I am currently working on an electro-magnetic field (EMF) detector. I built the circuit from this diagram, **broken link removed** , and it works fine, but I would like to convert the tone signal (headphones) to a vibration. I figured I would switch the headphones with a vibrating motor, but I think I am not getting enough voltage across the vibrating motor. I've been experimenting with different setups in hopes of amplifying the voltage across the vibrator, but none have been successful. I don't have a lot of background with circuits so I don't understand exactly what is wrong or what would be a solution. If anyone could give me ideas, thoughts, and/or sites, anything will help.
Note: The vibrator that I purchased is a 3V DC micro-vibration motor.
Note: The vibrator that I purchased is a 3V DC micro-vibration motor.