Tactile Metronome with vibration motor

We connected a simple vibration motor, like could be in your cellphone or pager, to our Tactile Metronome kit. This makes it a fully "tactile" metronome, since you can now feel the output beats without having to see or hear the metronome.

We connected the pulse output pin from the microcontroller through a 30 ohm resistor to the motor's positive lead. The motor's negative lead was connected directly to ground. We also added a protection diode across the motor's leads, "pointing up", so that it would only conduct the potentially dangerous inductive kick when we stop supplying the motor.

For more details, check out http://wayneandlayne.com/blog/2010/06/03/vibration-motor-interface-for-tactil...

Category:

Science & Technology

Tags:

• microcontrollers
• howto
• how-to
• diy
• electronics