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LED SCANNER? Answered

Does anyone have any informational sites and or plans to wire up leds to scan back and forth like on the knight rider car?

Tags:LEDDIY

25 Replies

user
autoflow (author)2008-02-17

Ok so i decieded to go with this plan.
Led chaser
This is the first time i will be doing anything like this Where do you guys shop for your parts? the few sites i did find gave me pages of results when i typed in the parts listed and i didnt know which to pick.

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user
techxpert (author)autoflow2011-07-30

go to http://www.futurlec.com/index.shtml really good

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tech-king (author)autoflow2008-02-18

goldmine electronics if you shop online. in montreal, the only place is active electronics near highway 15. that circuit is far more complex than mine. besids the ability to vary blink rate, it will be more complex. plus, you really should check the laws on this sort of thing if you want to attach it to a car.

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autoflow (author)tech-king2008-02-18

Thanks. Im in new jersey. Im not 100% sure but i believe as long as your not driving with the lights on their legal. That and im noticing the cops bother you alot less as you get older.

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nthmost (author)2010-09-07

I put together a kit like this last night at a circuit hacking workshop. It was 555 / 4017 circuit as tech-king above suggested.

The kit's called "the Retro Scanner" -- you can find it here:

http://appliedplatonics.com/scanner/

You could take this basic circuit design and expand it out to the size of LED scanner / chaser you wanted. The schematics are all on that site. Pretty simple.

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clights (author)2011-06-24

I have noticed some of you are looking for led scanners. You can check out http://www.amxauto.com/security-leds-led-scanners.html

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knightrider2000 (author)2008-09-21

hello email me for info tom62@gmx.com

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autoflow (author)2008-01-29

Thanks guys lots of helpful info. Ive never done anything like this so if your input helps me to do this that would be awesome.

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guyfrom7up (author)autoflow2008-01-29

well, you could use something like an arduino (I have a boarduino and I love it, I'm asking for a big breadboard for my birthday, my tiny radioshack board isn't working out at all).

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tech-king (author)guyfrom7up2008-02-01

a large perfboar is a nice gift. i dont have any. im hoping to get some before the end of the led challenge, because i'm too lazy to etch a pcb. radi-sh*t sell really lousy perfboard. so, guyfrom7up, do you still want the circuit?

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guyfrom7up (author)2008-01-29

if you really wanted to couldn't you come up with a clever schematic that uses caps for timing, resistors for limiting current, and a couple more transistors than leds to make something like that if you couldn't get those ics?

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tech-king (author)guyfrom7up2008-01-30

i can do one better; i have a circuit that pulses the led when the capacitor discharges. i can post it when i get home. (im at school now) oscars comment: his school sucks. plus, the proffesor was absent, so im sitting on the desk uselessly.

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autoflow (author)2008-01-29

LEDS that move back and forth. I do ultimatly want to apply it to a car like in the tv show. I also have very little expierence with this so im planning to google any of your answers and teach myself.

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NachoMahma (author)autoflow2008-01-29

. Don't know for sure, but I'll bet one $US that they are illegal on the street. Especially if they are red or blue.
. tech-king 's 555 will be the simplest and cheapest approach, but guyfrom7up 's uC is more flexible if you would like to have different patterns/sequences.

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tech-king (author)NachoMahma2008-01-29

555 and 4017. otherwise yeah.

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Goodhart (author)tech-king2008-01-29

The cmos decade counter ? they are fairly straightforward using the Spec sheet (pdf)

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tech-king (author)Goodhart2008-01-30

it think so. the 4017 os a calculator chip.

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NachoMahma (author)tech-king2008-01-29

. Picky, picky, picky. LOL

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tech-king (author)autoflow2008-01-29

use a 555 timer, a 4017 calculator, a 1 uf cap, and i forgot the resistor value. this allows one led to turn on, then it goes out and the next one goes on. ill look up the diagram later.

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uguy (author)2008-01-29

google "knight rider led circuit" and I think you'll find just what you want.

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guyfrom7up (author)2008-01-29

you could just use a micro controller.

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tech-king (author)guyfrom7up2008-01-29

use a 555 an 4017 ic. and a capacitor and 2 resistors.

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tech-king (author)2008-01-29

do you mean leds that pulsate/dim or that move on the scanner lamp bar?

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