Hardware spec

[mikerr]

CPU
PIC18(L)F25K50
Flash: 32K
SRAM: 2K

http://ww1.microchip.com/downloads/en/D ... 00684B.pdf

Physical dimensions:

Width: 37 mm
Height: 48 mm
Depth: 11 mm

Weight: 7.5g

Power requirements

Power Input:
Micro USB socket
3v CR2032 Battery
3v (Vcc) on header

Current Usage:

Standby : 15uA
Active : 2mA
Max : 20mA (All LEDs on)

Inputs & Outputs
2x microswitches "A & B"
4x GPIO
5x5 LED array
I2C on header
USB (tether)

(please post any corrections & additions)

[mikerr]

Ah, they do have a datasheet now:
http://www.codebug.co.uk/whatiscodebug/
http://www.codebug.co.uk/assets/extras/ ... asheet.pdf

tidbit:

I/O Sink/Source: 25mA

[pigraham]

Teaser in the datasheet:

Fitting expansions The expansion port provides I2C, SPI and UART connectivity to possible add­ons. Add­on  modules (called Tails) are available to extend CodeBug™’s capabilities. To fit an optional  add on module (available separately), gently slide the expansion pins into the expansion  port, making sure the pin labels match up.    

[BMS Doug]

Header connections (from I2C tutorial)