Beiträge von Putzmeister


    I did notice in the list that it states:

    Device disabled, device 'ws281x' signals error: 'Failed to open. Error message: Selected GPIO not possible'


    Is there a reason GPIO 19 not being a valid output?


    Here's the data log. I notice that LED device turns off on boot, after turning it on I'm still not getting results.


    I noticed after doing a GPIO test it appears GPIO 18 appears to be non-functional, however after trying multiple PWM pins on the Pi I'm still unable to get any activity on the LED's

    The data line is correct, as I had it working briefly (Follow white cable from back of Pi), including an ad-hoc 470ohm resistor.


    Ws2812b's, running Hyperion.NG as a package from raspbian using the correct controller type.


    LED layout has changed due to cutting the strip during problem solving, which lends me to believe software issue.


    I'll try a fresh reinstall and get back to you with a debug.

    you can't kill them by measuring parallel voltage with a GOOD quality multimeter.

    Data line you can't measure with a multimeter, only with scope.


    it will maximum put out aprox 3.3 volts between GPIO and GND.

    So I managed to run or and grab a proper power supply. Steady 5V from start to end.


    Now I'm running into this issue which I've seen posted before.


    https://ibb.co/XxGCByc


    I'm beginning to think is either an odd software issue, or I've fried the strip. Is there an easy way to test if the strip is dead?

    Unfortunately I'm using the not so great "power brick" to run the LED's, so lowering the output voltage is a no go. For now.


    I'm always managing to have the 1st to 4th LED light up, with no voltage change along any of the LED's. Although I am occasionally seeing differing resistance along the Data line, sometimes showing an open circuit. Should I be seeing a change in voltage if I'm killing them through over voltage? Using a multimeter it appears I'm only damaging the data line.

    I thought that was the case. So I've cut about ~10 LED's out of the strip one by one, it appears to be a recurring problem. Each time I reconnect after removing 1-2, the next 2 appear to die.

    Having run through and set up Hyperion I managed to get it running for about an hour, after much trial and error. Unfortunately after unplugging the strip to re-locate it, it no longer works. Occasionally I'll have the first LED green, if I unplug and plug in the data line it will sometimes change to white or have 1-4 LED's light up, and it alternates between these or different colours.


    I am getting a consistent 5.4V along the entire strip, with 70 Ohms of resistance across each LED. After removing about 1/3 of the strip 1 LED at a time, to test if I had killed the 1st LED, I would occasionally get a lower resistance across the first. Very occasionally would it have an open circuit.


    After having it up and running for an hour I find it hard to think I'm killing the strip with 5.4V, but I get the impression I might be killing the data line. I've done some digging and read I might have to install a resistor from the GPIO pin to the data line, is this necessary? Willing to provide logs, although I'm unable to see anything unusual.


    Any help would be greatly appreciated.

    Been looking into creating a new first time build for the past few days and was just hoping to get some input and/or some recommendations.


    Here's my current parts list with an emphasis on simplicity and ease of use.


    Raspberry Pi Zero W.


    https://core-electronics.com.a…Xqu7Fciwx9qUaAhY3EALw_wcB


    Capture Card.


    https://www.amazon.com.au/gp/a…?smid=AB45PRC5K0YOC&psc=1


    HDMI Splitter.


    https://www.amazon.com.au/gp/a…smid=A2AFUPHXKS2512&psc=1


    LED Strip.


    https://www.amazon.com.au/gp/a…?smid=A4XRJ8S0WXSO0&psc=1


    Power Supply.


    https://www.amazon.com.au/gp/a…smid=A1JUHGLDN0W9DX&psc=1


    End Connector. (Common ground with LED+Pi)


    https://www.jaycar.com.au/2-1m…-screw-terminals/p/PA3713


    Probably going to harvest an old Micro USB to power the Pi.


    The length of the strip should be ~2.8-3m which gives me approximately 168 LED's total. My main concern is being able to power everything with the current choice of supply.


    Going off this chart I have a little bit of wiggle room and if not am I able to power the strip from both ends?


    https://hyperion-project.org/i…/3314-leds-and-specs-jpg/


    Just looking for some input. Cheers.