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#1
04-02-2012, 05:39 AM
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Electronics Question
So I am cheap and adventurous and want to try and build some led turn signals. Ever seen those scrolling led turn signals ambulances have? Like this
http://www.ilfireandpoliceequip.com/...gnal-p443.html I can't afford $160 though for turn signals though. So this is where I appeal to the collective mind here and ask, what sort of parts would I need to find to cause the individual rows to light up and stay lit one after the other until the whole array is lit and the process starts over. Also it needs to be done in the short amount of time that the flasher is sending power to the light. I have some ideas how but don't know enough to be sure. If I figure out how to do this I would put it all on perf board.
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Nathan KD9ARL μολὼν λαβέ 1978 XS1100E K&N Filter #45 pilot Jet, #137.5 Main Jet OEM Exhaust ATK Fork Brace LED Dash lights Ammeter, Oil Pressure, Oil Temp, and Volt Meters Green Monster Coils SS Brake Lines Vision 550 Auto Tensioner In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing. Theodore Roosevelt 
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#2
04-02-2012, 06:35 AM
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Check these guys out, I think they will have something you can use that will be pretty much a plugnplay thing. If you were to try and go out and buy all the LED's and controls individaually, it would cost much more and then it would drive you nut's getting everything to work propperly. I had a tail/brake/turn unit on my Speedmaster that I got from them and it worked like a champ. All I had to do was connect the bike's wires to the unit I got from them and wala. http://www.customdynamics.com/knight..._light_bar.htm
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Can't beat the smell of gas & oil
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#3
04-02-2012, 06:39 AM
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How many rows are you wanting to animate? You could go with multiple 555's in a series of CR circuits with each one powering the next. But, if you have more than a few stages, it would be a PITA. I am sure there is a much simpler solution, though.
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'81 XS1100 SH Melted to the ground during The Valley Fire Sep. 12th 2015 RIP
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#4
04-02-2012, 07:09 AM
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I was thinking at least 10 rows, maybe more depending on what that looks like and brightness. Some of the rows could be connected I guess, never thought of that.
Cost wise, leds with solder leeds and diodes, transistors, resistor are cheap. If I spent $50 to make 2 I would be surprised. Time and frustration that's free 
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Nathan KD9ARL μολὼν λαβέ 1978 XS1100E K&N Filter #45 pilot Jet, #137.5 Main Jet OEM Exhaust ATK Fork Brace LED Dash lights Ammeter, Oil Pressure, Oil Temp, and Volt Meters Green Monster Coils SS Brake Lines Vision 550 Auto Tensioner In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing. Theodore Roosevelt
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#5
04-02-2012, 10:14 AM
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This guy: http://www.youtube.com/watch?v=irntF...feature=relmfu ...has done what I think you're trying to do, but if you look at his setup, he's got quite a bit of 'stuff' to do it...
He's got multiple videos showing different versions. I'm sure those commercial models you're looking at have purpose-built ICs for drivers which is why they cost what they do.
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Fast, Cheap, Reliable... Pick any two '78E original owner - resto project '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire '82 XJ rebuild project '80SG restified, red SOLD '79F parts... '81H more parts... Other current bikes: '93 XL1200 Anniversary Sportster 85RWHP '86 XL883/1200 Chopper '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project Cage: '13 Mustang GT/CS with a few 'custom' touches Yep, can't leave nuthin' alone...
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#6
04-02-2012, 10:22 AM
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Build it for $24
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Former owner, but I have NO PARTS LEFT!
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#7
04-03-2012, 05:27 AM
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Quote:
Quote:
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Nathan KD9ARL μολὼν λαβέ 1978 XS1100E K&N Filter #45 pilot Jet, #137.5 Main Jet OEM Exhaust ATK Fork Brace LED Dash lights Ammeter, Oil Pressure, Oil Temp, and Volt Meters Green Monster Coils SS Brake Lines Vision 550 Auto Tensioner In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing. Theodore Roosevelt
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#8
04-03-2012, 08:31 AM
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It all adds up
Quote:
um, $24 only builds you one, so it's $48 for the two red arrows at the rear. Or $96 if they make amber arrows for the front.
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Fred Hill, S'toon XS11SG with Spirit of America sidecar "The Flying Pumpkin"
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