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Old Jan 14, 2013, 05:16 AM
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Hubsan X4 illuminated 1.0


Hubsan X4 illuminated 1.0


The Hubsan X4 is the smallest RTF quad on the market (yet).
Due to its size (or lack of) and colour it has a quite low visual profile.
So flying outside - where it belongs - it is really missing some navlights.

This is my simple solution, I took:
  • 4x 0603 LEDs: 2x blue, 2x red
  • 2x resistors: 1x 22 Ω, 1x 47Ω
  • 32 gauge magnet wire

Soldering the 0603 LED was a pain in the **s


Wired according to following pictures:


The result surpassed all expectations:


-mike-
Last edited by mikefromgermany; Jan 14, 2013 at 07:15 AM.
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Old Jan 21, 2013, 08:27 AM
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Well done Mike! Could you post where you got your parts?

Thanks!
Old Jan 21, 2013, 08:33 AM
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Originally Posted by davidevo50 View Post
Well done Mike! Could you post where you got your parts?

Thanks!
Ebay.
search terms: "0603 LED", "resistors", "magnet wire"

-mike-
Old Jan 27, 2013, 08:32 PM
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are these SMD 0603 LED ? like these?

http://www.ebay.com/itm/50-SMD-0603-...item19bafc93b2
Old Jan 28, 2013, 12:18 AM
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Originally Posted by Globel View Post
are these SMD 0603 LED ? like these?

http://www.ebay.com/itm/50-SMD-0603-...item19bafc93b2
Yes, they are. If you are unsure to solder these - try getting prewired SMDs like these:
http://www.ebay.com/itm/10x-SMD-LED-...item5650cd2fee

-mike-
Old Jan 29, 2013, 04:43 PM
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Originally Posted by mikefromgermany View Post
Yes, they are. If you are unsure to solder these - try getting prewired SMDs like these:
http://www.ebay.com/itm/10x-SMD-LED-...item5650cd2fee

-mike-
Great find mike!!! I looked into your "simple wiring" pic but cant' really understand it. I' m looking for an easier setup since I'm a total noob with LEDs and resistors. Do you think I could use these : http://cgi.ebay.fr/ws/eBayISAPI.dll?...84.m1423.l2649
http://cgi.ebay.fr/ws/eBayISAPI.dll?...84.m1423.l2649
hook them up in series with this resistor http://cgi.ebay.fr/ws/eBayISAPI.dll?...84.m1423.l2649 ?
I' ve looked at a couple videos on how to hook those things up but I need to keep it very simple for now even If some LEDs are dimmer it doesn't matter
Old Jan 29, 2013, 05:10 PM
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Originally Posted by ogrope1 View Post
Great find mike!!! I looked into your "simple wiring" pic but cant' really understand it. I' m looking for an easier setup since I'm a total noob with LEDs and resistors. Do you think I could use these : http://cgi.ebay.fr/ws/eBayISAPI.dll?...84.m1423.l2649
http://cgi.ebay.fr/ws/eBayISAPI.dll?...84.m1423.l2649
hook them up in series with this resistor http://cgi.ebay.fr/ws/eBayISAPI.dll?...84.m1423.l2649 ?
I' ve looked at a couple videos on how to hook those things up but I need to keep it very simple for now even If some LEDs are dimmer it doesn't matter
the LEDs look fine. using 470 Ohm resistors the LED will not even glow.
stay with the values I wrote if you hook up each colour parallel.

if you want to use 4 resistors - so for everysingle LED one you will need:
for the red LED: 82 Ohm 1/4 or 1/8 W
for the blue one: 40-47 Ohm 1/4 or 1/8 W
cheap carbon film resistors are sufficient.

Hope this helps
-mike-
Old Jan 29, 2013, 05:48 PM
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Mike, is there a perticular value for the resistor used for a white led?

Thanks again

David
Old Jan 29, 2013, 06:09 PM
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Originally Posted by davidevo50 View Post
Mike, is there a perticular value for the resistor used for a white led?

Thanks again

David
Should be the same as for the blue ones.
You may calculate it for yourself:
http://led.linear1.org/led.wiz

BTW - some useful reading, there, too

-mike-
Old Jan 29, 2013, 06:39 PM
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Cool, thanks!
Old Jan 29, 2013, 08:13 PM
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Originally Posted by mikefromgermany View Post
the LEDs look fine. using 470 Ohm resistors the LED will not even glow.
stay with the values I wrote if you hook up each colour parallel.

if you want to use 4 resistors - so for everysingle LED one you will need:
for the red LED: 82 Ohm 1/4 or 1/8 W
for the blue one: 40-47 Ohm 1/4 or 1/8 W
cheap carbon film resistors are sufficient.

Hope this helps
-mike-
Superb, many thanks!!!
Old Feb 14, 2013, 11:43 PM
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Hey Mike,

I have harvested a white LED from a Mini-Pet arm, and want to use it as a tail light for my X4. On the MP it plugs right into the FCB, but I'm thinking there might be resistance built into the FCB to handle it properly.

I did a quick test on a spare battery I have and the LED lit up nice and bright, but I think I might be over driving it like that.

Do you know if I need a resistor for this LED? If so, is it an ~47Ohm resistor that I need?

I'm not sure how to confirm the specs on this LED. I have a DMM if there is any way for me to test it to figure it out.

Name: X4 Tail Light LED.jpg
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Thanks,
Jason
Old Feb 15, 2013, 02:35 PM
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Originally Posted by jason4207 View Post
.... Do you know if I need a resistor for this LED? If so, is it an ~47Ohm resistor that I need?
I'm not sure how to confirm the specs on this LED. I have a DMM if there is any way for me to test it to figure it out.
Thanks,
Jason
Hi Jason!
White LED need a forward voltage of 3.0 - 3.4 V @ 20mA
If you do some calculating here
you get values between 39 and 47 Ohms.
I prefer the higher value if I'm in doubt - the 47Ohm resistor will allow your LED to burn bright and fade a LITTLE the last 2 minutes until LVC.
to check take your DMM and get the real current of your actual resistor/LED/batt combination. It should not be much over 20mA with fresh charged batt.

-mike-
Old Feb 16, 2013, 04:25 AM
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Thanks Mike! I used the calculator already, but wasn't sure if the extra resistance might be built-in to this particular LED. I assumed it was built into the MP FCB, but wanted to be sure.

I was contemplating...Since the MP has white LEDs on 1 side and red/blue flashing LEDs on the other I thought that you might be able to switch them w/o any problems...basically the extra resistance/smarts would be built into the LED so that you could swap them to any corner to suit your taste w/o having issues. If it's built into the FCB I don't think that would be possible.

What do you think?
Old Feb 16, 2013, 05:37 PM
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Originally Posted by jason4207 View Post
Thanks Mike! I used the calculator already, but wasn't sure if the extra resistance might be built-in to this particular LED. I assumed it was built into the MP FCB, but wanted to be sure.

I was contemplating...Since the MP has white LEDs on 1 side and red/blue flashing LEDs on the other I thought that you might be able to switch them w/o any problems...basically the extra resistance/smarts would be built into the LED so that you could swap them to any corner to suit your taste w/o having issues. If it's built into the FCB I don't think that would be possible.

What do you think?
The FCB will regulate the current needed - there are no regular LEDs with inbuilt resistors.so simply swapping the leds over shouldn't make problems. As you have a DMM - just try and read the current - itīs part of the fun

-mike-

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