Running Led Circuit Using 555. The 4017 is constructed in a astable configuration. When the clock pulse produced by the 555 timer is fed to the 4017 it starts counting in the upward direction for each pulse.
When the clock pulse produced by the 555 timer is fed to the 4017 it starts counting in the upward direction for each pulse. Running led led chaser or sequencer using 555 4017 video details in the i have shared all the details required to make this project. All the mentioned components are easily accessible in the market.
For making the led chaser you require 555 timer 4017 counter.
The high output level of the 555 timer is 1 7 volts less than the supply voltage. A single led is placed in series with the base of the pnp transistor so that the lower 20 leds turn off when the 555 output goes high during the t1 time interval. For making the led chaser you require 555 timer 4017 counter. The 4017 is constructed in a astable configuration.
