Police Lights Themed LED Flasher Circuit | 555 Timer Project #13
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- เผยแพร่เมื่อ 29 ก.ย. 2024
- A tutorial on how to make a Police Lights themed LED Flashing/Blinking LED circuit using 555 timer IC and a few other electronics components. This circuits alternatively flashes between Red LED's and Blue LED's while blinking each of them individually similar to police strobe lights. Explanation of how this circuit works is also included in the video.
You can also club this circuit with police siren circuit, which is the next project in this 555 timer projects series. I add link to it as soon as I upload the video.
Link to the project page and circuit diagram: elonics.org/po...
Components Required
* 2 x 555 Timer ICs
* LED's: 3 x Red, 3 x Blue
* Resistors: 2 x 1M, 2 x 68R (Resistors for LED's)
* Capacitors: 1uF, 100nF
* Breadboard
* Few Breadboard Connectors
* (5-12)V Power Supply
Note: Depending on the power supply used and the way LEDs are connected (series or parallel) you need to use a different resistor than 68R used in series with the LED's. Refer to the table shown in the video tutorial above for resistor to be used for basic scenarios. You may also visit ledcalc.com/ to calculate the resistor based on LED arrangements.
This tutorial is a part of 18 video series on Electronic Projects created using IC 555: • 555 Timer Projects on ...
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I've used an electrolytic capacitor instead of the ceramic one. But it does not work correctly. Is ceramic capacitor mandatory?
Same here... One of the color doesn't blink as fast as the other.
This looks great, what do I have to change to supply from 12 vdc? The diagram say 5 -9 v
haha i used diff value of resistor, it work but slow
Thank you sir. We made this project and we also got the output.
it's astable or monostabel circuit...?
can you pass me the circuit please, I can't get the leds to light up
excuse me, can I ask but when I build it like you, the red LED flashed 4 time, the blue LED flashed 5 time, but when I measure with OSCILLOSCOPE it's the same frequency (5 time), so how can I make it the flashes with equal time, red 5, blue 5 ? thank you so much
Can I use a 470μF capacitor?
Please correct voice of pin 8 to +ve
Nice and simple
Very well explained
1.Instead of those LEDs and change to bigger clusters value of 360watts to 500watts?
2. Can there be 2 mode option like a steady mode no blink?
Nice circuit
Hello sir it works but both led's are on and off at same time...
So what's wrong with my connection.. Plz reply today
Great visualization of the circuit in action
I’ve built this circuit and find only one set of leds strobe within their on time, the rightmost ones ( red) do go on and off but do not strobe when on! Any thoughts?
exellent veri qood 👍👍👍🇦🇿🇦🇿🇦🇿🇦🇿🥰🥰🥰🥰
You say connect pin 1 to positive rail but show connecting pin 8 to +ve and pin 1 to -ve.
Hello can you help me i did the exact same circuit but lights are working and not blinking please help me
This is so hard for newbie 👎🏻
Use soldering to understand the joints
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Hi sir, this is awesome, if possible, can you do one with 12-14 Volt DC Input and 12 volt rated LED's?
I have performed the project on breadboard thanks for the amazing video.
But now further I have a problem, I have made the same circuit on a single sided PCB and I am unable to find where to *Locate Power Input Points* where is Vcc and GND on the PCB, can anyone please reply.
VCC goes to pins 8 and 4 of the NE555s. GND pin 1.
@@jaremaw2368 alright thank you very much. 🙏
Hello sir bicycle ka music horn repairing ka video banayiye
hello,how will be the circuit design if I match between this circuit and the circuit with speaker???
why in my circuit only one led is on and not alternately?
Do you have pcb circuit diagram of this?
can i use 3.7 volt 18650 Li ion battery for this ?
You need to find a low voltage version of 555 (they do exist).
Great project. Thanks!
Sir need simulation file of this tutorial
Never stop your work
Awesome!!
Peço a lista dos componentes
Possible 12 v supply
Sir need simulation file of this tutorial
2nd! haha... nice vid, thanks!
Nice circuit
Video perfeito.parabéns.
Cool circuit!!
Hi, I want to use 1 led, not 3. do i need to change a part?
no
1st Commenter
Welcome back
Hey bro, I made this circuit but one set of LED is blinking 3 times at once as shown in the video but the other set is continue glowing instead of blinking. But the interval occurs between two sets of LED, just one set is blinking while the other set is continuing.
So plz tell me what's wrong with my circuit??
Hello, try temporarily disconnecting the set of LED's blinking correctly and see if the other set blinks okay now. If the connected set of LED's blink as expected now, it means that there might be an issue with the way you connected the series resistor. You may recheck all the connections.
@@elonics Okkkk then, I will try this.🤝
@@Agent_Grignard did you figure out what it was, mine is the same.
One set of leds blinks three times, then the second set does a long flash then it all repeats.
The only thing I can see different between the wiring of the teo 555's and leds are the capacitor sizes. I have tried changing those for different value ones and that does affect the amount of time.the blinks happen for, however, I did use two electrolytic capacitors, but both of the correct rsting as oer the video as I don't have any ceramic ones
Thank you very much
I have the same problem. And after examining the circuit a bit. I think there is a flaw in the design. Depending on the current draw of the set of LED's that the anode is connected to the 100nF 555 side, the timing will change to constantly on, because the 100nf capacitor never has a chance to fully charged during the cycle. So lowering the current through the LED may do the trick. (but I want the LED to be bright. Or setup some transistor to take the load off)
Only blue leds are on and never switching to red leds
Same
Me too
Didn't get it 😒😏
Positive to negative how?
How did you attach their legs✈️
You could have at least made the flashing slower. People that are sensitive to flashing lights might suffer.