Touch Switch With Lm555

The Touch Switch circuit will detect stray voltages produced by mains voltages and electrostatic build-up in a room. Two touch plates are provided and the resistance of your finger changes the voltage on pin 2 or 6 to toggle the 555.

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Needed items

• 2x Resistors = 3.3 MOhm
• 1x Resistors = 330-470 Ohm
• 1x Capacitor = 10 nF
• 4x Cooper Coins for touch plate
• 1x Led
• LM555
• 1x BreadBoard
• 1x Some wires
• Power Supply +12Volt

Needed tools

• Iron Soldering
• Third Hand Soldering Solder Iron Stand
• Wire Stripper

Solder the four copper coins for using touch plate and create the circuit as you see in schematic diagram.

We place the copper coins in the circuit. Feed the circuit with 12 volts and finaly Touch the coins for on-off the LED.

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