[DIY] Amblight project/guide - Hyperion - WS2801/ WS2812B / APA102 (4 Viewers)

[Freshage]

Running 204 LED's, should I increase the baud rate to 146,880? Going off 204 * 24 (bits) * 30 (fps)?

Not sure if there will be any benefit, just triple checking my notes from our conversation before heading home and getting stuck in.

Actually, let's assume 60fps as I'll also be gaming... So will have to go as high as 293,760... Almost triple the standard.

 

[Rick164]

Yeah but would raise it to 460,800 to give you some headroom or for future expansions as the Uno R3 allows that and used to drive 218 leds perfectly @ 60 fps using that rate

You might need to tweak the RPi max baud rate setting but have the required steps for that listed in the Additional configuration chapter.

 

[Freshage]

Dude, you've worked magic! It's amazing. Perfect. Thank you.

One thing, black border protection doesn't seem to work...

"blackborderdetector" :
{
"enable" : true,
"threshold" : 0.5,
"unknownFrameCnt" : 600,
"borderFrameCnt" : 50,
"maxInconsistentCnt" : 10,
"blurRemoveCnt" : 1,
"mode" : "default"

 

[Rick164]

Good to hear
Noticed that the threshold there is set pretty high, would use the following settings:

  "blackborderdetector" :
   {
     "enable" : true,
     "threshold" : 0.01,
     "unknownFrameCnt" : 600,
     "borderFrameCnt" : 50,
     "maxInconsistentCnt" : 10,
     "blurRemoveCnt" : 1,
     "mode" : "default"
   },

Also you can also change the "mode" there from default to classic to use the original black border detection in case something is going wrong but would try to keep the default as it's more accurate.
If all else fails best to check if the screenshot output from hyperion-v4l2 shows no borders as well to make sure the crop settings are correct.

Couple of screenshots that show the black border modes:

Source:
https://github.com/tvdzwan/hyperion/pull/470#issue-128985782

 

[Freshage]

Again, thanks mate.

Final question hopefully. I can't for the life of me work out how to have Hyperion start the video grabber config from startup... As in, I have to SSH into the Pi to launch the config to get the ambilight to work every time. Anyway around this?

Also, that border config above didn't work... I've had to do this:

"blackborderdetector" :
{
"enable" : true,
"threshold" : 0.1
},

 

[Rick164]

With OpenElec you should be to run this command and it will remain running in the background:

/storage/hyperion/bin/hyperiond.sh /storage/.config/hyperion.config.json </dev/null >/dev/null 2>&1 &

On Raspberry reboot it should start its own so this only needed when tweaking things

 

[Freshage]

I'm on OpenElec.

The command you've supplied is the one I'm running, but as soon as I crash out the SSH connection, the Ambilight freezes up...

 

[Rick164]

Hmm that's weird, if you reboot the Raspberry does it start correctly?

 

[Freshage]

Yep, ignore me haha. No worries

All seems to be good then! I'm now just tweaking to get reds, greens and blues as best I can.

 

[Rick164]

Nice, let me know how it goes