[DIY] Amblight project/guide - Hyperion - WS2801/ WS2812B / APA102 (2 Viewers)

[Rick164]

Nice, would make sure the "Generic Mini HDMI RCA 2 AV-Konverter" is powered via usb and not via hdmi in case you want to toggle it on/off later on
Added a new example config for WS2812B, it gives smoother transitions and is similar to the Philips dynamic setting so it's a bit slower when it comes to action scenes.

 

[ixdvc]

It has an USB/power connector. So I think that should be possible. But it would be a problem if this is only optional and it gets the power over HDMI if no USB is connected. According to one customer rating it works without USB connection in some cases, which would be bad. http://www.amazon.de/Generic-Mini-HDMI-AV-Konverter-Videorecorder/dp/B00AASZUUM/

 

[Rick164]

Yeah, had that issue in the beginning and was caused by power leak/interference from another device in the plug box (which also had the AVR in it).
Adding all video capture devices (including rPI) to a dedicated plug box solved that , don't think it will happen for everyone but that should solve it.

 

[ixdvc]

But you only turn off the converter and not the whole plug box, right?
In your case the USB connection has to be mandatory. Otherwise turning off the power source would not work. Which HDMI converter do you use?

 

[Rick164]

Correct, only turn off the converter.
The dedicated plug box helped to eliminate the interference as apparently it would otherwise get power via HDMI sometimes.

Used one from Conrad:

https://www.conrad.nl/nl/hdmi-cinch...koppeling-wit-speaka-professional-989287.html

 

[ixdvc]

At least from the image the converter looks the same. So it should work.

 

[RicoHTPC]

If they somehow made an device that would allow 24hz composite input/output than that would certainly solve it but sadly don't see enough information on the site itself.

I didn't want to give up on that topic so I contacted the suppport again.
Here's the mail:

Hi Enrico,

Yes, hdmi Premium kit handles 1080p @24Hz easily as long as it is 2D. Premium kit converts it to PAL standard, so that grabber (embedded into same device) is able to pass it to raspberry pi.

I will try to upload "video proof" soon.

Jacek

niedz., 30 lis 2014, 16:53 Enrico *** użytkownik *** napisał:
Hello
I would like to know if the lightberry premium kit can handle 24p content like movies from bluray discs. That is movie content in 24hz frame rate (23,976 to be precise) and is a problem for other ambilight solutions because HDMI digital/analog converter only convert 50hz and 60hz.
If lightberry could handle this that would be an unique selling point. Could you then please upload a video on youtube showing that it works with 24p?

Regards,

Enrico

 

[RicoHTPC]

I will try to upload "video proof" soon.

A bit short but he kept his word.

 

[Rick164]

Just hope they can supply some more details because with the limited specifications they list this shouldn't work as the stk1160 chip requires an analog input.
In the video it looks like an blu-ray menu and seeing PAL which is weird because that standard doesn't allow 24hz only 25//50hz, still not entirely convinced unless they do a bit longer video with more details included.

 

[Rick164]

Found something weird when using Arduino 1.0.6 to build the WS2812B sketch, it made all the leds flicker and non-responsive.
After some digging I found that you need to increase the serial buffer in the Arduino program itself, added an example for the Uno in the how to for users that are gonna use WS2812B leds and are affected by it
Direct link to it here:

http://www.hobbytronics.co.uk/arduino-serial-buffer-size

Still a bit weird why it worked before with the older versions but oh well this solves it.