End-Around Pneumatic Cannon

 by matthewbeckler

Step 7: Firing Circuit

cannon_firing_circuit.png
The solenoid valve says it requires 24 volts to open, if I remember correctly. Three 9v batteries in series will definitely open the valve. Connect them i series with a switch as shown in the image below.

Some people like to have a rocker switch as a safety, and then use a pushbutton switch for firing. What you do is up to you.
 
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Pizzapie500 says: Nov 27, 2010. 11:25 AM
What if your solenoid runs on AC?
jj.inc in reply to Pizzapie500Feb 14, 2011. 6:57 PM
It should still work, just fine, I can imagine how it could anyway. Hook it to a 9v battery and see what it does. (It can't hurt it)
Pizzapie500 in reply to jj.incFeb 15, 2011. 1:09 PM
Dang it! The solenoid blew up! JK! Yeah it works, it makes that clicky noise.
jj.inc in reply to Pizzapie500Feb 16, 2011. 4:36 PM
Good, you actually got me there. Yea, do you have a sprinkler system that uses these which plugs into your outdoor AC, if so then that control box actually adapts the power to lower voltage DC. That may lead to the belief that it is an AC valve, or I don't know what I'm talking about.
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