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Old Jan 08, 2013, 12:05 PM
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Philippines, NCR, Quezon City
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Do you need separate battery for your LED lights?!

Hi!

I run my hexcopter with 3s. My LED lights requires 12v. I only have 2 strips (around 25- 30 LEDs). I'm worrying if i will get lower flight time when i run this using the same battery pack. I know that LEDs have very low wattage.. so i'm not sure if i will notice the difference.

Need help! Thanks!
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Old Jan 08, 2013, 01:05 PM
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United States, WA, Seattle
Joined Dec 2012
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Originally Posted by DYORD View Post
Hi!

I run my hexcopter with 3s. My LED lights requires 12v. I only have 2 strips (around 25- 30 LEDs). I'm worrying if i will get lower flight time when i run this using the same battery pack. I know that LEDs have very low wattage.. so i'm not sure if i will notice the difference.

Need help! Thanks!
Even assuming they are about 0.2 W each (which is REALLY bright, probably more than 5x how bright they actually are), you'd only be using about 6W total, which likely won't make more than a 1 or 2% change in battery life.
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Old Jan 08, 2013, 01:15 PM
Flying R/C since 1964
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United States, IL, Chicago
Joined Sep 2004
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Quote:
Originally Posted by DYORD View Post
Hi!

I run my hexcopter with 3s. My LED lights requires 12v. I only have 2 strips (around 25- 30 LEDs). I'm worrying if i will get lower flight time when i run this using the same battery pack. I know that LEDs have very low wattage.. so i'm not sure if i will notice the difference.

Need help! Thanks!
I tested mine - nearly 2m of LED ribbon. Consumed 13mA.h of charge per minute, about 5% of what the motors consume.
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Old Jan 08, 2013, 01:49 PM
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Originally Posted by kallend View Post
I tested mine - nearly 2m of LED ribbon. Consumed 13mA.h of charge per minute, about 5% of what the motors consume.
If the calculations I just did in my head are right, that's around 9 watts or so of power, which would be around 4.5W per meter. Not quite sure how many they put per meter, but for my estimates to be correct, that's around one ever 4cm (which isn't really that much when I think about it). Still, how bright are those LEDs? Because a thing of LED strips that bright could almost be used as a flashlight.
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Old Jan 08, 2013, 03:04 PM
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United States, IL, Chicago
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Originally Posted by sodaant View Post
If the calculations I just did in my head are right, that's around 9 watts or so of power, which would be around 4.5W per meter. Not quite sure how many they put per meter, but for my estimates to be correct, that's around one ever 4cm (which isn't really that much when I think about it). Still, how bright are those LEDs? Because a thing of LED strips that bright could almost be used as a flashlight.
They aren't the super bright LEDS.

I also bought 2 (1 red, 1 white) very bright LED flashers from the local bike store. They are designed to strap on to handlebars or seat pillars (thin silicone rubber straps). Very light, include switch and long life battery, mount easily to the bottom plate. Can see them from long way off.
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Old Jan 08, 2013, 07:19 PM
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Philippines, NCR, Quezon City
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Thanks.... I only have two 5" strips for the front arms. Now I'm thinking of putting some more if that won't cost me 1min. of my flight time.
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Old Jan 15, 2013, 12:13 AM
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United States, TX, Arlington
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Anyone have details on how to wire the LED Flasher?
Ive seen notes that you have to add a resistor and a NPN transistor, but the details on what type of resistor and transistor plus the configuration of the wiring has me confused (what leads plug where).
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Old Jan 15, 2013, 08:12 AM
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I bought 12volt led strips from a motorcycle shop nearby. As long as you use 3s (12.6v when fully charged) battery, you can solder it parallel to the battery.
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Old Jan 15, 2013, 08:29 AM
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Originally Posted by DYORD View Post
I bought 12volt led strips from a motorcycle shop nearby. As long as you use 3s (12.6v when fully charged) battery, you can solder it parallel to the battery.
Yeah, I that's the easy way, but I would like to be able to toggle on and off via TX. I understand the code, just not the proper connections. It's not very well documented.
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