If you search for LED chaser circuits online, almost all of them show one single LED lighting up and moving across a line. That classic effect looks fine but if you flip the logic around, then you get something way more interesting, which is a running dark dot chaser effect. Instead of one glowing light […]
Lamps and Lights
16 LED Reverse/Forward Chaser Circuit
In the following LED chaser circuit concept, I will explain how the circuit sequentially turns on and off 16 LEDs using a 24 pin decoder IC 4514. A four-bit binary input is used by the CMOS 4514 binary-to-decimal decoder, IC3, to go forward and activate each of the 16 outputs. How the Circuit Works The […]
LED Chaser Circuits using IC 74C164 and 74LS164
In this post I will explain two different LED sequencer circuit designs, one using the IC 74C164 and the other using IC 74LS164. Even though both these ICs share the exact same logical function, meaning both are 8-bit Serial-In Parallel-Out (SIPO) shift registers with identical pinout configuration, but yet they belong to completely different integrated […]
LED Chaser Circuit with Slow Adjustable Fading Effect
The next circuit below discusses a cool chasing LED light circuit that features a timed delay fading slow transition effect across the whole illuminated sequencing LEDs. The idea was requested by Mr. Tamam. Technical Specifications I want to design a circuit consisting equal no. of Red, Green, Blue, Yellow, Violet, Orange and White LEDs. I […]
Make this Knight Rider type LED Chaser Effect
The below explained concept is basically a LED running light effect generator circuit, quite resembling the effect produced over the popular “knight rider” car. Circuit Diagram The circuit mainly comprises of IC 555 and the IC 4017 for implementing the required functions. The IC 555 is used to generate the clock pulses which is fed […]
Outward Chasing LED Circuit: LED Chasing from Center to Outward
If you wish to make a sequencing LED pattern which will imitate LED chasing from center to outward, then you can try the following design, which is our 9th design. Here, group of 5 LEDs will appear running from pin#3 towards pin#10, giving an impression that the LEDs are chasing from center pin#3 to pin#10, […]