What is the rough cost for building a mini air cannon? I'm debating on buying one, but if I can save enough money building it myself I will.
I like the design of this! Is there a benefit to using a sprinkler valve instead of a regular industrial air solenoid? Like is there more volume or anything like that?I built one last year. I believe it ended up costing well under $50.
It was hidden in a bush and activated by a motion sensor and timer relay. Scared the heck out of everyone!