hahahahaha

I was thinking of making one two years ago since they installed the sensors around here...

I wonder how "legal" is it...

 

I know in AZ they use a strobe light device....

Here in socal.... no such devices.

 

That is [censored] cool as hell I won't one just to be the first one on the block to have one.

 

hahahahaha

I was thinking of making one two years ago since they installed the sensors around here...

I wonder how "legal" is it...

yea theyve been in use for ages i dont know why its just now getting known

 

Because now they are trying to sell them for commercial use. Most states do not have a law in place against them, but watch how fast that changes now. The company doing this is pretty idiotic. How does that seem like a good idea from a public safety standpoint?!?!?

 

$300 Device?

You need a strobe that runs at 18 pulses per second. I sucessfully made one that worked invisibly with a batch of high output IR LED's and a 555 Timer. total cost was about $60 because of the LED's.

 

$300 Device?

You need a strobe that runs at 18 pulses per second. I sucessfully made one that worked invisibly with a batch of high output IR LED's and a 555 Timer. total cost was about $60 because of the LED's.

Does it work? What power does it run off of?

 

the one I made worked at pretty much any major intersection in Johnson county, Kansas 3 years ago. I've tried it on lights belonging to the following municipalities:

Overland Park
Olathe
Shawnee
Lenexa
Merriam

I was afraid it was illegal so I never really used it for it's full potential, but after reading something saying 18 strobes per second would change lights with emergency sensors, I had to try to build one.

Maybe I'll dig it out and see if any of the towns have upgraded...

 

alright how would i go around gathering this material. ME and myfriends would like to make a few. I'm sitting in bio and i just found this and told them about it. whats a 555timer and what kind of LEDs do i need how would i get them? as for the stobe would just and strobe light work?

 

just to clarify, does this one, or any of the homemade ones, turn it from green to YELLOW and then to red, or does it just snap the moving traffic from green to red?

 

The pre-programmed yellow delay still occurs on the cross traffic.

a 555 is an 8-pin-package integrated circuit (chip) you can get almost anywhere. It's strength is that is can be used to time or delay things. You set it's delay to 1/18 of one second, and then have the output trigger a pulse that illuminates the LED's. You will NEED basic electronics knowledge, as you'll still need to step down the voltage from the 12v for the 555, to set the delay, you need some discrete components from radio shack, and to drive the LED's you need transistors. It's not something you're going to just toss together after buying a 555 chip and some LED's.

You might have better luck (cheaper, too) building a 18 PPS xenon strobe light with an inductor/capacitor timer, but then it wouldn't be invisible to the cops.

If what I'm saying sounds like nerd speak, then you're almost assuredly not ready to tackle this project without taking a few basic classes or reading some books on electronics first.

 

The pre-programmed yellow delay still occurs on the cross traffic.

a 555 is an 8-pin-package integrated circuit (chip) you can get almost anywhere. It's strength is that is can be used to time or delay things. You set it's delay to 1/18 of one second, and then have the output trigger a pulse that illuminates the LED's. You will NEED basic electronics knowledge, as you'll still need to step down the voltage from the 12v for the 555, to set the delay, you need some discrete components from radio shack, and to drive the LED's you need transistors. It's not something you're going to just toss together after buying a 555 chip and some LED's.

You might have better luck (cheaper, too) building a 18 PPS xenon strobe light with an inductor/capacitor timer, but then it wouldn't be invisible to the cops.

If what I'm saying sounds like nerd speak, then you're almost assuredly not ready to tackle this project without taking a few basic classes or reading some books on electronics first.

This library SUCKS ASS. They dont have crap for electronics books.

(I'm using library internet access)

 

Sounds like its time to talk to our engineers at work

We've been doing similar things here in Miami for over a year. Most people have found out in the more afluent area's you can use high beams equiped with Super White Headlight Bulbs to trigger lights to change to green. As you drive up to the light you just quickly flicker your highbeams and boom the light will quickly go from red to green. You just have to be very careful as the cross traffic gets a very fast yellow to red transition. Works great when your driving around in the middle of the night.

 

Looky what I found.

http://www.plans-kits.com/kits/

 

Looky what I found.

http://www.plans-kits.com/kits/

Vegas here I come!!!

 

Ok, I understand what you'd do with the slot machine thing but what would you need a short range EMP for?
That site is f'ing pUnK

 

Ok, I understand what you'd do with the slot machine thing but what would you need a short range EMP for? That site is pUnK

Destroy a computer, zap someone's cellphone (movie theater anyone?) maybe use it on your alarm clock instead of hitting snooze? the uses are almost infinite!

 

What is the the approximate wave length of the IR LEDs? About how many did you use?

Thanks!
Dearborn Blue Oval

 

25 LED's through a fresnel lens.

Wavelength I can't recall but it was probably in the 930-960nm range, as that's pretty common for IR/NIR LED's

 

So if an EMP was set off near a computer system it would cause permenant and irreversable damage to the computer?

 

Looky what I found.

http://www.plans-kits.com/kits/

Great Lord. OK, there's equipment on there what could wreak major havoc. Gotta love the Internet. Friends, I admonish you; DO NOT DO ANYTHING STUPID...like get caught...

 

I've always said you can get anything on the internet. This just proves it!

 

So if an EMP was set off near a computer system it would cause permenant and irreversable damage to the computer?

If an EMP were strong enough, yes. a weak EMP pointed at a computer that's turned on and running could cause a severe malfuction, scrambling the contents of RAM, and temporarily sending fake signals to the processor and hard drive.

a strong, focused EMP at close range, would destroy almost any electronic device, from an analog battery powered wristwatch to a supercomputer.

The biggest of homebrew EMP "bombs" could take out every electronic device present on entire city blocks. (within 1000 of yards of the epicenter of the EMP blast). In some cases, the EM Signal could even travel through power lines present "in the zone" and cause peripheral damage to nearby sub-stations or power plants. What's scary is that a savvy individual could build one of these for a few thousand dollars, if not mere hundreds!

The grand-daddy of them all would be much like the EMP satellite featured in the 1990's James Bond Movie: 007 Goldeneye.

 

Ok, I understand what you'd do with the slot machine thing but what would you need a short range EMP for? That site is pUnK

Destroy a computer, zap someone's cellphone (movie theater anyone?) maybe use it on your alarm clock instead of hitting snooze? the uses are almost infinite!

Gotta get me one of them for the movie theater!

It would also be funny to kill your computer at work when you think its time for an upgrade but they're too cheap to replace your old POS.

 

The grand-daddy of them all would be much like the EMP satellite featured in the 1990's James Bond Movie: 007 Goldeneye

And they sell kits for those right