Just a quick compilation of a circuit I built to open and close these valves at specific frequencies. I’m just pleased with the noise it makes… The green LED indicates which valve is on (runs two valves, with one being open and one being closed at any one point) while the red LED just indicates that the circuit is on. Only one valve was hooked up and running with compressed air. The frequencies listed are approximations based on calculations. The actual frequencies may be different by 10Hz or so.
Post time: Sep-26-2017