Wanting to test home built lidar jammer

[Solion]

It has been a while but I am wondering if there still is a group in or near Atlanta GA that I could test my little home brewed lidar jammer.

[Jstglockem]

Any Jpg's of it?

[ELVATO]

Pix or it didn't happen.

[Solion]

I will get some pictures of the unit here as soon as the resin hardens around the Jamming heads ( 6, 230mw Ir Leds 880nm ) I still need to pick up a project box
for the Pulse sweep generator.

I don't actually have a detector circuit for it yet. I plan to try and tie it into an cheap radar/lidar detector just to test. I figure if the Laser led lights on it I can pigtail off of it to fire the sweeper.

Just curious if 15 bucks+time has any effect at all on jamming a gun. the system as it is drives my current laser/radar detector nuts. so, Meh it may or may not work Just curious though.

I will get photos up as soon as I can. just I have a business to run and this has been a little side project from 2 years ago when I first posted here .

[bradthemad]

It has been a while but I am wondering if there still is a group in or near Atlanta GA that I could test my little home brewed lidar jammer.

We are around! category4 and M6D have the guns, and rsatmans can invite you into the Georgia Testers social group here.

[Solion]

Here are a couple of photos of the IR leds now suspended in alumalight resin casing Should be pretty rugged and waterproof to boot.

more photos to come as soon as I rebuild the pulse sweeper to fit something allot small than the breadboard.

Let me know when your next meeting is. It should be fun to see how big a FAIL this will be.

Solion

[Solion]

A little link to you tube videos of the head units actually working. I am actually hopeful some of my programming sweeps of various PPS might actually work. Instead of a solid stream of pulses, a sweeping or stuttering changeup of pulses may be the trick ( wont know till I test)

youtube(dot) com/user/thundolis#p/a/u/1/uvUgW7qA5d4

youtube(dot) com/user/thundolis#p/a/u/0/yOIfaRTLOgk


But the big thing is the shear burnination of my output. no they are not laser diodes but hell, the combination of output of all of them is.. epic? won't know if it means a thing till I get to test my mad science budget toy . Tell you this much. If it works I promise to post the schematics for everyone to enjoy.

There is something that has been grinding on my brain. I have to be honest here as I am a little confused about something and perhaps someone can set me straight on it. and it concerns the actual pulses from a lidar gun and what was told to me about the brand name expensive jammers.

Here is what I was told, the expensive units sense the lidar pulse then sends the same pulse (rate/width/time) back to the gun thus confusing it. Now I probly heard the sales guy wrong on this so feel free to correct me. But those pulses used and the rate they are emitted are the property of the lidar gun Manufacturer.

Scientific Atlanta cannot use the same pulse structure as lets say that of LTI (they would get sued) . So it stands to reason that neither can Blinder, Laser Star or anyone else recreate the pulse information EXACTLY because they would get sued. Now this is where it gets funkadelic as an engineer. Can I accidentally get sued for building my own toy? If by tweaking some programming and giving out what I find is a "best jam code " for my basement build of a lidar jammer.

I am not here to make any money. I am part of OSC (Open Source Circuits )
and wonder if I stumble on a jamming rate that works and give it away without knowing that it is the property of someone else. will I loose my home? Scary idea since all I wanted to do was make Lidar guns useless for 15.00 and a soldering iron.

Just questions from the world of maaaaaadd Sccciiieennceee

Solion

[The Chariot]

No, you can't get sued for single, personal use, with no profit motive, and no commercial connection at all, of a patented idea, in general terms. I am not a lawyer, and don't give legal advice. That's just my understanding of it based on reading a lot of intellectual property laws over the years (due to my line of work).

I don't think pulse rates are patentable. That would be akin to Ford patenting 55 mph. How a gun determines speed (specifically), how it detects JTG, its strengths, etc., those are patentable.

Now, looking at your videos, it seems you're on the right track. If you can get it to pulse back correctly (and that will be tough, because there is actually one brand which sends out one pulse rate then switches to another to fool older jammers), then it will work but its a matter of how well. In other words, you might need to add several more LEDs to each head, and keep adding until you get a number which works well at a significant distance.

[TSi+WRX]

Cool stuff!

I am no engineer, and I'm truly weak on the technicals, but I do wanted to wish you best of luck! This is definitely something to keep my eyes on!

[Eloi]

Great .

From the smallest seed grows the tallest tree

Just some ideas : using those clusters of ir leds
from night surveillance camera ?

Or cluster :

LED High Power Illuminators

L850-66-60 consists of 60 chips of 850 nm wavelength mounted in a TO-66 package.
L850-66-60-550 consists of 60 chips of 850 nm wavelength mounted in a TO-66 package assembled with a heat sink, lens and short wiring harness.

They have 810 nm cluster !

With cluster like those , your car will appear brighter than sun
to the laser's eye