mousa

This circuit can detect the live AC wire. Can run it by 3 to 9v. You can add a buzzer to circuit. NOTE: don't touch the wires of the circuits for good detection. You can make similar to this circuit using IC4017 or IC4060

This circuit is an AC voltage detector that don't need to contact with the electric wire. It can run with 6 to 12v. NOTE: don't touch the wires in the circuit for good detection. You can make similar to this circuit by IC 4017 .

This circuit is a randomly flasher that can use as Christmas tree flasher you can add many LEDs in each branch can run it by 5 to 12v according to number of LEDs in each branch. 390 ohm resistor used to LEDs protection. Parts list: IC 4060 LEDs Capacitor 10nF(0.01uF) Resistor 390ohm Resistor 100K Resistor 2.2M Potentiometer 1M  

This circuit is a flasher circuit for Christmas tree. you can add many LEDs in each branch. can run it by 5 to 12v according to number of LEDs in each branch. Parts list: IC 4060 LEDs(11pcs) Resistor 100K Resistor 10K Capacitor 1nF  

This is an amazing circuit that can turn ON-OFF a LED or other load by clap. It also can use as anti theft system because have high sensitivity.

This circuit is a Sound detector that run a LED when detect voice. can use as voice level detector or anti theft system. the circuit can run by 6 to 12v.    

This circuit is an audio VU meter. it run by 6v to 12v. the sensitivity can change by the potentiometer. you can add more LEDs by adding further IC.