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Old Jul 03, 2012, 06:56 AM
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Blanik 4801's Avatar
Czech Republic, Prague
Joined Aug 2011
14 Posts
Help with glostick lighting setup

Quote:
Originally Posted by UAVPilot View Post
The resistor value change with the forward voltage needed to make them shine at the required mAh draw , which is between 20 and 30 depending on how long you wan the light to last. I usually run mine at 25 mAh.

It is acceptable to run the LED's in parallel, and only use one resistor, but you will not be able to add more later and if for some reason one burns out, it will shorten the life of the others quickly. Also, if you have a different color LED that has a lower forward voltage then the others , like the red one's (red is usually 2.5 volts and white is usually 4 volts), you will have to calculate for an additional resistor to be put in front of the red one or it will be the only one that lights up since it would be the one with the least resistance. In other words , the resistance level has to be the same for all the LED's.

The Red glostick and the Green Glo uses this method with only one 5 ohm resistor for all six white light in the wing with and additional 30 or 40 ohm resistor in front of the Red LED's. It does work fine.

Hi UAVPilot (hope you still get messages to this tread) and others..

I really like the Glostick design and plan to build a few with my son, he needs a plane he could use alone... plus it's a great platform to learn building skills on. They maybe the first in the Czech Republic...

I am however a bit stumped re the lighting system - my understanding of all things electric is very limited.. i don't aspire to run pursuit modes or anything as complicated as that, what I would like is to have one group of LEDs in the fuse and one in the wing (each group consisting of same colour LEDs for simplicity).

I have looked at these calculators and they do make things a bit more clear BUT I have the following questions:

1) what do you use for the lighting system power and how do you connect to it/how many volts? The schema above says 5V, where does that come from?


2) I think I'll either use a permanent connection to a 2s LiPo's balancing port (7.4 V, right?)

3) or, if I can and find one, a small brushed ESC which will be controlled by a spare channel, either ON/OFF, or by the turn knob on my DX8 - now if I connect that to the 2s balancing port (I'd like to use a single battery, but if that shortens the flight time too much, I can use a small separate 2s), the input voltage will be 7.4 V and what about the output - when the appropriate channel is ON [this is the ON/OFF scenario] - is the voltage 7.4 V?

4) for the turn knob scenario - will it work if i just calculate the R's for the max voltage and the LEDs will gradually light up when I turn the knob from 0 to 100%, or will it result in the same situation (ON/OFF, only whethe calculation voltage is reached)?

I'd appreciate if someone with a more in-depth knowledge of these things commented/put me straight on those..

Of course I could just throw in one of those Turnigy LED strips, we can just about manage with those... but they're quite a bit heavier, plus I'd really like to tinker with the small LEDs and resistors ..

Thanks a lot for any comments

Matt
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Old Jul 10, 2012, 09:27 AM
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Joined Jan 2009
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1) what do you use for the lighting system power and how do you connect to it/how many volts? The schema above says 5V, where does that come from?

I am using the balancer connector of the LIPO (7.4v)
I use micro switches from CD-Drive and a servo turning those on off , but I use 4 switches (2-2 on both sides of servo)

Regarding the LED calculation, please provide exact type of the LED and how would you like to position them, what will be the voltage of the source and I will do a calc. with explanations.
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Old Jul 10, 2012, 05:13 PM
building building building!
aerophilia's Avatar
Melbourne Australia
Joined Jun 2006
5,103 Posts
I just used the white led strips from hobbyking. Easy to setup. But I learnt nothing about wiring up my own LEDs in the process! Either way you do it, it's a great plane to fly. Heaps of fun.
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Old Jul 12, 2012, 07:38 AM
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Blanik 4801's Avatar
Czech Republic, Prague
Joined Aug 2011
14 Posts
[QUOTE=
I use micro switches from CD-Drive and a servo turning those on off , but I use 4 switches (2-2 on both sides of servo)

Regarding the LED calculation, please provide exact type of the LED and how would you like to position them, what will be the voltage of the source and I will do a calc. with explanations.[/QUOTE]

Thanks, I've already figured how to use the online calculators for the resistors... the switches look interesting, but all that plus a servo is probably more weight than a small brushed ESC?

Good to know there's an alternative, though, will have to take a CD ROM drive apart to see what's on offer..

M
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Old Oct 22, 2012, 05:51 PM
WVCOUNTRYBOY
wvcountryboy's Avatar
United States, WV, Beckley
Joined Oct 2012
12 Posts
are there tiled pfd plans for this plane looks like a good first build ... thanks
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Old Oct 23, 2012, 03:03 AM
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thnilsen's Avatar
Norway, Hordaland, Os
Joined Nov 2004
337 Posts
Quote:
Originally Posted by wvcountryboy View Post
are there tiled pfd plans for this plane looks like a good first build ... thanks
Can't remember if there is a tiled PDF, but if you download the full sheet PDF you can tile print it using Adobe Reader X (v10).

- Thomas
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Old Oct 29, 2012, 10:35 AM
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USA, MA, Worcester
Joined Oct 2008
221 Posts
Post #12 has a zip file that contains full page plans and tiled plans.

http://www.rcgroups.com/forums/showp...8&postcount=12
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Old Dec 17, 2012, 06:57 PM
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Joined Jun 2012
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Sorry to bring up an old thread, but I need a little help picking out a motor for this plane. Made mine from $tree foam, came out with a AUW of 230 grams less the motor and esc yet to be selected. Anyone know the thrust/watts to lb./kg that this model is designed for or is known to fly best at?

Thanks,
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Old Dec 20, 2012, 06:51 PM
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Joined Jun 2012
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Hi all,

Thanks UAVPilot for this great set of plans and instructions!

Finished mine today, the smaller version built entirely of $tree foam AKA Reid-board and 1/8 plywood. 1/8" carbon tubes were used for the LE spar and elevator. Tail skid, rudder hinge, and UC rubber band posts were made from bamboo skewers apx.2.5 mm in diameter.

My set up:

hexTronik 24gram Brushless Outrunner 1500kv
HobbyKing Red Brick 10A ESC
Glow In The Dark 8x4 Propellers
4x Hobby King 4.3g / .5kg / .10sec Micro Servo
7g 6ch 72mhz rx
Turnigy nano-tech 460mah 3S 25~40C Lipo Pack

To power the LEDs I created four circuits. Two circuits in the wing with 4 red LEDs, one for each wing half. Two circuits in the fuse, one with three white LEDs, and a single red LED for the tail. Both pairs of circuits terminate with a male JST connector. I connect the circuits into a y harness with two female JSTs on one end and a 3s balance plug on the other.

I found these products really helpful:

Super Light Multi Spoke Wheel D40x11mm
http://www.hobbyking.com/hobbyking/s...der=2005663884

Carbon Fiber Landing Gear 100mm
http://www.hobbyking.com/hobbyking/s...idProduct=4502
Tip: Join these using three layers of 1/8 ply or sandwich 1/8 balsa and two ply layers. Use epoxy.

Unilateral Hinge 5x3x20
http://www.hobbyking.com/hobbyking/s...idProduct=8857
Used for the rudder.

Linkage Stopper M3x2xL11.2mm
http://www.hobbyking.com/hobbyking/s...idProduct=8519

Super Light Pivot & Round Hinges D2.5xW8xL33mm
http://www.hobbyking.com/hobbyking/s...idProduct=8598

M6 Nylon Nut
http://www.hobbyking.com/hobbyking/s...dProduct=17856

Nylon Screws 6x40mm
http://www.hobbyking.com/hobbyking/s...idProduct=8429

Nylon Washer
http://www.hobbyking.com/hobbyking/s...dProduct=12947

Control Rod/ABS Sleeve
http://www.hobbyking.com/hobbyking/s...dProduct=13036

JST-XH Parallel Balance Lead 3S 250mm
http://www.hobbyking.com/hobbyking/s...dProduct=27072
I harvest the female 3s plugs from this.

AUW came out to 274.6 grams.
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Last edited by Curins; Dec 29, 2012 at 07:27 PM.
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