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Returning - basically a newbie

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Steve Steve23/01/2018 09:41:12
4 forum posts

Hi,

Returning to flying and now building a big wing to carry a vertical camera system.

Currently building a 180cm (70&rdquo wing with a cheap Flysky 6ch tx/rx to control it.

Lots of questions I’m sure.

Cheers

Steve

David Ashby - RCME23/01/2018 17:20:55
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10789 forum posts
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Welcome back Steve smile

Don Fry23/01/2018 17:53:04
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2091 forum posts
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What are you snapping?

Steve Steve08/02/2018 14:34:52
4 forum posts
Posted by Don Fry on 23/01/2018 17:53:04:

What are you snapping?

Sorry about the delay in replying Don, I was away for work. Ultimately I am going to be monitoring vegetation with a downward-pointing Canon camera modified for near infrared.

First step see if I can still fly! I am in the process of building a simple 36" wing with just three channels to potter about and find my coordination. After that something larger, I currently have a 70" design on the board.

Cheers,

Steve

Denis Watkins08/02/2018 14:42:36
2390 forum posts
122 photos

In the olden days Steve, we just loaded up with 35mm infra red film and was trial and error

Anyways, 36" span 3 channel is not an easy size to practice with

4 channel with ailerons 60" span would be more stable to get your confidence

Peter Miller08/02/2018 16:07:46
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Is this big enough?

shoulder arms comp.jpg

Don Fry08/02/2018 18:36:14
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2091 forum posts
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Denis, bit intrigued, in a previous life, I used UV film for some jobs. I have a vague memory, physics lectures, that a glass lens stopped IR.

But Steve, you reveal like Mata Hari on a Friday night, animals at twilight, Dogging sites, archeology? Tell more.

Tom Sharp 208/02/2018 18:56:38
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2630 forum posts
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Dogging Sites, must remember to wear my sombrero when next out on the watch.

Denis Watkins08/02/2018 19:14:19
2390 forum posts
122 photos
Posted by Don Fry on 08/02/2018 18:36:14:

Denis, bit intrigued, in a previous life, I used UV film for some jobs. I have a vague memory, physics lectures, that a glass lens stopped IR.

I still have the gear Don, and you can still buy IR Colour Film

Even in the past, this was a very expensive pass time which was never justified

You had to keep accurate exposure notes, linked to lighting conditions, as you were making exposures against something you couldn't see

The lens had an IR filter on the front which you could not see through, and framing was a mystery too

The flash, at night was also filtered, and light could barely be seen coming from it

Images were disappointing, but very arty, and just sometimes, more by luck than design, I got acceptable " not of this planet " sunsets

Steve Steve08/02/2018 19:49:15
4 forum posts

Back in the day when I did 'wet' photography I could never afford the expensive Wratten filters and IR film.

Modern digital cameras are very sensitive to IR. There has to be a factory fitted filter over the CCD to block it or you'd get the ethereal pale trees etc. I have bought a 16mp Canon camera from eBay and I will dismantle it to remove the IR filter. Then fitting a different filter will allow me to get data that will allow for vegetation analysis of wetlands (NDVI). I am also testing small cameras on Raspberry Pi devices.

As to the 36” possibly it will be a bit skittish. I just happened to end up with that size while trying my new PWM controller and nichrome wire etc. I will bolt a small motor on there and give it a go. Apart from anything I'm re-learning lots about building wings!

Don Fry08/02/2018 20:14:13
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2091 forum posts
26 photos

Anyway, thank you Denis, I realise now I.have lived for decades thinking IR did not go through glass, but now realise that near IR does. far IR does not, having looked it up.

Still no reply from Steve and his projected vertical camara. Agog.

Steve Steve08/02/2018 20:18:55
4 forum posts

Here is the power supply for the cutter. A 0-30V 10A PWM motor controller and a volts/amps meter from eBay. Powered by a 6A 19V old power brick for a laptop it seems to work fine with 28 gauge nichrome wire.

pwm

 

Edited By Steve Steve on 08/02/2018 20:24:43

Edited By Steve Steve on 08/02/2018 20:25:04

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