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wigwag setup?

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Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
Printed Date: October 05, 2022 at 8:08 PM

Topic: wigwag setup?

Posted By: chp10_8
Subject: wigwag setup?
Date Posted: October 07, 2008 at 9:01 PM

I'm trying to make a wig wag set up that will operate like this L, R, L, R, L, L, L, R, R, R, L/R, L/R, L/R AND SO ON......... IF YOU NOTICE THE MAJORITY OF FIRE TRUCKS AND AMBULANCES HAVE THESE..... SO IT IS POSSIBLE  Thanks in advance and does any one know how to accurately create on for the rear tail lights that will interrupt when activated but when not in use the brake lights opperate normally, thanks again :)






Posted By: ckeeler
Date Posted: October 08, 2008 at 9:51 AM
i have a setup for alternating headlights, but it doesnt operate in the way you describe. it operates in a L R L R L R sequence.

Posted By: KPierson
Date Posted: October 08, 2008 at 10:28 AM
Do some research in to microcontrollers.  They are small, cheap, and user programmable to do pretty much whatever you want them to do.  Do do an intricate setup like you have you will need a dedicated electronic controller.  I can almost guarenteed that that is how EMS vehicles do theirs.  Also, with a microcontroller you can program it so that the brake lights still work while the wig wag is active.

Kevin Pierson

Posted By: jeffwhiteman
Date Posted: October 09, 2008 at 9:57 PM
Kevins right, a microprocessor is the way to go. If you dont need this asap, and are interested in making it yourself, you can learn how. Parallax is a company that not only makes these chips, but also sells a kit called the "basic stamp starter kit" or activity kit. Its about 100.00 and has everything you need to get started. they also have a forum much like this one with lots of knowledge and helpful people. They will help newbes, but i would suggest getting the kit before participating.

Posted By: KPierson
Date Posted: October 09, 2008 at 10:31 PM
If you want to do it on a budget look in to the 8 bit Atmel AVR line - for under $5 you can make a parallel port programmer, obtain all necesarry software, and buy the chip for your project.  However, you will still have to learn how to program it!

Kevin Pierson

Posted By: jeffwhiteman
Date Posted: October 10, 2008 at 7:34 AM
i have been doing a bit of tinkering myself lately. Any idea where I can get a DTMF decoder chip? (not surface mount... i drink too much beer!)posted_image

Posted By: chp10_8
Date Posted: October 12, 2008 at 6:01 AM

Will check out those processors Thanks


Posted By: n2ixk
Date Posted: October 12, 2008 at 12:35 PM
jeffwhiteman wrote:

i have been doing a bit of tinkering myself lately. Any idea where I can get a DTMF decoder chip? (not surface mount... i drink too much beer!)posted_image

I've used the 8870 from CP Clare a few times. Available in an 18 pin DIP from DigiKey. Needs a 3.58 MHz color TV crystal for a timebase. Datasheet here:$file/M8870-R3.pdf

Posted By: jeffwhiteman
Date Posted: October 13, 2008 at 9:11 AM
thanks. exactly what I was looking for. Do you know of a supplier? I just did a search and didnt find much

Posted By: jeffwhiteman
Date Posted: October 13, 2008 at 9:44 AM
nevermind, just re read your post

Posted By: n2ixk
Date Posted: October 14, 2008 at 11:49 AM
If you only need 1 or 2 pieces, most semiconductor manufacturers will send "engineering samples" free of charge if you make a professional-sounding request.

Most companies don't want to be bothered with the hobbyist gadget-builder market, but if they think that you are prototyping a design that you will actually be marketing, most will bend over backwards to get their chips designed into new products during the development phase(which locks in future sales for THEM).

Posted By: jeffwhiteman
Date Posted: October 15, 2008 at 7:21 AM
Thats a good idea, I'll have to put my BS cap on...oh wait, i never took it off!. Nothings ever easy. dont they realize we're writing the next grammy here posted_image

Posted By: veneficus
Date Posted: November 07, 2008 at 12:58 PM
I know exactly what you are looking for.

the pattern you are looking for (L/R single, simult, L/R double, simult) is the SoundOff Signal, Q-switch pattern.

I have this pattern and 7 others in my camaro. My system isn't as cheap, but it is much easier than a lot of other methods I've seen posted here. My high beams flash alternating, and in the rear my backups alternate with my amber turns. Total cost in my wigwag system including relays, controllers, wire and drive relays is about $100. This can be done for much less depending on installation and control setup (not everyone needs their control switches to be remote)

I've designed some pretty amazing lighting systems as well as the controls for the lighting systems (wireless remote even) in short, if you can dream it up, I can make it happen.   Most of my super custom work has been on my Tahoe PPV and my B4C Camaro. I do all levels of design, build and install. I can easily design and build a system for you to have you or a local installer finish.


Posted By: hotwaterwizard
Date Posted: November 09, 2008 at 1:41 PM

You can do it with a 4017 IC fairly cheep. Here is the basic circuit but it needs some kind of power transistor or mosfets or Relay outputs added to handle the current .


Here is the Datasheet

Here is where I got the Idea.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: fordguy218
Date Posted: July 13, 2009 at 12:16 AM
Or you could always purchase a Sho-Me, Able2, Gall's, Soundoff Wig-wag flasher. You can even pick the brandname you want! That's so much simpler than designing your own wig-wag system. IMO, I'd rely more on a $40 solid-state device over my own inginuity.


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