![]() The LED6, which is connected to the Q0 of the CD4017 will light up first. The 555 Timer part (the operation is similar to the one explained in the above circuit) generates a pulse signal, which is given to the CD4017 Counter as the clock input. We will see the working of this project now. The working of the Two Way Running LEDs project is similar to that of the LED Chaser Circuit except that the orientation of the LEDs is different. This is another running LED circuit but the difference between this and the previous Running LEDs circuit and this circuit is that in the previous circuit, it was designed as a one way running LEDs circuit whereas in this circuit, the LEDs will be running in two ways. Two Way Running LEDs with 11 LEDs, CD4017 and 555 Timer IC If the LEDs were placed in a circular fashion, we get the feel and look a Chasing LED effect. By understanding the working of CD4017, for every clock pulse it receives at the Clock Input pin, the count in increased by 1 and as a result each output pin will be HIGH for every corresponding clock pulse.Īs it is a decade counter, we will get a count of 10 and since we connected the bright white LEDs to the output pins, each LED will be turned ON when the corresponding pin becomes HIGH.Īfter 10 clock pulses, the count is reset and will start from the beginning. This pulse is given to the CD4017 Decade Counter IC as its clock input. The frequency of the pulse can be controlled by adjusting the 100 KΩ POT. In this mode, it generates a pulse whose frequency is determined by the components R1 (2.2 KΩ), R2 (18 KΩ), VR1 (100 KΩ) and C1 (1♟). The 555 Timer IC in this project is configured as an Astable Multivibrator. ![]() We will now see the working of this project.įirst thing we notice in the circuit diagram is that there are two parts in the circuit: the 555 Timer part and the CD4017 Decade Counter IC part with LEDs. In this project, we have designed a simple LED Chaser Circuit, where the LEDs turn ON one after the other and give us the effect of one LED chasing the other.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |