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ISSUE Do I have the right stuff?

Discussion in 'Hardware Support' started by kouklo, 30 November 2020.

  1. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    Hi all!!!
    I have wanted an ambient system for my TV for a while now, so I figured it's about time! The only thing I think I'm having issues with is the LED strips. Let me know what you guys think. I have a 65" 4K HDR Samsung with a Samsung soundbar. I have 2 devices connected to the soundbar/tv so I figured I will connect the ambient system after the soundbar before going to the tv. That way everything connected can use the ambient system and I don't have to worry about high-end audio with any kind of a splitter.

    System brains = raspberry pi 3

    HDMI Splitter = https://www.amazon.ca/gp/product/B07TVSBL7H/ref=ox_sc_act_title_5?smid=A1OKVMTDGZ4QZS&psc=1
    Will this splitter work for HDR or do I have to get the HDfury?

    Capture Card = https://www.amazon.ca/gp/product/B08LSLTMCR/ref=ox_sc_act_title_4?smid=A2Q980LEWKDKD5&psc=1

    Arduino Nano = https://www.amazon.ca/gp/product/B07L2CFV9C/ref=ox_sc_act_title_6?smid=A3CPM2K1HY59Q4&psc=1

    Power = I have an old Corsair 620W sitting around that I don't need anymore. I'll use this to connect everything. https://www.sparkfun.com/products/12867

    LED Strips = this one I have a few questions about. I'm looking at 2 different options here. With a 65" TV I believe ill need just short of 5M.
    https://www.superlightingled.com/dc...050-rgb-flexible-led-ribbon-light-p-2134.html
    and
    https://www.superlightingled.com/ap...e-rgb-led-strip-1m328-ft-per-roll-p-1163.html

    So my questions are.
    1-Is there any reason that a 12V wouldn't work with this?
    2-If I go for the 5V will my PSU be enough to power the strips and the PI 3?
    3-Are APA102 that much better than ws2815 (ws2812b)?
     
    Last edited: 30 November 2020
  2. danbutter

    danbutter New Member

    Messages:
    3
    Hardware:
    RPi3, 32/64bit
    I'm kinda in the same boat waiting for someone more knowledgeable to answer about the capture stuff as I posted a similar thread last week.
    I can however comment on a couple of your points.
    If you have a choice I would go with 12 volt strips just due to Ohm's law. You can push further with higher voltage so you can get away with fewer power injection points. The PSU should have a label on the side that tells you how many amps it can provide on each rail....Like for 5v +, 12v + and so on.

    This is what you need to look at to be able to tell, but I have some very old 300w PSUs that say they can give 20 amps on the 5v+ rail so you are most likely ok there. Rule of thumb I go by is never go past 80% of what is rated.
    So doing some quick math and looking at the 2815 strip (12v) you linked we have it rated for Power: 34.5 watt/meter, 172.5 watt/16.4ft
    So lets round to 175 watts which at 12 volts gives us just under 15 amps DC. 16 is 80% of 20 so I wouldn't use a power supply that can give less than 20 amps DC on the 12volt+ rail.
    This is with 144 leds/meter though. Your choice of course, but you probably don't need that density for a nice ambient display. The power budget would be much less with less leds (duh, I know) and so would the price.

    Keep us updated with your build. I'm interested to see how it goes as I'm still trying to buy (working) components for mine.
     
  3. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    So I was looking at the specs for the PSU. It says its +5V X 30A = 170W and +12V X 18A = 600W.
    I want to go with the 144/m so it gives me good coverage and a lot of light. My TV is a little over a foot away from the wall and I have no way of changing that.
    If my calculations are right then the PSU won't be able to power the 5V LEDs, so I guess I have to go with the 12V.
    As for the splitter I also found this. https://canada.desertcart.com/produ...-ultra-hd-4-k-60-hz-yuv-4-4-4-hdr-edid-scaler
    Someone suggested it in another post. It's a little pricy but if it works then ill get it.
     

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  4. NeeeeB

    NeeeeB Active Member

    Messages:
    237
    Hardware:
    RPi3, +Arduino, +nodeMCU/ESP8266
    144Leds/m is not needed.
    60Leds/m is a good compromise and you'll get perfect results with it.
     
  5. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    Fair enough, I can go with this one. https://www.superlightingled.com/ap...dvertising-board-5m164ft-per-roll-p-1169.html
    It's also an APA102 so from what I have read it should be better for this application. It says that a roll uses 90W so the PSU will be enough to also power the PI as well.
    Now that we figured that out, anyone have any good ideas for the splitter? The HDfury just seems unnecessarily expensive.
     
  6. jeroen warmerdam

    jeroen warmerdam Raspberry 3B / APA102 / Hyperion.NG relaisbox

    Messages:
    377
    Hardware:
    RPi3
    even with 30leds/m (i think) is more than okay.

    advantage with less led is that you can run them on maximum brightness, which improves density of the colours. I've experimented with 60 Leds/m but its too bright, at least for me
    now i am running the APA102 30 Leds/m on maximum brightness so there you go :)
     
  7. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    The PSU I have can do 170W on 5V so the 60/M should go full brightness. The website says that a full 5M uses 90W, even if that was a mistake I still have 80W of wiggle room. If I don't use this PSU its just going to sit there doing nothing, so I may as well use it.
     
  8. jeroen warmerdam

    jeroen warmerdam Raspberry 3B / APA102 / Hyperion.NG relaisbox

    Messages:
    377
    Hardware:
    RPi3
    a couple of pointers'

    just use a powersource with a steady 5 volts and capable of providing minimum of 10amps or more.
    my setup is 130 led's 30leds/m on APA102 provided with a selfmade frame on 4K 65inch tv. ( had to cut 20 leds)
    i use a PSU type ATX with 5 and 12 volts lines. > capable of providing 30 A and more on 5volts.
    It uses with PI and RCA converter about 3,5 amps

    you dont need the "law of ohm" just provide 5 volts to the begin and end of the ledstrip so you will even out the power
    make sure that you have enough amps to "feed" the ledstrip.
    make sure you ground everything to ground (-)

    144leds/m is way too much and will destract you from watching tv, don't take my word for it just try it and you will see.

    buy ledstrip on aliexpress instead of ledstripshops, will save you at least half of your money :)

    what Hyperion indicates of how much power your ledstrip needs, take about half of that number and you are right in the ballpark
    goodluck!
     
  9. jeroen warmerdam

    jeroen warmerdam Raspberry 3B / APA102 / Hyperion.NG relaisbox

    Messages:
    377
    Hardware:
    RPi3
    you are not reading what i am saying.

    first of all the PSU only can provide a power, the device demands only power the PSU can deliver (or not because its too light).
    it doesn't matter how much amps your PSU is, the only thing is that it should provide ( for basics) a minimum of 10 A

    further of all, you don't need a 12volt strip. Somebody here said this but its not true, you can do it with only a STEADY and clean 5.0 volts.


    good luck.
     
    Last edited: 2 December 2020
  10. jeroen warmerdam

    jeroen warmerdam Raspberry 3B / APA102 / Hyperion.NG relaisbox

    Messages:
    377
    Hardware:
    RPi3
    1; it works with a level shifter or arduino
    2; your PSU will be plenty okay ( i use ATX too)
    3; APA102 are quite okay, also experimented with WS2801, its just a matter of personal preference


    its not a kit you can order and build immediately guy, there's a lot here constantly improving installations/settings etc.
    i started with reading a lot on it on the internet and read a lot of forum topics and articles.

    good luck with everything.
     
  11. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    You make so good points @jeroen warmerdam, Ill go with the APA102 60/M and use my PSU.

    Does anyone have any good info about splitters for 4K/HDR etc? Will one of the 2 splitters I posted work?
     
  12. jeroen warmerdam

    jeroen warmerdam Raspberry 3B / APA102 / Hyperion.NG relaisbox

    Messages:
    377
    Hardware:
    RPi3
    me and a friend of mine have ours from XOLORspace
     
  13. NeeeeB

    NeeeeB Active Member

    Messages:
    237
    Hardware:
    RPi3, +Arduino, +nodeMCU/ESP8266
  14. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    That's awesome that I can save a good amount of $, thanks for that!! The only issue I have is that Aliexpress takes FOREVER to ship! I ordered something from there about 3ish years ago and it took (I'm not even joking here) 8 months to get to me. I know that's pretty rare but I have found that the average is still over a month.
     
  15. NeeeeB

    NeeeeB Active Member

    Messages:
    237
    Hardware:
    RPi3, +Arduino, +nodeMCU/ESP8266
    You're really unlucky, I order tons of stuff every week and it gets to France usually in 2 weeks, never more than 3.
     
    • Like Like x 2
  16. kouklo

    kouklo New Member

    Messages:
    7
    Hardware:
    RPi3
    France is A LOT closer to China, Russia, Poland, etc. than Canada is. LOL
    I have been looking at the link you posted for the last 30ish min and they have some really good prices. I might just buy everything from there. Still tho, the shipping time is a pain in the A$$. LOL
     
  17. NeeeeB

    NeeeeB Active Member

    Messages:
    237
    Hardware:
    RPi3, +Arduino, +nodeMCU/ESP8266
    Ah sorry...that forum displays funky flags sometimes and it currently says to me that you are in Spain...
    Btw, BTF prices are great and quality is even better.
    You can find BTF products on Amazon too, but they are at least twice more expensive...
    Be patient and you'll save a good amount of money ^^