Vibration Motor & Additional Button

[FabriceVanner]

Dear Joey and Sensor-Watch Community,

I like your project a lot, thank you for the work you've done! Having some Java-knowledge and curiosity about C i'd like delving into your project soon enough. :)
I have 2 questions though, about hardware possibilities regarding the features i'd like to implement, i have very little circuit and watch knowledge :

• do you think there would be a possibility to add a mini vibration motor (like for a smartphone).

  • Is there some space left in the Casio F-91W or is there some alternative casing where you might think i would be able to fit one in with your board?
  • could it work regarding voltage and battery consumption?

• At this point I own a Casio B640WB-1BEF, and i appreciate having a 4 button-interface very much (actually i'm even missing a fifth sometimes since, i can not switch on the light and at the same time set the alarm, while in bed ;)

  • do you see a (possibly creative) way to add a 4 th button, and connecting it with the sensor-watchs interface?

Thank you!