Dual Flashing LED Circuit using 555 timer on breadboard - Basic electronics Projects
Вставка
- Опубліковано 28 сер 2016
- This video shows How to make a Dual flashing/blinking LED circuit using 555 timer IC on a breadboard. This LED flasher circuit uses 555 timer in astable mode. This video also has the explanation and theory of how the circuit works and how to adjust the flashing rate of the LED lights. You can turn this to fading LED circuit by adding capacitors across both the LED's.
For more 555 timer projects/circuits and simple breadboard projects, check out the videos of this channel.
Components required:
- Breadboard
- 555 Timer IC
- Capacitor: 100 microfarad
- Resistors: 270, 1k, 10k
- Diodes: 2 * 1N4007
- Power Supply: 6V
- Breadboard Connectors
for more information along with circuit diagram, visit: elonics.org/dual-led-flasher-...
Help me make better videos by giving feedback on areas to improve.
About 555 Timer IC:
The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, function as an oscillator, and as a flip-flop element.
Resources:
Frequency calculator (Gives values of Resistors and Capacitors to be used for required flashing rate): goo.gl/SD5f5I
All about 555 timers: www.doctronics.co.uk/555.htm
Working modes: www.555-timer-circuits.com/ope...
Visit my channel for more 555 timer projects.
For more:
Visit: elonics.org/
Like us on: / elonics
Google plus: plus.google.com/+Elonics
Don't forget to Subscribe! - Наука та технологія
Interesting - but the 2 additional Diodes 1N400x are Not necessary: the 2 LEDs do the same work..!
First of all, thank you so much for clearly explaining everything about the circuit. As a beginner I can really use this.
When I try to set this up, my LEDs do not blink, but they stay on continously, both of them. I tried to hook up the diodes the other way around, but with one of them reversed just one led will blink while the other won't work at all.
Please tell me what I am doing wrong.
Or have the 2 additional Diodes something to do with Voltage loss..? At each Diode about -0.6 V.
at last a proper explanation thank you for this
This makes me have flashbacks to my Marine Corps days with the marching tunes lol
Haha. The music has a nostalgic feel to it
Brilliant video. Thanks
awesome one and very helpful demonstrations! thanks a lot!
Hi I have a small problem. My circuit is working but the LED's do not completely go off. They are dimming. What can be done ?
Could you please tell me to construct a heartbeat checking sensor circuit on breadboard using the IC555...... Pls....as soon as possible sir please
Can i ask question? Because i follow all steps and procedures here but my LED 2 can't light up which is connected to 2 resistor in bottom part, Any suggestion? Thank you
I like the videos where he shows schematic and himself explains the stuff.
Can the 555 timer drive 4x Jumbo LED (for lighthouse project - rotating light) Thank you.
why are the diodes needed? works without them
The graphics are great mate
nice project sir
very helpful for new learner & thanks
Thank you very much
Why forward biased voltage should be greater than supply voltage could you pls explain
Great video. Looking forward to trying this! Also subscribing! Aside: Can you tell me what video software you used to make those floating 3D text bits? (They're pretty cool.)
Thanks. I used Adobe After Effects for tracking the camera and Cinema 4D for creating 3D text
what should I do if I have 10 microfarad capacitor
Very useful and precise. Thank you so much indeed
THE MOST AWESOME VIDEO I EVER WATCHED PLZ MAKE NEW VIDEOS FOR SOME BIGGER PROJECTS TQ FOR THIS
Just went out and bought everything to try this and it just went pop, done it exactly as in video aswell and polarity nope
Got a bit distracted by the happy music 😂😂
PLEASE🙏🏼explain why there are 2 diodes❗️Please I have to know✌🏼 Thank you. Boris🇨🇭
well explain 💗
great visuals
You are Awesome!!
Hi. Just wanted to congratulate you on the absolutely AMAZING graphics. You know, the component values alongside the component etc. May I ask what program or software you used for those? I'd like to incorporate those into my videos. Regards Mark in the UK
Thank you. The graphics are made using Adobe After Effects.
any 1N400x diode will work
Why is one LED slightly brigther than the other?
well explained beautiful video
Thank you!
verry nice video m8 ... army theme ... i love it
i think its more just 'merica themed.......
Terrific video and good Martial Music! Does it get any better than this ;) ?!
sir i used 9V... accordingly i added 220ohm resistance for led for safety but one led that's connecting pin 8 is not turning off completely it's just dimming.... but led connected to pin 1 is flashing properly... what to do?
Configuration shown in video is for 6v. For 9v, you need to either replace each diode with two diodes in series. Try to find out the reason.
hello sir my led got burnt because i used a 9v power supply should i change the resistor or any other change should be made???
First, note the forward voltage of the LED you are using. Then make sure the sum of forward bias voltage of LED's + Diode is more than the supply voltage.
Example: If you are using red LED's (Forward Bias Voltage: 2V) then You need to use two LED's in series on either side of the output because the total forward bias voltage = 2*0.7(of diodes) + 4*2(of LED's) = 9.4 which should be and is greater than 9v (the supply voltage).It is less complicated for a 6v supply. I will add an annotation on this.
two words voltage regulator
My led did not got burnt as I was also using 9V battery
this is best video ever like :D
nice video
I'm having what seems to me like a weird problem. At first, when i applied (9v) power to my circuit, the L.E.D.s had a steady glow (or they were flashing so fast i couldn't see). I looked through the comments and saw a person who had the same problem, and apparently I was providing too high a voltage. I added a 5k resistor between + and pin 8. After i did that, whenever I applied power only one of my L.E.D.s would light up, it seems random which one does this every time and i would love an explanation as to why this is happening.
Thank you.
The author made a BIG mistake in the parts list and NEVER specified the LEDs and that is IMPORTANT. What colour are your LEDs?
If you want i can share my schematic diagram of dual LED flasher for your reference. Mine is working.
hi bro
I have made the circuit as you have described in the video..both the LEDs light up..but dnt blink... can you pls help ? let me know wat needs to be done
Remove 1 LED and see if the other is flashing. If it did, you need to add either a diode or LED in series with both the existing LED's. Like this:
|Vin|--|LED1|--|EXTRA LED/DIODE|--|EXISTING DIODE|--|555 OUTPUT|--|EXISTING DIODE|--|EXTRA LED/DIODE|--|LED2|--|Ground|
Elonics - Electronics Projects on Breadboard .. thank you..IL try this
Great tutorial I have liked and subscribed, thank you. John... :)
Thanks for the compliment !
More videos coming soon.
thank you thank you it works and i am not an electrical guy your genius
tim burrows iu
tim burrows you're
The diodes are definitely necessary in addition to the LEDs but I'm struggling to fully understand why. My best amateur guess is that the voltage drop of the diodes reduces the current to safe operating levels for the LEDs. Am I close?
Yes, you are close. Without the diodes, both the LEDs are as if they are in series with the power source. And if the bias voltage required for both the LEDs to turn ON is less than the voltage of power source, both the LEDs will always stay ON irrespective of the output from 555 timer IC. So by adding diodes, we prevent both the LEDs from turning ON directly via positive and negative rail.
@@elonics thank you for the clarification. Could resistors be used instead of diodes to achieve the same result?
@@BigTunaTim76 Yes, resistors can be used to achieve the same result. Here's the demo of that arrangement: ua-cam.com/video/TTQnhIkw4Bk/v-deo.html
I see your projects it's really nice. clearly in the dual led flasher circuit you use only two leds but i want to connect more leds because in the project connect to two names (RAVI and ram). how to this project complet..plz.. help.. me..
Use multiple LED's in parallel in place of each existing LED.
Elonics - Electronics Projects on Breadboard hi....
connect the leds in parallel but only four leds are glowing.
put them in series with a resistor
Sir ur great. i want 12v single led flasher like rc airoplane strobe. Could you define diagram for this rc strobe circuit
I've made a video on that: ua-cam.com/video/gTn_HmzXYLo/v-deo.html
I used 9v both the led r glowing.is there any process to overcome that problem
+Guru Karthik Add more LEDs in series on either side of the output. Until only one side glows at a time
May i know how many capacitor are need to add and where should i place the capacitor on the pcb board?
You need only one capacitor. i didn't make the PCB layout yet
I used 1 capacitor and place the anode of the capacitor in pin 2 of 555 timer IC and the cathode was placed/connected in pin 1 of 555 timer IC. Just sharing what i did.
Clever circuit setup, but can you tell me why you did not use the conventional approach of using one resistor for each LED and no extra diodes? Is it because you wanted to connect the LEDs in series between the two power rails? I think people new to electronics may be better off building the conventional design. Your instructions and video are super clear. Great job.
Yes, I wanted to connect the LEDs in series between the two power rails.
Diodes are added to make the total forward voltage of diodes+LED's greater than supply voltage, so they don't turn on without any voltage at the output of IC.
The only other option I had is to use npn and pnp transistors at the output so as to isolate both the LED's. But that'll be more complicated.
Is there any other way to do this?
Thanks for the compliment ! Your video lessons are great by the way.
I cannot immediately think of another way to do this. I just wanted to be sure I understood your goals. This circuit is also an excellent example of how to do something in a non-standard way to show that component properties can find unexpected applications.
Elonics - Electronics Projects on Breadboard I think the choice to use diodes was really interesting! I thought about it for a while and came to the conclusion that you had indeed used them to drop the voltage but I wasnt sure because I was uncertain as to whether or not current still flowed if the led wasnt lit! Great work, I think it would be cool to do a follow up video!
Whats the name of the battery power supply you use?
I've used 4AA batteries in series to get a voltage of around 6V
what's the voltage of the capasitor of the flashing circuit
It should be greater than the supply voltage. I have used 16V rated capacitor
please help me for 12v dc diagram make same project
Replace each diode with four diodes in series or
each LED with three LED's in series.
You are basically making the forward bias voltage of diodes+LED's greater than 12v between the rails.
Thanks
can i use 12v power on this?
Yes, but you need to replace each LED in the present circuit with 3 LED's in series. So in total you need to use 6 LED's.
I will make a video on a dual flasher circuit that works at any voltage, soon.
its ausome seriously... step by step... I'll try this... its really helpful for d beginners
Can 270 ohm resistor be replaced by some other one??
Yes, with any resistor between 220 & 1K. More the resistor value, lesser will be the brightness of the LED
What are the application of dual flashing light?
Minhazul Rony there's a friend of mine who goes by the name of GOOGLE you can ask him. He will answer all your questions. Thanks me later.
super
When I try this setup only only one LED light is work another one is not work can you tell me what is problem
Try having one LED.
and not two
If it worked, the supply voltage might be higher than the sum of forward bias voltages of diodes and LEDs.
Try taking out the diodes
Great video, it would be nicer if the chip was upside down
Thanks. You mean, the chip should be upside down when the components are shown or while describing the steps?
can i use 1n4004 instead of 1n4007?
Yes, you can.
Thank you, i already did it and it works great. Good video :)
the music .... XD
can i use 14 valt
No, you should bring the voltage down to voltage around 6V and then power the circuit
Can I use 9v and a red and a blue LED
Yes. If both the LED's glow at the same time, add an extra pair of diodes to them.
@@elonics but where to add etra pair of diodes
LEDs are not alternatively flashing..wt to do now?
sathvik mateti simply remove everything and just add switches in series between both the led's and connect it to power supply.
Now use your god given precious hands to alternately switch on/off both the led's.😂
Try having one LED.
and not two
If it worked, the supply voltage might be higher than the sum of forward bias voltages of diodes and LEDs.
Can i use 220 ohm instead of 270 ohm plzz rply
Yes
@@elonics tq for ur rapid presence☺
555 can sink/source up to 200mA
Good day sir, Im using 2 red LED and it wont work, it wont blink
carl justine encarnacion connect it to mains power supply and it should work.............................................................for probably around fraction of a second 😂
did you check the Vcc?
I followed these directions, and my IC went up in smoke. Turns out I was putting 15.1 V out instead of 6V. It smells bad in here.
Can't you use a voltage regulator?
schematic?
Added schematic to this project's article: elonics.in/breadboard-projects/dual-led-flasher-circuit-using-555-timer
make more videos
Both leds are glowing not flashing one by one
Try having two LEDs in series in place of each LED.
If it worked, the supply voltage might be higher than the sum of forward bias voltages of diodes and LEDs.
@@elonics Thank you I was facing the same problem I read your reply and modified the circuit a little by adding a variable potentiometer between the circuit and supply, adjusted it and now it works wonderfully!
Ya only one led is glowing but 2nd led is not glowing
If you are using a power supply more than 6V and multiple LEDs in series, try removing one LED towards the non-glowing side
make new video
My LEDs are not blinking ...😭😭😭😭😭
Try taking out the diodes
If it worked, the supply voltage might be higher than the sum of forward bias voltages of diodes and LEDs.
Can you be more american ? loved ur videos btw.
Ah yes: the 2 additional Diodes are used because of Voltage-loss of 0,6 V each which leads to the 270 Ohm resistor if you expect 20 mA for one LED! Correct? :-)