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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Step 1: Schematic Diagram and Needed Items

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

Step 2: Needed Tools

Needed tools

Iron Soldering
Third Hand Soldering Solder Iron Stand
Wire Stripper

Step 3: Solder the Copper Coins and Create the Circuit

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

Step 4: Last Steps

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