DIY Ambilight
#1
Hello fellow XBMC/KODI users,

I just wanted to take a minute to share my DIY Ambilight project I completed a few weeks back. I spent several months researching ambilight systems and came across a great article by James Bruce over at MakeUseOF (http://www.makeuseof.com/tag/make-ambilight-60/). I followed James' suggestions with the exception of cutting the LED strips and folded the corners instead, this made the project much faster and reduced the frustration most would have with the soldering of the strips. Trust me soldering WS2812 LED strips is not easy. After a few weeks waiting on the parts and a day of installation and setup, its complete and we love it. And yes, I built the whole thing for under $60. Look at the comments at the bottom of his article and you will see where I posted links to buy the parts cheap. I placed the Arduino UNO and the 5v power suppy in an old wooden cigar box I had and it looks pretty good sitting on the shelf under my TV.

I'm starting on the next phase of my lighting, it's a WS2812 LED strip wrapped around the light fixture in the ceiling and is an extension of the strip
on the back of my TV. This will add additional ambience to the room. I'll follow up on that once I have it worked out.

I would love to hear from others that have done this or anything like it.

Don Hatcher
[email protected]
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#2
(2014-11-08, 08:46)metaplane Wrote: I followed James' suggestions with the exception of cutting the LED strips and folded the corners instead......

Good write-up and thanks for the link to the makeuseof site

Just wondering how easy was it to fold the corners of the LED strip?
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#3
Here is a pic of a piece I fold so you can see....

Just make sure you pay attention to the direction of the bend and only bend once.

Image


Also, I suggest using a spreadsheet to build your grid to layout the leds for Processing. If you need help with doing that part let me know. Its pretty easy after it all make sense...
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#4
Thanks for the picture, looks neat and much easier than soldering, my hands are not as steady as they were!!

No stranger to spreadsheets so will go that way too.
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#5
Hows does teh adruino get the color details?
I have a NUC running XBMC and connected to teh TV. Where does Adruino fit in?

Also can I use a RaspberryPi instead of Adruino?
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#6
The program Processing 2 runs on the PC to do screen captures, the color (screen captures) information is transferred to the Arduino via a USB cable and LED strip is connected to the Arduino to drive the strip.

https://processing.org/ - Processing to do screen captures
https://gist.github.com/jamesabruce/09d7...70ed37870c - James Bruces version of Ambilight ino
https://github.com/FastLED/FastLED - Arduino library to drive WS2812 strip
https://github.com/adafruit/Adalight/archive/master.zip - Adafruit Arduino library
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#7
Just a side note...

James did a great job explaining the method for doing this project. Although you really do have to read over it a few times for it to all make sense. I am more than happy to help anyone that wants to do this and is having problems. Give me a shout and I will do whatever I can.

Don
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#8
Great info here too http://forum.kodi.tv/showthread.php?pid=...pid1592840
If I have helped you or increased your knowledge, click the 'thumbs up' button to give thanks :) (People with less than 20 posts won't see the "thumbs up" button.)
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#9
nickr...

That is a great link, I read it a week or so ago.

suku...


I have yet to find a good way to use a Pi with Ws2812 LED strip... the Pi doesn't have the clock output to manage the strip. Plus the Arduino UNO is much cheaper. $9 USD from http://aliexpress.com

I built my system for $59.84 USD.

http://www.instructables.com/id/Build-yo...aspberry-/ is an Instructables page to build ambilight clone with a Pi, best estimate is around $150 USD. You have to be running XBMC/Kodi on the Pi for this to work.

I have a Pi and set it up with XBMC but took that off and made a web server out of it. Real cheap way to have a web server at home and not use any of your PCs. Plus I am in the process of working out details to use Pi as a Advertising Display System I am going to market. I have used PCs like a NUC for this purpose in the past but it's much cheaper to use a Pi for this purpose. Complete small profile webserver (Pi, case, HDMI cable, ethernet cable and 32G sdcard for $75 USD... hard to beat.
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#10
http://www.tweaking4all.com/home-theatre...11-ws2812/

Another howto.
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#11
http://www.amazon.com/L-shape-4-conducto...d_sim_e_15

And a solution to bending.
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#12
(2014-11-14, 23:42)metaplane Wrote: Plus the Arduino UNO is much cheaper. $9 USD from http://aliexpress.com
Does the Uno have enough memory?
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#13
(2014-11-15, 00:36)nickr Wrote: http://www.amazon.com/L-shape-4-conducto...d_sim_e_15

And a solution to bending.
That doesn't work for the ws2012 or ws2811 because they only have three conductors not four.
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#14
I think I have seen three conductor ones too.
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#15
The system I build is a 3 conductor strip. WS2812B

http://www.aliexpress.com/snapshot/6194956267.html

Only difference is you have to use a 5v 10a power supply if you use more than a few leds

Image

and you dont need the resistor

and yes the UNO has plenty of memory. I leave mine running 24/7 and it has never crapped out.
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