|OT: uWatch MK2|
Message #1 Posted by DaveJ on 17 Apr 2009, 5:15 a.m.
For those playing along at home, some preliminary uWatch MK2 specs that looks very do-able on the surface:
50mm x 40mm x 16mm
Fully enclosed case, no protrusions.
128 x 64 dot matrix display with white LED backlight:
Visible area is quite mall though, only 26mm x 16mm.
Watch band would have no attachment, i.e. velcro completely through holes in the case, nothing to break.
16 key tactile dome keypad minimum, probably 20.
Possibly a micro trackball and/or scroll switches (WOW factor).
Rechagable NiMH battery, life probably around several hundred hours continuous display.
USB interface allows comms and charging. Firmware upgrade via USB would be nice, but might be processor dependent.
Perhaps an IR LED, and another expansion port.
Processor choice is open, but more powerful than the PIC24F. Maybe 512K flash and 32KB or 64KB SRAM. 32bit ARM probably a good choice.
It could be made smaller with a different battery choice, but I'm thinking single AAA is cheap and simple.
Only custom bit would be the case, but I think that should be pretty simple.
Sound like a dream come true?, bad idea?, something else entirely?