This instructable will show you how to make an awsome pressure switch alarm. I spent about 10$! warning it is loud
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Step 1: Getting the Parts.
What you need for this project is:
1. soldering iron
3. soldering skills
4. 12v siren
5. 9v battery clip
6. 150 ohm resistor resistor ,color(brown,green,brown,gold)
7. 3 pin pressure switch
8. on/off switch
9. 9v battery
11. 12v DC relay (I got mine from an old Phillips computer monitor)
12. The moment of truth lie detector (Don't worry its fake).
13. a box to put it in.
Step 2: Hack the Lie Detector
First you need to take apart the "Fake" lie detector.
look at picture for detales.
Step 3: Connect It All
see pictuers for details.
Step 4: Finished Product
sorry this is mt first instructable