Great Running Led Circuit Using 555

By adjusting the 10k preset the pulse of oscillation of 555 timer ic can be adjusted and according to pulse rate at pin no 3 the blinking or running effect of leds controlled.

Running led circuit using 555. When the clock pulse produced by the 555 timer is fed to the 4017 it starts counting in the upward direction for each pulse. The leds can also be used with oter colors. When the output voltage is high anode controlled leds will turn on and cathode controlled.

The circuit is quite simple to fabricate with a low budget. The speed of running can be controlled using the preset rv1. Push the leads through the holes and bend them slightly on the other side to prevent them from falling out.

Both the capacitor and the led have one long lead and one short lead. The top left pin with the circle next to it is pin one on the 555 timer. In this running led circuit the leds turn on and off in a steady progression one by one or in a sequential fashion.

Creating flashing and fading led effects using ic 555 circuit the first figure shows the basic configuration associated with 555 ics here it is connected as an astable multivibrator. Similarly in cathode controlled leds anode is connected to vcc. Running led led chaser or sequencer using 555 4017 video details in the i have shared all the details required to make this project.

The ic 555 timer generates an astable multivibrator or low frequency oscillator. Only difference is in the mode of connection of leds to the output pin pin 3 of 555. All the mentioned components are easily accessible in the market.

For making the led chaser you require 555 timer 4017 counter. An led flasher circuit is a circuit which flashes the led meaning turns it on off on off on off. But in this circuit we are using a series of leds.