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moody
Mad Scientist
USA
326 Posts |
 Posted - Jun 19 2004 : 11:45:30 PM
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ok i have a 1980 puch moped
but it didn't have any turn signals when i got it
i would love to make some but don't know how
the lights need to:
1) be seen in daylight
2) run off 6volt AC
im thinking LED Lights(light emitting diodes)
help me
David S |
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n/a
DELETED (Inactive)
56 Posts |
Posted - Jun 20 2004 : 02:50:44 AM
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AC and LEDs may not get along the best, but with a rectifier, why not.
If you're using high brightness LEDs, (I have a couple hundred red ones rated at 5000 mcd) you can probably wire a half dozen in series off of a 6V driver, the only problem then being the flasher circuit. A 555 timer circuit at about 1.5 Hz works well, and will run on 6VDC easily. It should also drive 20mA or so (needed to fire the LEDs) without much problem.
Of course standard 6V automotive equipment DOES exist, and it's also possible to use a voltage doubler (Because it's AC) to get 12VDC, which makes the problem more similar to other ones already posted.
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moody
Mad Scientist
USA
326 Posts |
Posted - Jun 20 2004 : 11:35:33 AM
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i don't like to load up car equipment on my ped because there are not many places for it
but if its small no problem
but i think i have to use yellow for the turnsignals
there might be a law on that ill check it out
David S |
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moody
Mad Scientist
USA
326 Posts |
Posted - Jun 20 2004 : 11:38:30 AM
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nope
i can use red LEDs
and i must use those high intensity types
David S |
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n/a
DELETED (Inactive)
56 Posts |
Posted - Jun 21 2004 : 12:16:51 AM
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Doesn't really matter the color. LEDs in red or yellow are easy to come by on eBay. :)
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moody
Mad Scientist
USA
326 Posts |
Posted - Jul 24 2004 : 5:34:21 PM
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"the only problem then being the flasher circuit. A 555 timer circuit at about 1.5 Hz works well"
is the 555 timer circuit on this site?
and can someone make a wiring diagram for this circuit?
David S |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 26 2004 : 08:52:08 AM
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If you grab the datasheet for the 555 (or the application notes), there are many examples of a circuit like this. Also, check out the LM3909 IC. It's no longer produced, but it was made specifically to flash LEDs. If you want to simplify even more, they make flashing LEDs with the flashing circuit integrated. But it will be difficult to syncronise them.
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moody
Mad Scientist
USA
326 Posts |
Posted - Jul 26 2004 : 10:12:26 PM
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just got some turn signals at www.mopedarmy.com for $20
David S |
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6 volt AC turn signals
