LED Running Lights Circuits.pdf

Electronics Project Kits For Students Click HereELECTRONICS HUB P R O J E C T S | T U T O R I A L S  HOME » 555 TIMER » LED RUNNING LIGHTS CIRCUITS LED Running Lights Circuits JULY 28, 2017 BY ADMINISTRATOR — 3 COMMENTS Contents [hide] 1 Simple LED Running Light Circuit (Flashing LEDs) 1.1 Circuit Diagram 1.2 Components Required 1.3 Working of the Project 2 LED Chaser Circuit using CD4017 and 555 2.1 Circuit Diagram 2.2 Components Required 2.3 Working of the Project 3 Two Way Running LEDs with 11 LEDs, CD4017 and 555 Timer IC 3.1 Circuit Diagram 3.2 Components Required 3.3 Working of the Project 4 Circuit Diagram of LED Knight Rider Circuit Diagram: 4.1 Components Required for the Circuit: 4.2 Description: 5 Related Articles In this article, we will see different LED Running Lights Circuits, which are also called as LED Knight Rider Circuit. These circuits can be employed on a car, motor cycle, bike etc. as they will present an eye catching look to the viewers. We have created 4 different LED Running Lights Circuits using very simple components. In the first circuit, we have implemented a Flashing LEDs with the help of transistor based Astable Multivibrator. The second circuit is based on IC CD4017, where we have Chasing LEDs. In this, the LEDs simply turn on one after the other in a sequential fashion. The third circuit is also implemented using CD4017. In this circuit, the LEDs will glow in a different pattern i.e. two way running LEDs. In the final circuit, the LED initially travel in the one way and then travel in reverse direction. It components required and working in the following sections.means. we have designed a simple Flashing LED Circuit. We have used two sets of LEDs (3 on one side and 3 on the other) that will be turned on alternatively so that the outcome is a bright flashing LEDs. . This circuit can be utilized for the beautification of the car or it can be helpful at the time of crisis when your car broke down and you need help. Related Post: LED Christmas Lights Circuit Simple LED Running Light Circuit (Flashing LEDs) In this project. the pattern is same as a pendulum as it travels back and forth. We will see the details of each of these circuits like circuit diagram. . Circuit Diagram “ Components Required 2 x 2N2222A (NPN Transistor) 2 x 22µF – 50V Capacitor (Polarised) 2 x 46 KΩ Resistor (1/4 Watt) 6 x 8mm Bright White LED 12V Power Supply Connecting Wires Breadboard . Since the LEDs are connected in the path of the current. it builds up sufficient voltage (0. At this time. Now the capacitor C2 discharges and after complete discharge. components used and the working of this project . the capacitor C2 starts discharging through Q2. As the plate of the capacitor C2. Now. the transistor Q2 is OFF because of the discharging capacitor C1 (as the negative plate is connected to the base of Q2). Assuming Q1 is ON and Q2 is OFF. LED Chaser Circuit using CD4017 and 555 The second project in the LED Knight Rider Series is an LED Chaser circuit using CD4017 Decade Counter and 555 Timer IC. As this set of LEDs are connected in the current path. when the voltage reaches 0. they will be turned ON. As the capacitor charges.7V) to turn ON the transistor Q2. it is clear that the project is based on simple Astable or a Free Running Multivibrator. After the time constant C1R1. the Capacitor C2 will charge through series LEDs. From this point the process repeats as earlier. they will light up.7V. one transistor will be ON (in Saturation) and the other will be OFF (Cutoff). the capacitor C1 starts to charge from the corresponding series LEDs (through base of Q2). becomes negative. The charging direction is reverse. When switch on the circuit. it will turn ON the transistor Q1. which is connected to the base of the transistor Q1. the transistor Q1 is turned OFF and this set of LEDs are turned OFF. it will start charging through R2.Working of the Project From the circuit diagram. We will see the circuit diagram. As the charge builds up in the capacitor C2. During this time. the capacitor C1 is completely discharged and starts charging through R1. The frequency of the pulse can be controlled by adjusting the 100 KΩ POT. it generates a pulse whose frequency is determined by the components R1 (2. We will now see the working of this project. VR1 (100 KΩ) and C1 (1µF).Circuit Diagram Components Required 1 x CD4017 Decade Counter IC 1 x 555 Timer IC 1 x 18 KΩ Resistor (1/4 Watt) 1 x 2. for every clock pulse it receives at the Clock Input pin. each LED will be turned ON when the corresponding pin becomes . where the LEDs turn ON one after the other and give us the effect of one LED chasing the other. In this mode. we will get a count of 10 and since we connected the bright white LEDs to the output pins.1 nF Ceramic Disc Capacitor (100 pF code 101) 10 x 8mm Bright White LEDs Connecting Wires 5V Power Supply Breadboard Working of the Project In this project. This pulse is given to the CD4017 Decade Counter IC as its clock input. The 555 Timer IC in this project is configured as an Astable Multivibrator. the count in increased by 1 and as a result each output pin will be HIGH for every corresponding clock pulse. First 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.2 KΩ Resistor (1/4 Watt) 1 x 100 KΩ Potentiometer 1 x 1 µF – 50V Capacitor (Polarised) 1 x 0.2 KΩ). we have designed a simple LED Chaser Circuit. By understanding the working of CD4017. As it is a decade counter. R2 (18 KΩ). it was designed as a one way running LEDs circuit whereas in this circuit.HIGH. Two Way Running LEDs with 11 LEDs. Circuit Diagram Components Required 1 x CD4017 Decade Counter IC 1 x 555 Timer IC . the count is reset and will start from the beginning. After 10 clock pulses. the LEDs will be running in two ways. we get the feel and look a Chasing LED effect. If the LEDs were placed in a circular fashion. CD4017 and 555 Timer IC 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. Until this step.2 KΩ Resistor (1/4 Watt) 1 x 470 Ω Resistor (1/4 Watt) 1 x 100 KΩ Potentiometer 1 x 1 µF – 50V Capacitor (Polarised) 1 x 0. LED5 – LED7 (Q9). The connections continue as shown in the circuit diagram and this process continues till Q5. LED5 – LED7 (Q1). LED3 – LED9 (Q7). will light up next. The final effect will be a Two Way Running LEDs and the sequence will be as follows: LED6 (Q0). 1 x 18 KΩ Resistor (1/4 Watt) 1 x 2. which is connected to the Q0 of the CD4017 will light up first. LED4 – LED8 (Q8). We will see the working of this project now. LED4 – LED8 (Q2). The LED6. Q7 is connected to LED3 and LED9 and so on. which is connected to LED1 and LED11. Q6 is connected to LED2 and LED10. The 555 Timer part (the operation is similar to the one explained in the above circuit) generates a pulse signal. LED3 – LED9 (Q3). Circuit Diagram of LED Knight Rider Circuit Diagram: LED Running Lights – LED Knight Rider Circuit Diagram Components Required for the Circuit: . LED2 – LED10 (Q4).1 nF Ceramic Disc Capacitor (100 pF code 101) 8 x 1N4007 PN Junction Diodes 11 x 8mm Bright White LEDs Connecting Wires 12V Power Supply Breadboard Working of the Project 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. which are connected to Q1 of CD4017. one way lighting of the LED will be completed. The LED5 and LED7. LED1 – LED11(Q5) for one way and followed by LED2 – LED10 (Q6). which is given to the CD4017 Counter as the clock input. In order to achieve the two way lighting up of the LED. Carryout Pin (Pin 12) – With the help of this pin one or more than one IC CD4017 can be linked. Like pin 3 will give you output for the first pulse and so on. Output Pin (Pin Q0 – Q9) – In the sequential manner the output is received from these pins. Suppose you desire to attach one more CD4017 then attach pin 12 with input clock of its . 4. 3. Pin 13 should reach the highest state if you wish to switch off the counter. C1 (. IC NE555 – 1 CD4017 – 2 Resistor R1 (1K) – 1 R2 (100K) – 1 R3 (10K) – 1 VR1 (100K) – 1 C2. 2. Clock Inhibit Pin (Pin 13) – This pin is used to change the state of the counter from ON to OFF and vice versa. implies that the count will not go forward. So after each third output the counting automatically begins with zero. Suppose you wish that the counter starts counting from the third pin then you need to attached fourth output with 15 pin. After 10 clock pulse it will once more begins from Q0 output. Input Pin: Reset Pin (Pin 15) – The counter is reset to zero by this pin. As shown below pin diagram of IC CD4017.1uf) – 2 D1-D9 (1N4148) – 9 Transistor (BC547) – 1 LED1-LED9 – 9 Description: In order to get familiar with the working layout of the circuit it is important to get familiar with individual pin. This IC has 16 pins out of which 3 are input pin. Clock Pin (Pin 14) – The output will be provided each time the pin 14 of the IC move to high. 10 is for output purpose and for ground one pin is assigned and one power supply and rest one left is for Carry out. Pin 13 in our circuit is grounded. Like for the initial pulse of the clock pin 3 will give you output likewise for the next clock pulse arrive the output will be provided by pin2 and so on. Ground Pin (Pin 8) and Supply Pin (Pin 16) – For the working of the IC pin 8 provide ground while power supply is provided by pin16. 1. If it is at high state then it will not pay attention on the clock pulse no issues that you press the switch how many of times. counting of IC3 disabled. IC CD4017 is used as a CMOS counter/driver. used to produce a clock pulse for the circuit. It is well known IC and it is very much useful in various other projects viz Light Chaser. In this circuit IC 555 timer is used like an astable oscillator. 555 timer oscillation frequency can be calculated by- f=1.descendant. Like at the primary stage output Q0 will receive at pin 3 and LED1 will blink and LED2 will glow from pin4 and so on. IC2 in the circuit done the counting 0 to 9 while with the help of diodes the rest of the counting will done by IC3. . Pin 14 disregard the clock pulse if pin13 is at high which implies IC3 stop counting. Every time when it gets to clock pulse . The clock pulse will be disregarded from pin 14 if the pin is at high and the counting stop by IC2. And in return of these IC3 pin 15 became low because earlier transistor BC547 is a high state. which in turn give clock pulse for the IC2 working.e ninth output it will create it temporary high. And this will once more given to reset pin 15 of IC2 and counting is now begin by IC2. Matrix Die. In the instance when 555 timer gets the power supply. 44/(R1+2* (VR1) *C1) In this circuit. the counting will start from 0 till 16 since we have employed two decade counters. The carry pin of primary CD4017 is coupled with the second clock input similarly the second carry pin is coupled with the third clock input and so on. which is coupled to pin 13 (clock inhibit). By the help of VR1 the speed of oscillation can be alter. pin 3 of IC1 output is given to CD4017 pin 14 of decade count. When the counter arrives at the pin 11 i. CD4017 begins its counter value from zero (since it has inbuilt counter) after getting the clock input. When it arrives at Q8 which is pin 9 which is yet again connected with pin13 of IC3 due to stop counting of IC3 irrespective of the input signal. NE555 and CD4017 are the two IC on which the circuit is based along with some other components. It also means that when the output counting is done by IC2 from IC3 is stop similarly IC2 stop when IC3 counts. IC NE555 in this circuit is used as an astable mode . Hence output signals approaching from IC3 are transmitted in reverse direction to IC2. And after pin 14 moves to high it forwarded one by one to every pin. This is used to give an oscillating wave to pin 3 of the IC1 which is for output. And pin15 of IC3 reset to low state due to this low signal for a short moment and the output of IC3 stats counter from Q0 (pin3) and move forward one by one. it fetches the clock pulse through clock input and all 10 outputs turn on in sequence. You can see this in circuit diagram. 2015 AT 3:11 AM i want 555 timer project Reply sahith sankalapa says FEBRUARY 5. ELECTRONICS. 2016 AT 10:27 PM thnk you ! Reply .Related Articles Police Lights using 555 PWM LED Dimmer Screaming Siren Bike Turning Signal Timer Using NE555 Circuit Circuit Dummy Alarm Circuit Frequency Counter Reverse Parking Simple LED Blinking Circuit Sensor Circuit Circuits FILED UNDER: 555 TIMER. FREE PROJECT CIRCUITS. 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