What this project does?
Detects the stray electrostatic voltages using a 555 timer IC. The IC is used in a monostable mode and detects small charges present on your finger. Thus the led turns on when a touch is detected on the metal plate.
Materials Required:
1. 10uF capacitor
2. 10 nf capacitor
3. Jumpers
4. 6V source
5. 100kΩ resistor and 330 Ω resistor
6. Breadboard
7. 555 timer IC
8. 1 LED (Red or Green should be cool enough!)
9.
Procedure:
Hardware part:
1. Make the connections as shown:
How this works:
It will detect the electrostatic buildup in a room. Your fingers or skin may have some charges.(Similar to the ones found on the comb when you rub a comb or scale on your hair and it attracts bits of paper). The pin 2 has the metal plate connected to a plate which is very much sensitive to electrostatic charges on the skin.
When the pin 2 is at a lower voltage, it triggers the circuit. If it doesn't change, you gotta touch the plate and the 0V rail.
When the pin 2 is at a lower voltage, it triggers the circuit. If it doesn't change, you gotta touch the plate and the 0V rail.
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