Comment Smoke machine sensor (Score 2, Interesting) 306
I bought a cheap smoke machine for $15. It comes with a switch on 6 Ft of cable. Press the button, you get smoke. So fine if your going to sit beside it all night but a not very useful otherwise. You can get a timer for $25, It will trun the smoke machine on and off for a set time ever so often.
But I came up with a much better idea. A montion sensor switch to trigger the smoke machine when someone approches.
I picked a "tomb stone" for $6 that has has a montion sensor. When the sensor is tripped it makes a sreaming noise and flashes some LED's. Open it up and disconnect the LED's, wire in a 5v reed relay, from Radio shack, in place of the LED's. Then wire the relay to the switch that came with the smoke machine (or use a separate cable).
Now when the sensor is activated the screams come on for 3 or 4 seconds and a the same time the smoke is on. Great to put just out side your door.
But I came up with a much better idea. A montion sensor switch to trigger the smoke machine when someone approches.
I picked a "tomb stone" for $6 that has has a montion sensor. When the sensor is tripped it makes a sreaming noise and flashes some LED's. Open it up and disconnect the LED's, wire in a 5v reed relay, from Radio shack, in place of the LED's. Then wire the relay to the switch that came with the smoke machine (or use a separate cable).
Now when the sensor is activated the screams come on for 3 or 4 seconds and a the same time the smoke is on. Great to put just out side your door.
