Beiträge von Ambientheater77

hello fellow ambilight builders.

First of all this is just a personal story in general and I wonder why a lot of builders always tend to use the most difficult ledstrip route there is (seems) to get it to lite...

The one and only SK6812!!

why this strip, why the choice to use it. Especially for beginner builders. It's a clone strip...

see in this forum, the only thing you read about is (big) problems to get it to work. Even with PWM or SPI signal this strip isn't for the weak to get it to bloom into full colour spectrum.

And no it isn't the best, the HD107S is really really good without the white channel separate..

If you don't believe me I will put a video on the tube to prove it to you.

You see, alot has to do with proper PSU and solder connections. That will also improve or make the ledstrip worse than it is capable to.

So make sure using good voltage ⚡️ see and check specifications of the strip. Check the specs!

if you want a easy build on a raspi then. . Read along. Just used a standard Hyperbian build with build in controller.

when I first started I used the WS2801 and it was a walk in the park running on SPI with 96 leds only.

My second strip was a APA102, using the SPI controller with 130 leds was a walk in the park.

My thirth strip was a HD107s, again it run flawlessly with 300 leds on APA102 controller, only resizing SPI buffer and that was it.

in this case i like easy, easy is fine and good

All those ledstrips run flawlessly on a Raspi 3b....

With Hyperion.NG 2.013, so not even the newest branche. I never had to deal with extra modules or channel converters to increase signal from GPIO. Just standard GPIO 10/11 and SOLDERING directly onto the GPIO. Voltage inserted in 3 points on the strip.

so there you have it, it's a insight and maybe a plan how you also can build it.

First try it the easy way and then the intermediate way to expert.

That would be my advice.

happy builds.

Greetings.

in my old posts I made a sketch how to connect everything

my advice (because you said it run already)

Don't use the push connector on the Raspi board but solder it.

Make sure the GND is connected to Raspi PSU and strip, use 2 GND on Raspi

I think, but it's only a quess..

Your router/switch doesn't provide the Raspi with dhcp IP adres, so the device doesn't receive IP adres. Hence, you cannot go to browser API

Normally Raspi boots under dhcp, static IP adres config isn't necessary (normally I have to say)

Check your connection/utp cable and see if LAN Raspi port gets green/orange lights blinking

Make sure router/switch puts out dhcp, or turn on dhcp server option 🤔

and I have to say, didn't know that was also possible to get the rtsp stream into Hyperion and is far above my Raspi knowledge

But: I did it with a analog Cam in colour with a 3-11 mm DC lens. That was aimed to the TV and the analog signal connected to a usb grabber.

It worked but. Colours where somewhat off because of the dark spot when dim scenes is playing.

BC backlight compisation was ON on the colour camera,

Result was a meager 7

cons with this setup was no hassle whatsoever with hdcp/arc/edid/ etc

you can do that with GPIO3 and putting a line extra in config.txt at dtoverlay

dtoverlay=gpio-shutdown

Connect then GPIO3 with GND with a switch or relais and it will go into sleep. Hit it again and it will awake

it's pwm so only with a scope you can measure it.

Pulse width modulation is an electronic signal/ duty cycle with intervals.

Make sure Hyperion is running under root otherwise pwm isn't working correctly, also disable audio output in config.txt

make sure you have common GND to ledstrip/raspi and PSU, ar least 2 GND on Raspi especially with that connectors

GPIO connection my advice is to solder it, those pushconnectors are the worst because of bad connections.

Check voltage at begin and end of the strip

What's the type of ledstrip used?

RGB or +W ? Type

Lord-Grey

Maybe it's a plan to merger every SK6812 topic into one big one.

It's really a difficult ledstrip to get it working, in this way all tips and tricks are bundled in one topic. I read a lot of problems everywhere with only this strip..

Call it

The big SK6812 topic, for all tips/problems/tricks

It's just a idea 💡

you can extend the SPI bus buffer to maximum, so I think yes you can do that.

Ledstrips and characteristics will differ, I have the HD107s leds running on SPI0.

Each setup is different.

Don't forget to ground your Raspi to the PSU and ledstrips.

Goodluck

you can't use 2 separate PSU on the same strip if it's not in 2 pieces in the middle.

The only way you can is to cut the V+ Vin.

What I would do: use 5mtr strip and power this with PSU1 head/tail

Do this again with strip 2 and PSU2.

So: location where strip 1 ends.. You connect the beginning of 2 but only solder the data 1 on 1 from strip 1 to strip 2 !!

GND from both PSU you connect together

I have 300 leds, 60L/m and I powered with only 1 PSU begin/middle/end.

Why middle? Because I had power drop and leds where yellowish in the middle and not full bright white.

hi,

I am using this

It's a Raspberry SSH paid app that you can configure per each button

note:

SSH must be enabled in config of the Raspi or it will not work. Standard port 22

a new year is 2024!

I am partially back here but tempered and moderate, not in the old ways of xx replies a day.

So if you have a question and I have the time/opportunity then I will answer you in my convenience.

But for now sailing along with mod's and the forum.

hi,

I have a Shield setup and didn't use the Screen grabber because of the problem with streaming platforms as Netflix etc.

I took a different approach and used a hdmi 4k receiver with 6 input 4K hdmi ports and 1 hdmi 4K port out.

Setup:

Shield tv Pro 》 hdmi receiver IN 》 hdmi receiver out 》input 4K signal to HDCP 2.1 hdmi splitter 60p

Splits into :

Output2: hdmi 1080p 》 grabber 1080p 》 Raspi

Output1: Hdmi 4K 》 passtrough at 4Ktv

I have Hyperion.ng on all 6 hdmi channels and every streaming platform as YouTube Netflix Disney Amazon etc works.

HDR / Dolby Vision works.

Also audio bitstreams as DTS /Dolby Digital + etc, are working in this setup.

what's the question?

Hyperion.ng and the raspi dont need/want to endure 60p and 4K resolution.

You can make a DIY Hyperion.ng setup with only a 1080p grabber, and settings in Hyperion.ng only 720p and 25FPS

You can find grabbers on Aliexpress from same vendor (coffee black)

Dont use the grabbers with separate audio Jack because it can revert the audio from your hdmi signal and audio will fade.

So in short, you can do it with Raspi 3B already or higher, use a template image of Hyperbian, write it on SD card.

Stick the grabber into the Raspi for getting hdmi signal.

Goodluck with endeavours

Hello folks, it was a great ride this 2 years but everything must come to and end.

I hope my contributions can help a lot of others but my time here has ended in this forum, it’s to time consuming to answer the same questions over and over again.

Also boring (for me that is)

So I salute you and the dev’s for development in the near future…

Bye!

Zitat von Quen

Thanks, I have returned it, but I have one more question

Refreshrates like 50/60 Hz is something diffrent than FPS.

• FPS is frames per second in video transmitted trough HDMI/DVI or other, it has a maximum resolution pér frame

• refreshrate is coming from local Energy provider normally between 50 and 60 Hz. It means the power (230v ~) is switched high and low 50 or 60 times in a second, also called frequency

so the 2 go hand in hand but are not the same.

normally i would say that FPS should be lower than the maximum refreshrate of the monitor.

Zitat von vitman

tell me please. Is there a way to add dark colors with good brightness (80-100%) and without losing precision of color.

look at section capture hardware, if signal detection is on there you can alter treshold values for dark Red Green Blue detection.

(Translation is wrong there... so dont mind that. )

thats something you can do about "dark" colours

colorcalibration look at compensation brightness also.

power the capturedevice from another USB source than the raspi.

the "whites" mean static, if you watch your live feed then you'll see static colours.

The signal can not come trough the receiver ( from whatever reason)

so you have several options to troubleshoot:

• inject the USB power into the capture device from the TV/PSU but NOT raspi.
• Set HDMI out at receiver at MAIN HDMI both. If this doesn't help use a splitter on only one HDMI out channel.
• you have a HDCP problem, you can see that if you switch to Netflix e.a. it will warn you OSD
• If not than its probably the first 2 mentioned rules i showed you.

And for the good capturing: set size decimation at 2, FPS at 25, encoding format as MJPEG, resolution as 720P 720x576

thank me later.

goodluck!