Posts by AbleWorker

    I can confirm.

    Just installed Hyperbian image downloaded from here:

    Image file name = "2022-05-23-HyperBian-lite.img"

    I added wpa_supplicant and ssh files. The pi connected successfully to home wifi network, upon boot.

    I could easily view configuration webpage at http://myIP:8090 and at https://myIP:8092.

    However, the config web gui is telling me that I am running version 2.0.12 and that I can update to 2.0.13.

    I also could not SSH into my pi. The default "raspberry" password was not working. I connected via ssh on port 22, but it would not accept pw "raspberry" for user "pi". I could not logon via ssh even though I was easily able to connect.

    Wanted to say that, although I am using sk6812 RGBWW lights, it would not work when I had sk6812spi selected as the controller type in the LED Hardware section of web configurator. ..if anyone cares, these are the exact lights I am using:

    I changed the controller type to ws281x and now the lights suddenly work for the first time ever.

    @TPmodding I want to tag you in case this was useful info to you. Idk what "spi" is or if it makes a difference. But changing the controller type appears to have fixed my problem without the need for a logic level shifter. However, I will update with more info as I play more.

    If anyone has guidance, please share. Thanks.

    leds need 5v, data signal needs MIN vcc*0,7 -> 5v*0,7=3,5V Datasignal...pi has a 3,3V data most people have luck and it works, cause there vcc is not 5v...
    but as you measeured you have 5.10 so 5,1*0,7 = 3,67V datasignal....

    best case is to use a 3.3v to 5v level shifter

    the mentioned "trick" with a so called "dead-pixel" works sometimes..but also in this case: it is always better to use a level shifter

    Ok I understand. Thanks for your quick response.

    I'm using a cheap meanwell knockoff psu (5v20a) to power an RPi 4b, 5v usb fan (type A connector cutoff, wired to psu), and an SK6812 strip (5m, 60/m) from BTF Lighting (amazon). I connected a type C connector to the psu to power the RPi4b.

    I connected the psu to both ends of the SK6812 strip. Meaning, I attached male and female connectors to the psu, which match the connectors at either end of the SK6812 strip. Red wires to positive leads. Everything works but the light strip. The Pi is running HyperBian (alpha 8). I ran "apt update apt full-upgrade" successfully (over ssh). I can connect to the Hyperion web interface (port 8090) and the Hyperion android app syncs successfully (port 19444).

    I verified all my polarity is correct and the psu puts out 5.10 volts. I unplugged the far end of the LED strip (the end the data flow arrows point toward) and got a measurement of 4.96 volts. The data wire is connected to GPIO pin #12 (aka GPIO18), which is directly next to a ground wire for Pi case fan connected to pin #14. There is roughly 11.5" (29cm) of wire between pin #12 and the first LED on the strip. The GPIO is connected to the end that the data arrows point away from (indicating it is the first diode in the data line).

    I did not affix the strip to the TV, I have not cut the strip at all. I have only unrolled it from the spool it came on. Otherwise, I have done nothing to the SK6812 strip.

    I had another WS2812b strip (5m, 60/m) that I plugged into the connectors wired to the psu, again with roughly 11.5" (29cm) of wire between the GPIO18 pin (pin #12) and first LED. Same exact result. I measured 4.96v at the far end of the strip and no lights whatsoever.

    I just bought both strips and have never verified that either strip actually works.

    Obviously, my first thought is the data signal is not making it to the first LED. I can use the method where I sacrifice an LED pixel right next to the GPIO pin to boost the signal what would be the "first" (but really second) pixel.

    However—I want to make sure there is not something in the software that I am missing. I did run a "apt full-upgrade" rather than regular upgrade, so don't know if that would change anything. Also, not sure if there was something I need to run at the command line but hyperiand daemon is definitely running (and using about 11% of cpu). Is there anything I can do at the command line (or web interface / android app) to verify the data signal is weak? Or is there something I am missing or should check out???

    I am as big a noob as there is. This is first time I’ve used a multimeter and I’ve never touched a soldering iron in my life. But I’m reasonably solid with linux. I don’t know much but I can learn and want to learn more.

    I’m just a bit frustrated right now. :facepalm:

    Thanks for all the help guys. I appreciate it.

    EDIT 01 - Dr. Zzs used a much longer data wire connection to his first LED and has no problem. That makes me wonder if it is really low voltage on my data line. But I'm not sure which Pi he's using in this video. I'm using a Pi 4b with 2GB ram.

    EDIT 02 - I shortened the data wire to 11.5" (29cm) to the first LED. That should be plenty short enough, but I still have no lights whatsoever. I am more sure this is a software issue.

    I'm new and trying to learn.

    For your average living room TV setup, it seems like everyone overcomplicates their setup by adding another micro-controller in addition to the RPi...why? E.g., an arduino or esp8266. Why not connect LED data wire to RPi GPIO and eliminate the extra controller? Doesn't the extra controller add latency?

    My question assumes using an RPi and WS2812b lights. Along w hdmi usb capture w loopout. With these lights, you just connect the green led data wire to gpio. Please note, I am not saying to power the lights off the Pi. I'm saying to feed the data line from the Pi rather than an arduino or esp8266.

    What am I missing? What's the benefit for the basic home living room setup?