I looked into my Devo8 again. For the vibration in the Devo7e PD2 is used. This pin is free in the Devo8, but there is no copper line from the cpu pin leading to anywhere you could solder a wire at... I soldered two wires at the pins 82 and 83 (PD2 and PD3) but there is only about 0.2 millimeter (0.01") between them. Was quite hard, even with equipment slightly better than standard...
Using PD2 might do things easier, but every other digital output port should do also. So I have found a row of five solder pads, labeled con5, left of the cpu. The pins are labeled VCC, GND, TMS, TCK and NRESET. The last three seems to belong to an unused debugging port. The last goes to a special pin (would not use this), but TMS and TCK go to gpio pins (PA13, PA14) so I see a good chance to use them as digital outputs and/or inputs.
I soldered some pins in so I can connect something.
I will make some testing with LEDs when I have time next week.
For use with a vibration motor: does anyone know what could be used (one of a mobile phone?) and how it should be connected (one to vcc, the other directly to cpu or a driver in between)?
