The board alone is $16.66,which at today's rates equates to £13.80 which I think is quite good for a self contained USB enabled micro controller.
Although this was designed for wearable electronics it is so cheap and small that I can see it being used in all manner of other application.
One that immediately springs to mind is fitting them under rubbery surfaces to be used as drum pads, or embedding them in old or cheap keyboards to add USB or even MIDI control.
If this had been around 10 years ago I would have built one into my model of the Millennium Falcon to control the flashing lights etc. I can imagine using it as the payload in a rocket or model aircraft, micro drone control, Ohh I am starting to dribble at the ideas. I can even see me putting one on the cats collar, although I have no idea why, except that he is Persian and likes cool things too.
If Father Christmas reads then this then one of these in a cracker rather than some crappy plastic comb would go down really well.
|Microcontroller||Microchip PIC18F14K50 @ 12MHz|
|Bootload Driver||HID class, no driver needed|
|Serial Comm.||Built-in USB CDC Serial|
|General I/O||8 general I/O (6 can be used as analog input) + 4 high-current output|
|High-current||4 outputs with 500mA MOSFET sinks|
|PWM Support||Software PWM on 8 pins and hardware PWM on 1 pin|
|Push-button||1 general-purpose push-button with software reset feature|
|Program IDE||MPLAB X, cross-platform IDE with code completion, navigation etc.|
|Memory Size||16KB flash, 768B RAM, 256B EEPROM|
|Power Options||On-board 20mm coin or external li-po|
|Li-po Charger||Built-in (on li-po version)|
Full details and prices from http://rayshobby.net/?page_id=2686