one of these: http://uk.mouser.com/ProductDetail/STMicroelectronics/STM32F4DISCOVERY/?qs= =3DsGAEpiMZZMvFPGEOwQcrY8eCSOyOXcPBXPB8snd5oaY%3d From ST, Cortex M4 1MB flash 192KB RAM, with 3 axis accelerometer, MEMS=20 digital microphone, audio DAC with class D driver,=20 programmable/debuggable via USB. Seems worth it for =A311. There's also a couple of cheaper ones at =A37.26= =20 and =A38.57. Thought it worth mentioning in case anyone else likes the look of it. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .