Intermittent on / off pulse from fraction of second to seconds using potentiometer.
Budget: $250 – $750 USD
Design and create a circuit board using 555 timer, or something along this line
http://www.falstad.com/circuit/e-vco.html
Encase circuitry (possibly with 3D printer)
control frequency using a small potentiometer.
Circuitry is designed to wear on body and is light and portable
System runs on two AA batteries.
Fixed price of $300
http://www.falstad.com/circuit/e-vco.html
Encase circuitry (possibly with 3D printer)
control frequency using a small potentiometer.
Circuitry is designed to wear on body and is light and portable
System runs on two AA batteries.
Fixed price of $300