This circuit uses the 555 IC and 4017 IC to flash the LED's one by one placed in shape of a Heart shaped , hence named LED flasher circ...

This is a game for two players. Player 1 presses the START button. This resets the 4026 counter chip and starts the 555 oscillator. The 55...

The Electronic Cricket Match game is presented below, the circuit has 8 LED which represent  various states in a cricket game - 2 runs ,si...

This simple 555 IC testing-circuit tests your entire 555 timer IC, so before using your IC check immediately that your IC is good or bad b...

The circuit below is darkness detector that is it automatically turns on the LED when LDR senses no light. LDR is the light dependent resi...

Infrared LEDs are just like ordinary LEDs but the light output cannot be seen. To view an infrared LEDs, turn it on with the appropriate ba...

This circuit produces a weird "Laser Ray" sound and flashes a  LED at approx 5Hz.  COMPONENTS USED: 1.one 555 IC 2.one 1...

This circuit does not turn on for XX seconds after power is applied. Adjustable from 1 second to 2 minutes.The delay can be adjusted by cha...

This circuit will toggle the output each time the switch is pressed. The action cannot be repeated until the 10u charges or discharges via ...

This circuit makes a LED fade on and off.  first charges a 100u and the transistor amplifies the current entering the 100u and delivers 10...

The 555 operates at 2Hz. Output pin 3 drives the circuit with a positive then zero voltage. The other end of the circuit is connected to a ...

Here's a clever circuit using two 555's to produce a set of traffic lights for a model layout.  The red LED has an equal on-off per...