Posts by Tomasz

Turn on screen capture - you'll get your lighting according what is going on on the monitor ;] (I guess)

Good morning Folks!

Im facing a interesting issue with migration from SD card to USB drive.

Since I upgraded my RPI to 4B 8GB I made new SD card with retropie on top and Hyperion Alpha 10 (cant manage with 11 yet) under.

With SD card all works like charm, when I have done same procedure with USB drive, after uploading json conf I cant turn leds on.

All seems to be fine, grabber works, got picture, leds setting are correct - no idea what is going on. Would like to provide logs but unsure how to

100% this is not wiring issue (such a shame i would fix it straight away)

Quote from SingingDwarf

TPmodding Are RGBW SK6812's still the best to get for a new setup?

If you looking for a full range colour strip then SK6812RGBW will work for you.

60leds/m is more than enough for me. My screen is 65 curved.

Quote from hadserub

The issue might be in the fact that your power supply's voltage and current rating are not compatible with your LED strip

Ture! Try with diffrent PSU. I have simular setup to your with no shifer - works like a charm.

In fact my SK6812RGBW is driven by GPIO 18 (RPI PWM ws281x)

Quote from jhecker

This is how my setup is wired:

Why do you use extrenal splitter if you have av receiver working as a splittler?

Just curious...

What was the issue finally? ;]

Quote from GurU

I'm afraid of messing up the RPi :x

Tip of the day - before soldering unplug rpi from PSU

Quote from Lightning-guy77

Only if used separate PSU for Raspi and for ledstrip then you can run the Raspi at slightly higher voltage

Yeah, but both need common ground I believe ;]

Dr Zzz's tutorial this will help you with whole process how to do it ;]

Don't you bother that Zzz's uses WS2812B. I have same strip as yours and works perfectly with this tutorial.

Hi Guru, have you try to switch in config controller from SPI 0 to WS281X ?

Sure, 8A is enough but still. We have here two power consumers. 12V and 5V. You could use logic shifter but still no explanation why it stopped working... did you check all connections? do you get any light from the strip?

Quote from Lightning-guy77

undervoltage warning is normal, PI wants to run under 5.3 volts

you can overrule in config.txt the undervoltage warning

True I can do that, but stress test for raspberry shows me that board works at 600MHz only..what indicates power issue.

I'd try to change FPS in video grabber to let's say 30 and resolution - as low as possible.

Change the wiring my man.

Do not power your raspberry via GPIO - there is no voltage protection.

Get an old usb cable, cut the plug. Two ends connect to power supply the other to raspberry.

Thanks to this you will get common ground for board and leds - will work. If not we will figure it out ;=)



WS2815? 2815 needs 12V to work. It wont fire up with 5V!

Quote from Lightning-guy77

if you are using a Raspi that consumes around 700 miliamps or 0,7 Amps

So you are safe with 75 Watts/15 Amps PSU

Thank You Sir!

Unfortunately my PSU has 15amps, rpi screams about undervoltage. As all we know it isn't safe to stress power supply 100% - so in my case there's two possible issues - no enough power for RP3 or wiring issue.

Here's my power suppply 

55" Curved Samsung, Raspberry PI 3B + SK6812RGBW controlled via GPIO18 (watch from the half of the clip)

Quote

Hello,

Just add it, how your setup?

Okay, just add it. Then what? How to wire it ?

Any progress?

What's the blue wire attached to the board?

Guys, I have a question regarding power consumption.

219 leds - SK6812 RGBW - what power brick should I use to power leds and RP3? 30A How to calculate current draw from the leds correctly?

Quote

Are you sure about that ? Maybe its newer but nicer colour pallet, you have proof of that

Did you see my video, I don't think you can achieve much more accurate vibrant colours and step up from this result. Prove me wrong

With strips is like with cars or woman.

One man likes WS2812B the other guy loves APA102 ;]