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  1. Halloween Props
    I have an idea for a safety coffin which is one of those graves with the bell on top in case someone is buried alive by mistake. I am thinking about how to make the bell ring. I know there are those with more electrical knowledge so I am looking for ideas. In general I came up with a couple of...
  2. Halloween Props
    Hello all, Ive built an Air Cannon using a CO2 Fire extinguisher and air/water solenoid valve to control the release of compressed air. Using an Arduino, I want to trigger the solenoid for maybe 1 second ON then 1 Second off, for 3 bursts, then wait for 5 Mins, then start all over again. I've...
  3. Halloween Props
    Can anyone direct me to a tutorial on a motion sensor air cannon. I can figure out how to build the cannon and probably hack a motion light for the sensor but how do I shorten the interval of the blast to just a couple of seconds Thanks Keith
  4. Halloween Props
    I just got a Chavet 1300 fog machine, and after testing it, I'm concerned. It puts out ALOT of fog which is great, but I'm running mine thru a cooler. I had thought that I'd run it on for 30 seconds, off for 10 seconds, or something like that. That would allow the cooler to lower the...
  5. Halloween Props
    I've just got a interval timer relay to use with a prop, but i have no idea how to use it (NOOOB!). This is the exact kit i have http://www.maplin.co.uk/Module.aspx?ModuleNo=25224&C=Froogle&U=25224&T=Module It is assembled and ready to go but i just can't get it to do anything. I think i need...
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