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Alternating led flasher with 555 ic
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- เผยแพร่เมื่อ 1 มิ.ย. 2013
- Dual alternate led flasher using 555 timer chip
This circuit uses the 555's astable operating mode meaning that the circuit has no stable state hence 'astable'. The output continually switches state between hight and low.
Blessings, i almost gave up. I have 50, ne555p ic's. I have been trying to get anything to work. Tried just about all the tutorials on youtube. The road has been long and tiresome. Today i drove to another state to aquire 4 different brand 555 ic's only to get there and be told that only 2 were available. And to make matters worse they were not even true 555 ic's but nte955m. I was told that they are just as good. I bought them reluctantly and drove home. Tired the first tutorial from yourtube l and nothing... came across this tutorial and book. The lights blinked..😲. They are blinking fast and i increase the capacitor and still blinking fast. Im happy that i atleast got it this far. Thank u again!
Thanks for showing us how to do this. When I finally got it going (after changing a few leads that I put in wrong) it was such a pleasure to see it work so nice!!!I'm going to let it run all night just so I can look at it.Thanks again.
Best ever surcuit.I tried other veideoes but it did not work your video is real and understanding √√√...thanks.
Thank you. You helped me out of a pickle. My breadboard was naf. Tossed it and soldered circuit spider fashion. Worked first time. Many thanks.
Thanks Protronics for sharing this circuit. It helped me big time with my Finals Semester Project for my FMT 105 class at SJCC.
Hi thanks for taking interest in this video. If you were looking to add a pot to adjust the flashing rate you would connect it between pin 6 and 7. Hope this helps!
Protronics99 Is there a link to the diagram?
I tried changing the capacitors and that too worked well. Small the capacitor, faster the blink rate. Thanks.
Thank you so much, I have followed your instructions and it works. Please make more breadboard projects when you have time, like a phone detector, etc.
Thank you for the video. I was trying to figure out how to get my lights on my drone to flash like cop lights. This worked perfectly.
itd be cool to add a potentiometer to connect pins 7 and 8. adjustable blinky
dude, thank you so much, finally a vid which DID work for me thanks bro!
I need circuit diagram of this bro please
Great video...Great Instructions... Great Engineer!
This is awesome, just what i needed
Great job Sir Appreciated..........👍
thank you brother, he liked it very much
Great video !
How could I modify this to work with 12V DC power to alternately flash two 2057 auto bulbs (26 watt, 2.1 amp draw) in a DIY RR crossing signal?
Tried it. Works great. Thanks a lot Sir.
I don't know why, but I can't stop dancing!
An amazing project. Thanx bro
thank you mate finally I did it
thank you
Thanks a lot!!
Great video
How can I make the red and blue led blink the same amount of time, when you changed the resistor that connects pin 7 and 8 you can see how the blue led stays on longer than the red does
c00L. I got it to work with a couple AA batts in series
Tried 20 times, and doesn't work for me !
Hello there.
Lovely video you done here.
This type of video help would be even better with a clear simple circuit coloured drawing of the wire and parts and how they and where they connect to each other and the + and - shown?
This is just the type of flashing led set up I've been looking for to help me out of a problem of getting leds to flash on for 1 second then turn of for 2 seconds?
I need this type of flash rate for the 2nd set of led lights on the amt/ert star trek ship enterprise models I am building!
Their navigation leds have to flash for 1 second then turn off for 2 seconds then back on for 1 second and like that onwards?
I can do the other running strobe 4 leds that the ship has which flash 1st a second already with a simple flashing led set up.
But here's the thing on you set up here you got 2 leds flashing like I need but How do I do a set of 9 leds to flash together on for 1 second and off for 2 seconds onwards like that?
Please can you send me a simple clear drawn out drawing of the circuit layout for 9 leds that will flash on for 1 second then off for 2 seconds onwards? The power needed and the right circuit parts needed?
So all the values clearly written down for the circuit to work like that?
Thank you so much in advance from a non-electronics models builder.
thank you. works fine.
Hello,
How are you doing today?
To answer my own question, I just finished building that circuit today.
I am assuming, when circuit is applied power it comes on (high); green light, thus it switches off (low); red light.
After doing some homework, I added a 0.001uF, 500V ceramic disc capacitor to pin 5 of the IC 555.
I will now do the calculations to determine the time interval each light is off or no.
Let me know.
I look forward to hearing from you...
And when i made it the blue LED blinks except the Red LED?
my 100uF Cap only made the blue LED light up not even blink. Now I use a 10uF Cap and the duty cycle is not even. The blue LED is on for a short time and off for a ling time and the red LED is on for a long time and off for a short time. Any ideas?
trevortjes Didn't notice your blinker also alternates without a duty cycle of 50%. Guess I have to find the right cap
The 10 k resistor should be connected between the 100 uF capacitor and the 555 output (Pin 3) to give 50% duty cycle and reduce the current consumption by 4.5 mA (as the 1k resistor is pulled to ground by the discharge pin for 50% of the time).
I have the same exact breadboard!
Very nice !!!
THANK YOU SO MUCH!!
Nice, But I would have liked it if you had a written schematic. I will still build this.
how would we control the pulse speed and or make it into a three phase distributor so 3 leds flash in a rotation and control the speed from around 100 to 500 pulses a minute
cool vid. if you wanted to connect a pot to adjust the flashing rate, where would you connect the leads
could you plzzz add a description link for this project with circuit diagram?? plzzzz
it works .. but could u tell me the mechanism of the circuit or how is it works ? simply plz ..
hi.....
i see your projects it's really good.. in this project "alternating led flasher "you use only two leds but i want to connect more leds because in this project connect to two names (RAVI and ram) so you can help me plz....
thanks simple ,works
Thank you!
hi I just want to ask what may be the problem if the ic 555 only heats up and neither of the leds are lighted? thanks
i think this is not gonna work! b'cz the pin 3 of the 555 ic will send a logic high or a logic low only any one at a time. Therefore whenever the output will be high, the pin 3 will light up both the led(s) simultaneously, as they are both connected in parallel with the output, voltage & current will go to both led(s) together.
nice job man keep up the good work.
I wonder why the red LED is weakly shinging while the blue one is bright enough?!
the internal resistance of the blue led might be lower than the red one this can be easily fixed by adjusting the resistor values connected to each
Can you help me about the logic circuit and truth table of this.. TY
BASICALLY YOU ARE USING SINKING AND SOURCING CAPABILITIES OF THE 555
yes
Steve reisch clapping music sample in background music
Sir it is not flashing what shall I do
same here..both leds are lit at the same time without blinking alternately..frustrating af
He explained it wrong. When he says cathode, it should be anode, and vice versa
Can a power supply of 12 or 15 volts be used rather then the 9 volt battery?
please can you upload the circuit diagram for this project as possible as you can ..
I need it so much
LEDs are both on but not flashing. Why?
it works could you add more leds?
how to adjust the flashing more or less faster....
+Owens Rayfeilds Change the value of the capacitor. When is smaller, it goes faster
+Owens Rayfeilds Change the value of the capacitor. When is smaller, it goes faster
+Wady Tupiza Thanks for the note... it finally solved my problem
you can also change the value of the resistor, but it would use more wasted power into warming the resistor
Works, what would this circuit be used for, except flashing lights?
i did exactly the same on the video and it runs ok but if i have both led connected one of them does not completely turn off when blinking, just bright less when the other one turns on. what could be my problem?
if i disconnect the other one, the one that bright less starts working fine, turning on an off completely
how to increase the on time of an led using resistor?
can i see the schematic diagram of this? Thank you very much
Cool 555 circuit! Where did you get the music?
I am using 2 LED (5+4 KOhm) since I didn't have a 10 K one. The LED's are flashing together very fast. Your video shows they are alternately lighting,
Any advice will be appreciated.
Thanks.
GKP
Change capacitor to a bigger capacitor :)
Thanks It is awesome thats a like from me! ;)
can a solar cell be used in place of the battery?
مال مدرسه الشعله لايك يا كبتن 😂😂😂
محمد صالح 😂😂😂😂
mohammad alhamed يب ف كل مكان
thank you, finally it works! Even if I tried it with 12V and different values, it's easy and a perfect explanation :)
How to connect a sequence of flashing led? like the one you find on the higway..
Mine lights up but doesn't flash, why is this so.
mine came out weird?! only one led would light up and if i turn off power and turn it back on it would randomly change to the other led one time. i put a much smaller capacitor in it and a potentiometer in place of the 10k and not it switched the led depending on the resistor value. above about 7k its one led and below its the other. what is going on? i didnt even know that was possible without a microcontroller
Not sure what your problem is would need to see a schematic of your circuit to be sure but check all your connections according to the video and how you wired the pot. Thanks
i kinda fixed it and forgot where the connections were. oh well
Nice Thank You :D
Would you please upload circuit diagram
Better color coding for wire would be better
One led is blinking and the other is not blinking what is the reason
It finally worked :) . But, how could i possibly increase the brightness of the bulb, because one of them seems a bit dimmer than the other.
+Mad Axe the dimmer use Resistor 330 Ohm, while the brighter use 220 Ohm. if you wanna get the equal Brightness change to the same resistor number
+Teh Chayaphon thanks for the tip
Vos leds sont-elles les mêmes = même origine ?
Nice project. How many LED can I connect to this circuit? TIA! :)
INFINITE, BUT THEY WILL FLASH IN THE SAME ALTERNATING SEQUENCE
How do I know, when the circuit is off or on???
Any body say how to make a dancing light using 9v battery and switches
good music
i want the circuit diagram for this plx plx plz..urgent
Can anyone help me my two led all lights up not blinking
Why does my led gets too hot
My one led glows longer than the second led. How to make the glow for the same time?
Apoorva Kirti connect both leds to same terminal of 555 timer. hav a look at my channel. i hav made this circuit on breadboard with schematic diagram. if u like it please subscribe
Thanks.I changed the values to get 50% duty cycle.
is there a circuit diagram for this?
What is the fault in the circuit
if one is blinking and other is not blinking
you probably have the led that isnt blinking in the wrong polarity. one led has its cathode connected to pin 3 of the 555 and the other led has its anode connected to pin 3
please can you give me the circuit file pecause this way it very hard
I want circuit diagram
Can anyone help me? ive followed all instructions and my LED's aren't flashing
Non ! Ce n'est pas possible il faut revoir le circuit et la valeur des composant mais le 555 est peut-être défectueux
What is that music?
If you read the description, you would know that it is "Clappy" by Rob Simonsen
@MyCousinV1nny You don't have to be that way... :/
Where this circuit application?
ic này ở đâu có z bác chỉ vs
voltage of the resistors please..??
Do this can do with 100khz
can u share that audio
What you need is a circuit diagram.............
why my led are not blinking? btw im using 1microF
Le condensateur prévu dans la vidéo est de 100 et non de 1
Circuit diagram please
I want to make 10 led like that for diwali. by only blue and red.
need circuit diagram
oops, I fried my 555. It would be nice if you had of all the words you have on screen in the description.
+Protronics99 I love the video! I would like your advice with my project. I need to send a welding machine a operational command via voltage. 0vcc = 0 output amps, 15v = 200 amps. This factory circuit works great, however I want to send a pulse command.
If I build the circuit shown in your video and instead of powering led bulbs I would like to send a 50% duty cycle square wave message.
So here's my question how would I wire a potentiometer to increase or decrease the pulse rate ( 1 hertz to 300hrz)?
I know I can send a signal voltage into PIN 3 and have a signal out of PIN 3 at the same voltage then just use a POT on output of PIN 3 to change the "background" voltage to a percentage
Example
7v _____ _______
| | | |
__| |__2.5v__| |
0v------------------------------------
/ -- variable----/ (in hrz)
So the machine would give 150 amps then 75amps 50% duty cycle at a desired hertz.
Thanks hope to hear from you soon.
Well the "sketch" of the wave didn't come out good but I hope you understand lol
Nevermind I got it. Instead of a 47k resistor I used a 100k pot www.seekic.com/uploadfile/ic-circuit/s2013350423301.jpg
@@austinharrelle i understood the sketch :)
How do i make it flash faster??
+Iain Barnard - Try it with a smaller capacitor. instead of a 100uF, 47uF for example. The freq will be nearly doubled in this case.
use 10uf cap
A 220 Ohm resistor should be red,red,brown,gold not red,red,black,gold!!