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Farmer Joe · 10-12-2014, 10:29 PM

I'm sure you night flyers will know this.
I am using DELight starter kit to install nav lights on my 600 size scale. (Talon 90 esc, 6s lipos)
https://www.dimensionengineering.com...ht-starter-kit

This kit comes with SMD's which aren't suitable being square. I want to replace them with normal 3mm 10000 mcd LED's and need someone to check if 1W resistors are correct, and if I need them on all 6 lights.

2 lights on continuously - DELight controller ch 5 & 6
2 " Strobe. " ". 1 & 2
2 " Slow flashing. " " 3 & 4

Source V - 22v ( 6s lipos)
Forward V- 2.8 to 3
Forward C - 20 mA

Joe.

Farmer Joe · 10-13-2014, 02:09 PM

Seriously, no answers!?
I went with the 1W

kavic5150 · 10-13-2014, 03:14 PM

I'm not at all familiar with the Dimension Engineering product you mentioned.

In general you want to check with one of the online led resistor calculators. I never bothered to learn the math since I'm always near my computer whenever I'm soldering.

http://led.linear1.org/led.wiz

A 1 watt resistor just tells you how much current it can handle at a maximum. You'll need to know the resistor value your looking for as there are many options to choose from. 1 watt sounds excessive for a single led. I think you would be ok with a 1/4 watt resistor since it sounds like you'll be using one per led.

I looked around the DE website and didnt see any specs on that controller. I'm guessing it operates on whatever voltage you have going through your Rx to your servos i.e. 6v or 8.4v.

You might not need any additional resistors since the manual said it will adjust current for the led thats connected to it.

Also the forward voltage for a blue 5050 size led should be more or less the same as the forward voltage of a blue 3mm dome shaped "thru hole" led like the ones you mention. Only the current draw will change depending on the size of the led and number of chips in parallel. 5050 leds have 3 chips btw, but since they are wired in parallel the forward voltage does not change.

If you want to email DimensionEngineering I'm sure they would be glad to help you. Their customer service is excellent.

10-12-2014, 10:29 PM	#1 (permalink)
Farmer Joe Registered Users Join Date: Feb 2013	LED resistor size I'm sure you night flyers will know this. I am using DELight starter kit to install nav lights on my 600 size scale. (Talon 90 esc, 6s lipos) https://www.dimensionengineering.com...ht-starter-kit This kit comes with SMD's which aren't suitable being square. I want to replace them with normal 3mm 10000 mcd LED's and need someone to check if 1W resistors are correct, and if I need them on all 6 lights. 2 lights on continuously - DELight controller ch 5 & 6 2 " Strobe. " ". 1 & 2 2 " Slow flashing. " " 3 & 4 Source V - 22v ( 6s lipos) Forward V- 2.8 to 3 Forward C - 20 mA Joe.

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10-13-2014, 02:09 PM	#2 (permalink)
Farmer Joe Registered Users Thread Starter Join Date: Feb 2013	Seriously, no answers!? I went with the 1W

10-13-2014, 03:14 PM	#3 (permalink)
kavic5150 Banned User Join Date: Jan 2010	I'm not at all familiar with the Dimension Engineering product you mentioned. In general you want to check with one of the online led resistor calculators. I never bothered to learn the math since I'm always near my computer whenever I'm soldering. http://led.linear1.org/led.wiz A 1 watt resistor just tells you how much current it can handle at a maximum. You'll need to know the resistor value your looking for as there are many options to choose from. 1 watt sounds excessive for a single led. I think you would be ok with a 1/4 watt resistor since it sounds like you'll be using one per led. I looked around the DE website and didnt see any specs on that controller. I'm guessing it operates on whatever voltage you have going through your Rx to your servos i.e. 6v or 8.4v. You might not need any additional resistors since the manual said it will adjust current for the led thats connected to it. Also the forward voltage for a blue 5050 size led should be more or less the same as the forward voltage of a blue 3mm dome shaped "thru hole" led like the ones you mention. Only the current draw will change depending on the size of the led and number of chips in parallel. 5050 leds have 3 chips btw, but since they are wired in parallel the forward voltage does not change. If you want to email DimensionEngineering I'm sure they would be glad to help you. Their customer service is excellent.

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