This year I decided to make my garage into a little haunted house. To add some fun and serious scary points, I wrote some code and hooked up one of my Tesla coils to a motion sensor through my Arduino. It now turns on whenever someone walks by, and it's actually very startling.

Step 1: Materials

For this, you will need the following things:
  • A Tesla coil - $20 - $50
  • An Arduino - $35
  • A Maxbotix sonar sensor - $25
  • One 12V to 120V relay - Free to $6
  • One transistor and a resistor to match the relay - Free from old electronics (See this Instrucable for more info.)
  • 12V Sealed lead acid battery - Don't you have one already?
  • Various wire
Overall, the total price comes out to about $100, but I had everything except for the sonar sensor.
<p>nice cat</p>
the black cat say its all mines (put in very deep an long purrrrrr here)
This is a great project to ste- <br>I mean, look into. Yeah, look into.
Couldn't you set the coil to always be on as long as it has power and then power it through one of those motion detecting security lights?<br />
Hmmmm...<br /><br />Wouldn't the arduino board be shocked?&nbsp; Perhaps putting it in a Faraday Cage would be a good idea...<br />
my coil only gives off about 1ft sparks<br />
Ah, so I'm guessing that you put the board more than 1ft away from the coil...&nbsp; That works!<br />
Nice Kitty! And nice project, a little odd for a haunted house, but cool anyway!
pssssttt enter this in the arduino contest
i have, it's pending approval...

About This Instructable


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Bio: Devin is a cool guy, eh doesnt kill himself while doing stupid things, and doesnt afraid of anything.
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