I need a circuit that will flash a light at fairly accurate regular timed intervals. Perhaps the easiest might be a battery circuit with LEDs, but flashing a mains-powered light would be OK if easier. It is for use as a light metronome, so I need to be able to vary it to between 40 and 200 flashes per minute. Have searched the net: lots of flashing circuits, but none that can be varied in tempo in a reasonably accurate way. Grateful for any thoughts!

Posted by LDW 6 years ago

Rc light ,flashing light

Ive tried and tried to get an LED to light up (on at all times) then add a flashing circuit on same led like a car turn signal. Any help would be greatly appreaciated

Posted by jbrownskunk 1 year ago

120 volt flasher circut

I need some help finding a way to flash a 120 volt incandescent light bulb. Im looking for a way and have found close to nothing. if any one can help, thank you

Posted by newwarhammer2 6 years ago

LED Flasher Relay

Can anyone help me build a LED flasher replay capable of running approximately 100 LED's. I would like it to alternately flash and have a strobe like effect, similar to what most emergency vehicles have!!! Thanks Dave

Posted by Jeepcop274 11 years ago

Solar Powered IR LED Flasher Circuit Request

I need a circuit that will flash a standard IR LED. I do not want it to include a 555 IC or any other such digital control. This needs to be analog. I plan for it to run off of a solar cell(the one i have provides power at .5V and 1.5mA) with a rechargeable battery as a storage bank. I know this is extremely low voltage/current for a recharging system, but if you have a solution by all means include it. Blinking rate is not that important, although options for changing the rate would be appreciated. It should not blink slower than once/sec tho. I hope someone knows enough to be able to pull this off, my expertise is in programming not EE. Thanks --SS

Posted by StingSlinger 8 years ago

LED Turn indicator for Motorbike

Hi Everyone, I'm new to this forum and joined to get some help from all the geniuses here. I'm making  LED turn indicator for my 100cc bike. My present Factory installed flasher rating is 12v 10W X 2bulb. I want to add total of 48 ORANGE LED, 24 in front indcator and 24 in rear indicator. The current drawn would be much less for the flasher to work as the LED would not flash. I want to make 4 parallel set of 6 LED in series. as the total volt would be 2.2v*6 led =13.2. I've achieved the above so far but how to make them blink? Flash would be better then blink !! So can anyone suggest me a simple circuit which I can put in place of factory installed flasher and work the same way. I've 12v 7.2Ah Battery on board. and one thing more If I hook up a 55w/55w headlamp directly to the above battery how long will it last. I'll be grateful for the pain you take for me... Thank You Gurdeep

Posted by gurdeepsyan 8 years ago

Make a Ghetto Simple LED Flasher :)

No programming or 555 Timers are required for this incredibly simple project.Using a pop can, a small motor, and 2 LEDs you can create an LED flasher. Full write up: http://www.hacknmod.com/displayMOD.php?hack=630Video:

Posted by Joe426 10 years ago

S.O.S. LED Flasher Schematic Diagram

'Hello everyone,I looking to find an electronic schematic of a small LED flasher circuit thatflashes an S.O.S. light code. 3 short flashes, 3 long flashes, and 3 short flashes, than a 5 or so second delay, than repeats.Hoping to us a 555 timer IC.This is for a science project for my 14 year old.HELP! Thanks.Anyone?'

Posted by mark liles 10 years ago

555 Car Flasher unit circuit

Hi, I'm wanting to put some led indicators in my car because they are so efficient but my current flasher unit isn't designed to run such a low load.  It is also relay based which probably isn't the most efficient way of doing things and with it being an old mini it sometimes rattles itself at whatever rate it feels like flashing at at the time so I wanted to use a transistor instead. I've come up with the circuit attached and built it but when it is running all the indicator lights for the hazzards, the transistor gets hot! Surely there is a better way of doing it? Could someone have a look and see what could be changed? I don't know much about transistors but I know that I'd be better getting it to 'saturate' and act as a low resistance switch but I don't know how to achieve that.  It also has to run under two loads, indicators and hazzards, and has to flash at the same rate for each - between 1hz and 2hz. http://www.dprg.org/tutorials/2005-11a/index.html I think a variation of this circuit might be better (it makes use of the discharge pin rather than the output pin), with the load at the ground side of the transistor because it has to be an output pin on the flasher unit. I've got some BFY51, BUY82, BD743B so it would be great to use one of them. in short: what's the best solid state fixed rate 12v flasher driver using a 555 that can supply around 2 amps using as few parts as possible? Thanks for your time, and sorry if I've done anything wrong!

Posted by arichardson 6 years ago

41 LED Flasher Circuit using 555 IC

Ok I've managed to get the single LED working but not the rest what am I doing wrong ????????

Posted by TattooedJudge 2 years ago

SMD IC Star LED Flasher Kit

Here's a kit that pays homage to someone we all know and love...http://www.goldmine-elec-products.com/prodinfo.asp?number=C6708

Posted by ewilhelm 10 years ago

(SOLVED) 555 LED flasher slows...

I am attempting to recreate Duck210's guitar LED mod. However, I am having problems with the circuit. https://www.instructables.com/id/LED-Guitar/step3/null/#images As I have said, it gradually slows to an ultimate stop. Any ideas? Please help! Thanks in advance,     ~H4ZZ

Posted by __DELETED__ 7 years ago

need help to buidl a single and small rgb flasher or dimmer

​i have a question, how can i make a rgb flasher or dimmer that runs with 3v and as small as possible for a key chain, just one rgb led, if anybody can help me please with a schematic, pcb or something. thanks so much please email me. i really apreciate it, my babys first year birthday is coming in 20 days and i want to make like 30 key chains like that for the kids coming to the little party. thanks so much again.

Posted by alxandre.alzate 2 years ago

Where can I get phone flashers? (they blink when your cell rings)

I had a cheap phone flasher that I got off ebay, and when its battery died, I dissected the turtle and pulled its blinky guts out. Anyway, it works great for one of my projects, and I want to buy more, but can't find them anywhere. I bought several others off ebay, including more turtles, but they all had different blinkers inside them, which sadly do not work for me. I'm attaching a picture of the part I want. Anybody know where I can get these?

Posted by aliasjanedoe 8 years ago

"flasher" or strobe or similar for battery

Hi, I'm kind of new to this and don't know what I want, but can describe it.  I'm looking for a small, inexpensive device that will turn a battery off and on.  I have a battery powered electromagnet that moves a clamp.  I want to make something like Clamps from Futurama where the clamp just opens and closes on its own about once every two seconds.  I've got the battery, battery cover, and wire leads on that end.  I've got the clamp, wires, and normal on/off switch on the other.  I just need the bit in the middle.  I can use a regular on off switch, but I don't want to have keep constantly flicking it off and on. All of my google searches end up pointing to either strobe lights, car electronics, or Christmas lights.  None of which will really work. Any ideas of what this would be or where to get a couple cheap? Thanks!

Posted by BobR90 1 year ago

On wednesday i saw

An RX7 just barely parked on the side of 410 with the flashers on, and a girl by it, she was pretty cute actually, and a ford explorer behind it, and knew, by instinct, the engine probably blew, due to not changing the oil, not putting oil into it, and just not taking care of it. Damn, another RX7 OFF the road, just what we need. I am just glad i can think of Aaron Cake's RX7 sleeping in its home, safe.

Posted by Yerboogieman 9 years ago

Direction/turn signal indicators making them brighter with led bulb I need help pls

Hi. I somtimes ride a 1985 yamaha ms50 pogal 50cc moped. It has an 6v electrial system where as modern day scooters are 12v. I bought a knew indicater relay for it and checked all the bulbs as the turn signal indicators are not so easy to see flashing. I mean, on average sunny day other road users would need to look hard to see them flashing. the bulbs are 6v 15w and both old and knew flasher relays gives output of 6v 40w. I would feel much safer when turning if I had a bulb that gives a brighter flash to give other road users a better idea when im turning. I can see on the web there is a 6v 5w and 10w bulb I can try or even 6v leds but I dont know much about leds. the stanadard factory fitted indicater buld 6v 15w gives an ok flash at night, but in sunny daylight I would need to be close up to see it flash which is no good! I don't want to change the originality of this little ped since it has been carefully taken care of over the years and has made it in intact into current times as is. I need to come up with somthing that will work and if I replace a buld with a 5w or 10w when it should be 15w I may get a brigher flash or just blow the bulb. I wonder was there a problem or just bad design with the indicator lights on the yamaha ms50 pogal when they first came out in the 1980's as I have seen a couple of them fitted with suzuki fz50 indicators and other makes of bike turn signal indicaters on them. I don't think the flashers are faulty I feel they where just made that way. I could be wrong. I suppose there could be a bad earth on the flashers. Sorry to go on so much about this. Im looking for your suggestions for a brighter indicator flashers which is purely for safety reasons. If car drivers can see where im turning, im less at risk of being nocked off by them. Im thinking a higher or lower wattage incandescent 6v buld or even a replacment 6v led buld ive seen on ebay but as I said. I know nothing about led bulbs or even if they will work on my moped. Would a equivalent 6v 15w led give a brigher flash than a 6v 15w tradisional incandesant bulb? can someone help me here pls Here's the led ive seen on ebay http://www.ebay.co.uk/itm/2pcs-E10-6V-9V-12V-24V-INDICATOR-LIGHT-BULB-LED-WL-ay-/330859527741?pt=LH_DefaultDomain_3&hash;=item4d08c3be3d these are the standard 6v 15w bulbs i want to replace with brighter led bulbs http://directshopping4u.com/6voltvehiclelighting/P244A10  

Posted by selectauto 5 years ago

My strobe light has a problem....

I have a miniature strobe light that I salvaged from a crappy Halloween decoration. I was planning on strapping it to my bike, just as an added accessory. Anyway, it worked fine, then is started being faulty. Now, it does not want to flash at all. It isn't charging the capacitor, so there is a problem somewhere before there. The strobe light has a cool option of either holding down a button or using an on/off switch. I cannot find any loose wires or shorts. Is there a way to tell if the flasher is broken? It hasn't been dropped, so I don't guess that that would be the problem. Any help would sure be appreciated!

Posted by Bran 10 years ago

NE556 doesnt seem interchangeable with LM556

Hi, built this 556 timer-flasher many times with a NE556, always worked. Made this triple one with NE556's and can only get it to flash but not time! Put a LM556 in its place and works perfectly. Never had to do this before, but then put a 0.01uF on #3 and #11 and #4 to Vcc on a NE556 and still doesn't time. What is really weird, I built one 2 weeks ago with LM556 at ends (thought they were NE556) and a NE556 in the middle and they all worked fine, don't get it! I thought NE556 and LM556 were interchangeable. The main components are the same, pullup resistor 10K, RGB LED, timing resistor 1M, cap 10uF, it must be something very simple I'm over looking but cant figure out what. help! Les 

Posted by lasaintlouis 11 months ago

LED Build Night at RevAmp

After having a huge success at our first Build Night at RevAmp and having many people turn up with great projects. The best out of which we found to be LED costumes as many people worked on it. We had two build nights The first day we had projects like LED Cube, LED lamps, LED flashers... and the next day we came up with an idea of making LED costumes and brought arduino into the  picture. The costumes were Bluetooth controlled and we later had a special android app developed to control the led. We had made 3 LED costumes at the end of the day. And we also practiced some cool led dance moves as the LEDs looked quite cool in the dark. After 2 days we all learnt new things and had fun with the LEDs.

Posted by ThisIsSteve 3 years ago

Need help with Led project (time sensitive)

Need help with Led project (time sensitive) Hello I am currently working on a project that has less than 3 weeks till the suspense date. One aspect of the project I will be adding some LEDS. I want these LEDs to flash. So I got the following stuff for this project: LED Flashing kit MK102 by Velleman from Fry’s Electronics 100 rectangular flat clear 2mmx5mmx7mm LEDs (DC 3V 20mA) 400 DiCUNO 3mm LED assorted colors Forward Voltage: R/Y 1.8-2.2V B/G/W 2.8-3.2V Max Current: 20mA The issue: Ok so I want to take the LED flasher kit and instead of using the two supplied red LEDs I want to run two series of LEDs. One series will have two flat clear LEDs and one clear 3mm LED. The second series would have one flat LED and one 3mm clear LED. I have other colors but I figure if I stick with the clear LEDs, it makes everything simple and I will simply paint the LEDs the color I want. I would like to use all the other circuitry that comes with the kit and simply add each series where you would normally add the two red supplied LEDs. This kit runs on a 9 volt battery. So, I am assuming that I can simply replace the supplied resistors that come with the kit with ones that account for the LEDs I want to use? I am attaching the diagram from the kit for clarity, I hope this is making sense. Any help you can offer would be appreciated.

Posted by 11b30b4 1 year ago

Let It Glow! Contest Winners

Instructables and Monkeylectric are happy to announce the winners of the Let It Glow! Contest. The competition for this one was pretty fierce. Some very creative and crafty people entered some amazing Instructables and will be providing inspiration to other makers for a long time to come. The efficient LED was the most common tool of illumination, but there were also glowing bulbs, EL wire, candles, and even algae. It was a good show put on by all.If you didn't win, we highly recommend you check out the prize, the m132s from Monkeylectric. The pictures of it are fantastic and it looks even better in person.OK, on with the winners! Third PrizeThe authors of these Instructables will each receive an LED Throwie kit and an Instructables Robot t-shirt. 1up Mario Candle Animate with light Audio Visual Art....FOTC Style Building your own ambient color lighting bars Goldie's Toxic Waste Barrels Grow Your Own Bioluminescent Algae How to make an Iron Man Arc Reactor Light Bar Ambient Lighting LED Disco Light in a Jar! The Lucid Dream Machine Model Rocket LED Glow Effects Razor Scooter Underglow Double Mod! Second Prize The authors of these Instructables will each receive one (1) m132 bike wheel light, and an Instructables Robot t-shirt £5 Japanese lamp from recycled materials Animating Multilayered Engravings FlashBack - Backpack, Camelbak or Jersey Integrated LED Bike Flashers LED matrix using shift registers First Prize The authors of these Instructables will each receive a set of two (2) m132s bike wheel lights and an Instructables Robot t-shirt. how to add EL wire to a coat or other garment turn signal biking jacket

Posted by fungus amungus 10 years ago

Basic single direction led chaser

Hello everybody. I am a newbies in this world and I am a bit lost. I want to make a project witch is a single direction led chaser. ( 6 led blinking one after another from one to six then start from the beginning over and over). I found plenty of larson scanner nightrider style but those are all bi-directional. Since I don't know much about it, I would need someone to tell me what hardware that I need and maybe a plan of the circuit. I will use 6  orange ultra-bright  5 mm led  VF: 2.1V- 2.5V    VR: 5V.  I would like to know what resistor that I have to use with this setup. I've read about a 4017 ship but I don't know if it is the one that I need for my project. I know I will need a lot of hardware that I don't know the name and that is why I need  help. It will be on a car so it need to be on 12V. I will have to make my schema on a PCB board 1 inch X 10 inches. It would be good if i can adjust the speed too. Since it will be a car blicker/flasher, I don't know if I need to use blinking led or if regular bright led will do. Sorry about my lack of knowledge(and my bad English), I am sure that I forget to mention a lot of detail so feel free to put me on the right track. Thank you for your time people Rick PS: In the picture, we aiming for the 6 orange led. they have to blink one at a time from the left to the right over and over.

Posted by rbrunet 4 years ago

Need a LED circuit to simulate candle

Hey guys, I'm hoping somebody here can help me out. I'm a newbie when it comes to electronics and whatnot. I can read basic electronic schematics (I know symbols for resistors, LEDs, ground, etc). What I'm wanting to do is create some Halloween decorations for my niece and nephew and their friends, which is basically a hand held lantern that has flickering LED's behind frosted glass to give the appearance of a flickering candle. There are several nice instructables I've found here that cover LED flickering, but at most they're dealing with things I'm not really comfortable with (555 timers and other IC's, programmable chips that use hex coding, etc). The effect I'm looking for is a red LED that doesn't flash along with a orange and yellow LED that do flash to give the appearance of a flickering candle flame. I've found a few places that sell these kinds of kits, but I'd only prefer to buy them as a last resort. Since I'm building several of these lanterns by hand, it would really be easier if I could buy several parts (LED's, resistors, caps, etc) and put them all together myself to save money. As I understand it, you can vary the values of the caps and resistors to get not only varying times of flash, but also a fade in/out effect. I think using a 555 timer would probably be easiest to get random flash patterns for the yellow and orange LED's. I'm not opposed to using a 555 timer, it's just I've never used one before and it's been difficult looking at the instructables here that feature 2 LED's that flash or 40 LED's flashing and trying to figure out how I add a solid non-flashing LED into the mix. Would it be simplest to simply buy a flashing orange and yellow LED and then use a cap and resister of varying amounts attached to a battery along with the non-flashing red LED to achieve this affect? Or would it just be simpler to use a 555 timer with two regular LED's to make them flash, and then wire the red LED I don't want flashing outside of the timer's circuit (I guess parallel to it so it still runs off the same battery?). I had considered using 5mm LED, though I'm honestly not sure how bright these would be. I'm not wanting the room to light up like the ceiling light was turned on, but bright enough to definitely be noticeable. I'd also prefer to either run these off of a 9v battery for mobile use or wire up a 12v DC adapter to it for a more permanent solution. I've seen a few sites that offer "single flasher led" schematics, but again, I just don't know how to add another LED to that circuit to have two that flash at different intervals as well as how to add a third LED to it that WON'T flash. I've also seen people use the modified LED tea candles, but again, that is a single LED and I just don't know how to combine that with another (or 2+) LED's in a circuit so they all operate safely off of the same power source. If anybody could lay out the diagram for the three LED's (or if you think it would be brighter to use 2 of each of the 5mm LED's I want to flash for a total of 5 LED's) along with either the r/c circuit or the 555 timer circuit, I'd greatly appreciate it. Like I said before, I've scoured through all of the flashing LED tutorials here, and while they're all really great, there aren't really any that fit my needs and because I'm a novice with this, I don't know how to take the information that's given and apply it to my needs :(. Maybe I need layman's terms for the setup lol. I'm sorry if this is all long winded and a long read, I just wanted to supply as much info as I could to make sure I was (hopefully) understood fully :)

Posted by SmokeGSU 7 years ago