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Postbag #29: Fun Re-Wiring a 555 and 4017 LED Module
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- Опубліковано 14 гру 2014
- Just one item in today's postbag - the most fun I've had for £2.50 in a long time. This 555 and 4017 module had a strange sequence of red, white and blue flashing lights. I felt compelled to re-wire the diode matrix to create a UK traffic light simulator.
The item I bought:
Check out what I found. 2014 New CD4017 NE555 Detonation Flash Light Suite DIY Kit 12V www.ebay.co.uk/... via @eBay_UK
Otherwise, search eBay for "555 4017". Here are some results:
Check out what I found. NE555 + CD4017 Light Water Electronic suite DIY Kit Electronic Kit www.ebay.co.uk/... via @eBay_UK
Check out what I found. Electronic DIY Kit CD4017+NE555 Explosion-flashing LED Lamp Set l www.ebay.co.uk/... via @eBay_UK
Check out what I found. 1PC New NE555+CD4017 Light Water Flowing Light LED Module DIY Kit www.ebay.co.uk/... via @eBay_UK
Check out what I found. Hot NE555+CD4017 Light Water DIY Kits Electronic suite Components New www.ebay.co.uk/... via @eBay_UK
Love your videos, brother. It's pretty clear you're a senior-level electronics guy, but you still manage to look at relatively simple circuits with the fascination of a child. Good work, thanks
mnelson10000 Thanks, I appreciate the compliment. I think it was Einstein who said he asked himself childish questions, then set about answering them.
I love watching your postbag videos. You are excellent in your demonstrations and descriptions. It's nice that you've edited out the boring parts too. Thank you again!
I think royal mail saw the word "detonation" in the title of that led controller.
Yes, that's a thought. If that word is on there though, it's in Chinese. UK customs being vigilant - I should be grateful.
Yep. Keywords.
But why is there "detonation" in the item title? So strange.
permababy
probably poor google translation...you know how japanese/chinese languages get translated
permababy
That's the reason why automatic translators never worked very well.
Could be that the chinese word for "flash" or "strobe" (I think they would call it something like this) also means "detonation".
Your video brought back memories of a time looong looong ago when I started playing with things electronic - I recall doing the old "traffic light with pedestrian crossing" for my N-gauge train set back in the dark ages - now I scratch my head with ARDUINO and PICAXE and thoroughly enjoy your uploads - Thanks!
So I love your Videos and I thought I would get a Kit and Solder one up. It to came with a Red, White and Blue. Same looking cables and after spending all the time it takes to Solder up 48 LEDs and the Control board. Again all 100% same looking setup as yours. I look over everything to make sure there was no shorts or any extra solder to bridge things. I connect it up and I get nothing. So i test the Wires and all the wires are no good. No damage that you can see by the eye. So I take my Bread board wires that I have extras of. Solder up some connections to the system. connect the wires to the Breadboard for power and I get a moment of Light. Then I look at my Power supply and see it climbing in AMPs when it gets to about 1.5amps I hit the dead man switch as I now also start to see smoke coming from the 4017. It is crazy. It cooked my 4017 and the 555 as well. Put in a good 555 and 4017 from one of my other projects turn it on and it worked just like yours.
Then I thought I would look into fixing the wires. All 8 and this is Crazy ALL of them are DUST inside the Insulation. I haven't ever seen something like this. I took out the clip from the holder and you can see what looks like Copper wire at the end. However that is only place there is any trace of wire. The insulation from end to end was just DUST. I think there was maybe 1 that had 1 strand of 1/16" long, however it was also breaking down into dust. I touched the strand it and just fell apart. Another case of getting Bad China Fake chips for the control board it seems. In the last 2 months I must have gone through 12 China fakes that takes out the 4017 and the 555. Not sure why. It is sad really even buying from USA sellers can get Fakes Tried that too lol. When I say fake I can use my known good 555 and 4017 in all my projects at 12v for hours no issue. Fakes more then 5.5volts they blow up and some items don't even want to work with such low volts lol.
How bizarre. I stumbled across a PCB a few days ago that I made many years back, that uses a 555 and 4017 with diode matrix to "swing" a six LED pendulum. The 555 and 4017 were a big favourite of mine due to their very gratifying function.
bigclivedotcom I never did CMOS back in the day - I was a TTL fan boy. Catching up now though!
I kinda started off with CMOS and stuck with it. The wider voltage range and ultra low current was appealing.
I remember building one of those - a 6 set of LEDS and diodes to use the last 4 outputs to produce the "swing" or Knight Rider scanner led effect.
Awsome mod :) Reminded me of my early days in electronics. I had a 555 and 74194 shiftregister with 8 LED's.
A good reuse and cheap as chips.
Looks ideal for model railways, same type of module could be used for emergency vehicles, traffic lights, Christmas light sequences...you've probably expanded their market :)
Love the "re-programming! I had a closer look at this kit today, and I'm pretty convinced the S8050 transistors are "backwards" on the PCB: S8050 NPN usually have EBC pins, but these are connected like CBE NPN low-side drivers. still work, but probably exceeding max E-B voltage and not driving the LEDs optimally.
I assume that the kit is imitating a warning light for an emergency vehicle.
Well done. Suggestion for rev B. You have a 4:1 ratio of red and green to the yellow and red/yellow...obviously because of the 4017 10-states. Using your same diode-or logic, you can selectively feed back some current during chosen states to slow down the 555 capacitor charging. This would get you a ratio of say 10:1 or 20:1 which might better represent traffic light timing.
Epic quote at 4:00 !
What is that? What have I bought?? The eBay trinket shopper's dilemma.
Good god how much stuff have you got in your house!
Has your wife noticed you are going 'slitty eyed'?
🤣🤣🤣
I love these postbag videos.
is this the same for you guys?
i order a lot from aliexpress and tought about making my own postbag videos.
Cool. Id enjoy seeing more clever uses for the 4017 IC chip.
kekejojo1212 I've been tempted to get a few more 555/4017 modules!
Awesome. This one made me smile the whole 13 minutes. Bodging FTW.
beargun42 It was such fun, I couldn't put it down.
It seem like a car police lights i think
exaclty what i thought.
MrWilliam932 It's definitely flashing police warning lights but the sequence isn't quite right. Hopefully Julian can get the sequence right.
I'm late to the party but I have to agree.
So i hazard a guess the dice board doesnt do any randomisation, just cycles super fast and stop when you release the button?
jusb1066 Exactly that.
How the green board on your workbench is called? Greetings from mexico!
I want to buy one too.
It is called a "A4 Workmat".
Isn't it lights for American police cars?
Now you come to mention it - it does look a bit like that. Shows how much American TV I watch!
Just what i thought of :)
I thought the same
Me too. I still don't understand the detonation part though. Must be lost in translation...
Julian Ilett
Obviously a man of some taste and refinement Julian.
Reading some of the other comments and one word almost leapt off the page, hazard. I'm thinking the seller in that great Chinglish manner has confused detonation as a generic term for hazard as in hazard warning lights.
In another of those serendipitous moments the picture of the LED die is from a fellow Aussie and great pioneer of electronics education from the 80's, Collin Mitchell of Talking Electronics. Amazingly he has a web site www.talkingelectronics.com The interviews are worth a watch BTW
I came across a lot of diagrams for circuits like this that use the 4017 when I was learning to use the 555 a few months ago.
Great vdeo, Julian thanx.
I think that circuit is simulating the POLICE car flashing lights.
I know this is an old video, and I've watched it quite a while ago, but it just dawned on me what you can do to get the green yellow and red effect out of what you have. Just buy some kind of yellow gel sheet or just some kind of yellow plastic diffuser. And then put it on top of the white one to make them yellow, and to put over the blue ones to make them appear green because blue and yellow makes green. :-)
Why didn't you just short a couple of the higher V LED's to get enough voltage across the others in the row to see if they light?
I have a few kits that was Solder your own, Even though I had them all done right, I did as your Video and blew both 555 and 4017. Looking at the 2 that didn't make it. I figured out that they are Fake chips and only can take a Max of 5 Volts. I have some real chips so I added them to the Kits and did confirm they were Soldered right because the good Chips worked just fine even over 9Volts. I have found that buying things form some Sellers in China isn't always Smart. Even one that you have bought from. I have 5 kits that are Missing. I have bought from other sellers in China since those packages have shown up. I do hate to wait lol.
hi J l...
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i have one finish LED kits with 4 PCBs...
can work with 6 LED speakers
cool way of using diodes as OR gates
viermidebutura the diodes can also be seen as a tiny ROM (read only memory).
Hi Julian, I realize Postbag #29 was in 2014 but I think I might be able to explain a few things. Firstly, the condition of the package (it had been opened by customs) was to be expected. Unfortunately, alarm bells would ring if your package, which has random components and a coil of wire, was xrayed at the right angle. Not that it was a bomb as some viewers posted, but it might have been components to MAKE a bomb. Secondly, the Chinese translation didn't help you understand the purpose of the device. I have seen identical devices listed under 'Emergency Strobe". I did find Detonation Light Suite amusing. It is certainly not a traffic light. (Wrong colours, also a little too fast to be of any use). The unit is supposed to be housed and positioned behind your car when changing a wheel. Thirdly, I'm sorry that you went to so much trouble to work out the schematic. I found the exact listing on EBAY and found that at the bottom of the page, lakeyx101 had posted the schematic and a flash pattern of the red, white and blue Leds. I hope I have been some help. Alan.
Looks like it emulating police car lights and it’s almost identical to police car here in New Zealand .
Hi Julian, could you do a video on driving high power RGB LED's? Possibly using an arduino to fade and flash each colour?
Dan Skinner I've already done an RGB LED video
Julian Ilett I realised just after I posted my comment that you had! My mistake :D
Definitely a police car beacon. All you'd have to do to make it complete is to mount everything on a motor and make it rotate. :)
Each sequence, on OR off, counts. There are 10... which is unsurprising considering the 4017 is a decade counter.
Where did you get that 12v (18650) power bank?
I have a set of these taking up space in my junk floppy disk box. I have disposed of all my old 3 1/2 inch floppy's and now use the plastic boxes to store my Arduino's and LED/LCD Screens as well as plain old junk projects such as this. I do play around with them around Christmas time in our RV since we spend the Winter months in the Mohave Desert in South Western Arizona, and will once again this year, if I can scrape up enough money to go once more. Very cool idea of delay and resetting them, not real sure what, if anything I will do with the set I have. Perhaps toss them in the back room that is filled with old computers and parts dating back to the mid 1990's. Anyone with a truck that would want to come and pick up a load? Wife says I need to get rid of it all, sad thing is that I sold my Ford Pickup truck last fall, and now all I have to haul anything is my Ford Edge SUV that I plan to use as a towed this winter for our RV.
Where did you grab that battery holder?
are the whole world same traffic light you said uk style traffic light ?
Mustafa Usta I'm fairly certain the UK and USA light sequences are different
Ok it is interesting
No, some countries either only have the single amber light, or go from red to green with no amber light in between.
You shouldn't be waving that pencil that close to the pads on the circuit board
Ditto!
Niek Blankers True. 20 ohms across the tip!
Looks like a police light or something ?
SOS on the First 2 Banks.
looks like a cop car light in deed
annnnnd now I have a headache :D
3:35 That's how I broke my first 555 chip, by mixing up the terminals on a 9v battery. :(
The LED lights are the same pattern used by police cars in the USA.
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how about 5 boards of LED lights.....
blue - green - red - white - yellow
Do you ever respond to question.
If the question makes sense, and the video is fairly recent - yes :)
@@JulianIlett I just want to know how you rewired the lights. I am a disabled vet. Trying to learn something to keep my mind straight
Hi
I bet it was customs (or whatever you guys call them over there). They carelessly slashed open the package to inspect the product in typical criminal government fashion and went a little too deep and almost ruined the items in the package. We've learned to expect that type of handling by our government goons over here in the states.
Looks like a light bar on a police car.
Police lights
First comment I think