If your TV has at least 8 Zoll distance to the Wall 36 is enough.
Under 8 Zoll 60 looks better.
WS2801 needs strong color adjustments
- Blu3ye
- Erledigt
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Does anyone have their TV mounted against a wall? If so - does it work okay?
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I have a swiveling tv wall mount and this works great.
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I wonder if this is another strip with the wrong resistors fitted ?
What does that mean? Can I figure it out by myself?I´m wondering why there are so many tutorial with WS2801 if it is "known" there are more problems like this? Can´t imagine that Aki(?) from powerpi.de would choose this without thinking over it. He also uses WS2801 in his tutorials and has a good white default with just a little need of adjustment.
These stripe I got from Hello Fish do look like good quality. No welding issues or similar. Also the feedbacks on Aliexpress look good and for what I have found with a quick research APA102 are not that much more expensive?!
After calibrating I´m having an even more bad ambilight experience. It´s like normal colors are way to bright/less saturated and dark scenes are much too strong and often "dark red/orange" or "purple" when it should be nearly black! Not making fun right now... =(
Spent much time with the calibration and with the calibration pictures everything looked great but with live program it´s not... any hints for me?Will take some pics when the sun goes down to show it - or should I make a new thread for this?
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Not all ws2801 are bad but some of them have a wrong white. Aki has also changed to the Apa102! http://powerpi.de/forum/viewtopic.php?t=4
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who is aki?
ws2801 are recommended cause they are often used and had the best price-performance. but this is however history
https://hyperion-project.org/t…which-led-is-the-best.35/ -
The ws2801 is just a chip - it's up to the strip manufacturer how they implement it and their level of quality.
The datasheet has some worked examples on what the resistor values should be.
Green and blue LEDs have a similar forward voltage drop so their resistors are often the same value - typicaly 100 ohm
Red LEDs have a lower voltage drop so need a higher resistor - 130 or 150 ohmThose resistor values are just from randomly looking at photos on eBay and j can already see some variation before we look at manufacturing errors.
You'll need a multimeter to truly test how it's wired and the resistor values
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With my ws2801 i had almost the same Values to get a good White. After i changed to the Apa102 my Values are 255 255 255.
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I have the same issue with ws2801 but I hot glued them to the tv. Yellow never looks right does it? The Apa102 are pretty expensive right now, I am going to stick with the ws2801 for a while.
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I have a question about the powersupply: I'm using a 5V/20A supply.
Is it possible to use this with the APA102/60. The length is 4,50 meters -
yes they do need strong color adjustments, i get really good results with :
white at R:255 G:74 B:46
gamma: R:3,04 G:2,5 B: 2,5I am having problems with overall brightness though since updating to new version of hyperion... I dont think its a chip problem though
-> if somebody has left some apa102 over and wants to sell them please contact me via PN. if i can get enough leds for my 49" TV i would like to give these leds a try.
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I have a question about the powersupply: I'm using a 5V/20A supply.
Is it possible to use this with the APA102/60. The length is 4,50 metersAPA102/60 uses max 18W/m
18W/m x 4,5m = 81WYour supply offers 5V x 20A = 100W
So yes, this should work you even have some reserve.
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