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My DIY Kino-Flo Select Style LED.


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#1 Chanon Wangtrirat

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Posted 29 September 2017 - 11:59 PM

Hi! There I'm Thomas.

 

In the past 2 years I have made Dive like LED fixture posted here http://www.cinematog...862#entry427134

 

11006401_10206364071571626_7143621086673716075_n.jpg

 

It's made out of Off-shelf LED strip contained Horrible warm-white LED and RGB LED. The output is low because I have to use Red LED to correct there poor color rendition to such just usable but it's very versatile and fast to use because of RGBW type ability to change color. As it is made before any of Celeb or Skypanel debut at that time. I can see the potential of this kind of fixture features.

 

Now it's 2017. The High CRI LED comes surprisingly cheap. All LED products are freaking cheap. 

 

This is XineLED Apollo I named it because it's pretty bright. Consumed 288w (opposed to Skypanel nominal 400w I won't going to fight). It brighter even 4x4 bank and most of Celeb and Select.

 

22050043_10214703895822020_2452873306769

 

22049789_10214704002344683_7213597496871

 

It's Light head + PSU 360W from Meanwell 24V 

 

I use Arduino DUE to control the intensities of multiple channels, RGBW.

 

DUE-3.jpg

 

the Arduino DUE can control PWM modulation in 12bit resolution at 20KHz which plenty of room to prevent the flicker problem. It may cause some trouble with High-speed more than 300fps but hey! 288w won't suite for that job right?

 

12 bit pwm dimming means precise control of intensity up to 0-4095 level of brightness.

I write the code which set the white balance in 12bit of 4 channels and then rotary encoder will feed the dimming level and calculate level output each channel should lit. So it's more precise than 8bit 0-255. But this is for internal calculation only.

 

The Code is not fully complete I just barely use just 5500K preset as I can't write the menu system for LED/OLED yet. I will hire someone to program it.

 

The Panel consists of 30m of LED Strip ( 15m for Warm-white and 15m for RGB). 

 

The housing made of plastic and aluminum bezel with Very good quality diffuser It's all from Troffer LED panel which I bough from home depot here in Thailand.

 

one with LED at the back of it not the edge. Then I removed all crap original LEDs.

 

 

 

40w-led-panel-light-1x4.jpg

 

22047750_10214703895102002_1174291752897

 

I planned to go for Constant current version of strip soon because normal one use resistor to drive the chip, It's inefficient.

 

22046694_10214703896102027_4395445688302

 

Here some pics from testing it on bench.

 

22089036_10214703895062001_2311270175627

 

Housing finished the side with durable plastic document folder and big cable tiles. It's pretty durable. Flexible conduit I used large copper cable instead.

 

22046535_10214703895382009_5275505403284

 

Some scene put to use with 3200K preset (just write analogwrite code on arduino).

 

22046572_10214703896462036_5609322182098

 

 

Aquablue with few lines of code make straightout sci-fi look.

 

21430101_10214703896222030_6857488487156

 

 

Here is short video test the Magic lantern RAW at 3K featured XineLED Apollo in the room with Aqua blue. It's ability tune the color because it's RGBW.

 

 

Thanks for all comments. I would love to see your appreciation.


Edited by Chanon Wangtrirat, 30 September 2017 - 12:05 AM.

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#2 JD Hartman

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Posted 30 September 2017 - 06:36 AM

Nice build.  Some way to skirt the end of the panel would be useful.  Some type of clip to hold a piece of black Coroplast would be nice.


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#3 Phil Rhodes

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Posted 30 September 2017 - 10:21 AM

Nicely done. Where's that constant-current strip come from?


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#4 Chanon Wangtrirat

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Posted 30 September 2017 - 02:36 PM

Nicely done. Where's that constant-current strip come from?

 

The first resistor current limiting strip I used is here. https://www.aliexpre...2311.0.0.CX7hVw

 

The Constant current I bought from here. https://www.aliexpre...2311.0.0.CX7hVw

 

I have already test the constant current one. 90' CRI LED.  It's somewhat have little greenish tint to it. Which I think easier for me to correct with RGB LED, Green one have such poor power compare to blue or white LED. 

 

And the RGB I found here. But I haven't bought it yet. It just very new in market. http://www.addressab...-LED-Strip.html

 

There're some spec that I'm concern. The RGB one is the most serious one. The Apollo made out of RGB strip which have not deep enough blue LED. It's fall in light blue region. Made it after calibrate to the camera seem to be greenish on eyes. I will test one before purchase multi-meters for making another one. 

 

I have plan to buy C-700 for evaluation soon. for Scientific measurement.


Edited by Chanon Wangtrirat, 30 September 2017 - 02:39 PM.

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#5 Salim Madjd

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Posted 02 October 2017 - 06:11 PM

Thanks for sharing this...it reminded me of this product, which I found very interesting: https://www.bhphotov..._on_camera.html

I wonder if you're able to get your solution to this level but with a larger panel and softer light source of course. Please keep us informed of your progress. 

 

I know a bit about coding, I wonder if there is something I can help with. 


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#6 Phil Rhodes

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Posted 02 October 2017 - 06:16 PM

Usually this sort of thing is quite simple to scale. Chanon?

 

P


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#7 Chanon Wangtrirat

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Posted 04 October 2017 - 04:06 AM

Thanks for sharing this...it reminded me of this product, which I found very interesting: https://www.bhphotov..._on_camera.html

I wonder if you're able to get your solution to this level but with a larger panel and softer light source of course. Please keep us informed of your progress. 

 

I know a bit about coding, I wonder if there is something I can help with. 

 

 

Oh! Thank you. Really cute little light with such tons of functions. I afraid that modding it to drive larger panel don't really work the way it should because it have to be calibrated. But at least I get some idea for the interface. ESP32 inside for sure.

 

 

Usually this sort of thing is quite simple to scale. Chanon?

 

P

 

 

Yes. But not that easy.


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