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TOPIC: Help with LED'S
Help with LED'S 1 month 1 day ago #64625
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Hello everyone,
Right now I am in the middle of my saber build but I have struck out. I allready created a tri-cree (RED) parallel LED unit. But I am kind of stuck to my battery. The voltage I can get for batteries are around the 3,7V catagory but the Amps they put out differ. Does this matter? Per example I could wire in a 3,7 Li-ion battery in with a 1.0 ohm resistor. But would a 4amp battery behave differently to a 6amp battery (please don't mind the numbers on the amps. Just shooting some numbers here). Please help a dude out :< |
Help with LED'S 1 month 1 day ago #64676
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That's just the *maximum* rated current draw.
The Tri-Cree LED (and any LED, really) will only draw the ~3A+ it wants, so long as you use the right resistor. The 4A battery might not suffice though, since the LED will be pulling close to 4A on a fresh battery (4v+) with your current resistor and won't drop down to 3A until the battery voltage hits nominal 3.6-3.7v. You'll either want a larger resistor or that 6 amp battery. Really though, even an affordable Trustfire 18650 (from a reputable seller) should be able to handle 5A before the protection circuit kicks in. |
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The following user(s) said Thank You: Aaargh
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Help with LED'S 1 month 15 hours ago #64704
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Help with LED'S 1 month 14 hours ago #64710
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You really don't want to be using a buckpuck in a modern lightsaber anyway, so no worries there.
I haven't tried the blue-label trustfires yet, but the ones I have on-hand (black-with-fire-label) have run Tri-Cree Reds no problem. I've even run a 5-LED crossguard at a combined 4A+ using them. I've no experience with that specific Panasonic cell either. For small parts like Resistors, you might want to check The Custom Saber Shop. There's a cheaper international shipping option for small parts that's not listed on the site, but is available if you email Tim directly. |
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The following user(s) said Thank You: OvrcAHst
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Help with LED'S 1 month 14 hours ago #64712
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Kouri wrote:
There's a cheaper international shipping option for small parts that's not listed on the site, but is available if you email Tim directly.
 Ooh! Handy to know. 
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Help with LED'S 4 weeks 2 days ago #64827
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Right I think I got it all figured out. I have most of the material in house including some 5 watt 1 ohm resistors (company said they were out of 3 watt and ''upgraded'' for free).
I tried to wrap my head around it and tried to make a diagram on how I should wire it. It's a really simple project but I really don't want to mess it up  Is the following image correct?
Warning: Spoiler!
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