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This instructable will show you how to make an awsome pressure switch alarm. I spent about 10$! warning it is loud
alarm.3g2215 KB
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Signing UpStep 1Getting the parts.
What you need for this project is:
1. soldering iron
2. solder
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
10. wire
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.
1. soldering iron
2. solder
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
10. wire
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.
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1
Dec 1, 2008. 2:28 PM
admin
says:
admin
says:
This is a great Instructable, but you need to add a main image of the final project to the intro step. Please do that and leave me a message when you have so that we can publish your work. Thanks!
Jan 8, 2009. 3:01 PMcoggie
says:
its cool but the diagram is a bit confussing!!!!!!!!
Reply
2
Jul 19, 2009. 11:01 PMgodfreyandthandi
says:
lolololol
Reply
18
Dec 11, 2008. 4:54 AMagis68
says:
Nice idea but please give us a pcb schedule or at least a very detail side of the circuit. Maybe its only me but I can't understand the circuit...Where u put the resistor? please help me
Reply
1
Dec 25, 2008. 8:15 PMBBru62 (author)
says:
you put the resistor on the positive end of the leds
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