english is not my mother tongue. so please understand some of my gramatic mistake.;
Anyway, let's get this started!
This is a portable lie-detector built in Altiod tin. maybe you could have some fun useing this thing.
note: this detector is less sensitive then a real one. this could be miss some (many) of the lies.
Step 1: Things you'll need.
1. circuit board
2. 10K& resister
3. 47K& resister
4. 470& resister
5. 1M& resister x2
6. 47K& VR
7. knob for VR
8. 2N3904 transistor x3
9. 0.1 ? mylar cap
10. slide switch.
11. 9V bettery snap
12. LED (one red, one green)
13. solding tools.
15. basic tools,
17. aluminum foil
....and most of all, Altoid tin!
Step 2: Make a finger pads
And don' forget to stick a wire between the valcro and thw foil!
Step 3: Solding the circuit
suitable size to fit in the Altoid tin
Step 4: Drilling the Altoid tin
and DO NOT use a sharp-end drill bit. it will tear the tin into half.
Step 5: Put the floor sheet
and secure is with a glue.
in my case, I used a piece of box, and secure with a hotmelt.
Step 6: Put everything in order.
Step 7: Done.
then, slowly, turn the VR until the 'true' LED is light, and the 'false' LED is dark.
then, ask a question to the suspect , when the false LED get light, the suspect is lying.