cell phones have this neat little 'buzzer' in them to alert you during meetings. It's a little motor with an excentric weight attached to them, when the motor spins the weight will cause the phone to vibrate
The favored method of IED detonation was just to have the attach a small spool of thread to the motor and have it pull a thread to activate something. Not sure what the favored method is now.
That was a pretty lucky guess then. I swear I never blew anything up, but I love to tinker with stuff. Hooking up a small relay to the motor outputs or using the motor directly seemed like the obvious thing to do.
The favored method of IED detonation was just to have the attach a small spool of thread to the motor and have it pull a thread to activate something. Not sure what the favored method is now.