(WS2801 + RPi3) No Red Color Channel From Video Grabber

nukepenguin · 29. August 2017

I have successfully configured hyperion to work on OpenElec and Raspbian. Unfortunately, I am seeing some strange behavior and have not been successful in finding any information online.

As far as I can tell, hyperion is configured properly (JSON contents included below), and the LEDs do react as expected for the most part, but it seems that the red color channel is not registering, leaving all colors on the strip blue, green, or a combination of the two. I suspect this might be a problem with the capture card. When I take a screenshot using the hypercon tool (in the SSH tab), the image that I get always has a blue tint and it missing the red color information (comparison photo attached).

I've swapped HDMI cables, swapped outputs on my hdmi splitter, etc. The LED strip itself is fine, and works perfectly with the hyperion app to set colors/effects and the red channel is fine there. Am I missing something here? If anyone has an idea about where to start, or can help me troubleshoot to confirm my suspicion about the capture card being bad, I would be very grateful for some input.

Here is my hyperion JSON config:

"JSON CONFIGURATION FILE"

Code

// Automatically generated configuration file for Hyperion ambilight daemon
// Notice: All values are explained with comments at our wiki: wiki.hyperion-project.org (config area)
// Generated by: HyperCon (The Hyperion deamon configuration file builder)
// Created with HyperCon V1.03.1 (11.06.2016)


{
    // DEVICE CONFIGURATION
    "device" :
    {
        "name"       : "MyHyperionConfig",
        "type"       : "ws2801",
        "output"     : "/dev/spidev0.0",
        "rate"     : 1000000,
        "colorOrder" : "rgb"
    },


    // COLOR CALIBRATION CONFIG
    "color" :
    {
        "channelAdjustment" :
        [
            {
                "id"   : "default",
                "leds" : "*",
                "pureRed" :
                {
                    "redChannel"        : 255,
                    "greenChannel"        : 0,
                    "blueChannel"        : 0
                },
                "pureGreen" :
                {
                    "redChannel"        : 0,
                    "greenChannel"        : 255,
                    "blueChannel"        : 0
                },
                "pureBlue" :
                {
                    "redChannel"        : 0,
                    "greenChannel"        : 0,
                    "blueChannel"        : 255
                }
            }
        ],
        "temperature" :
        [
            {
                "id"   : "default",
                "leds" : "*",
                "correctionValues" :
                {
                    "red"     : 255,
                    "green"    : 255,
                    "blue"     : 255
                }
            }
        ],
        "transform" :
        [
            {
                "id"   : "default",
                "leds" : "*",
                "hsl" :
                {
                    "saturationGain"    : 1.0000,
                    "luminanceGain"        : 1.0000,
                    "luminanceMinimum"        : 0.0000
                },
                "red" :
                {
                    "threshold"     : 0.0000,
                    "gamma"         : 2.5000
                },
                "green" :
                {
                    "threshold"     : 0.0000,
                    "gamma"         : 2.5000
                },
                "blue" :
                {
                    "threshold"     : 0.0000,
                    "gamma"         : 2.5000
                }
            }
        ],
    // SMOOTHING CONFIG
        "smoothing" :
        {
            "type"            : "linear",
            "time_ms"         : 100,
            "updateFrequency" : 25.0000,
            "updateDelay"     : 0
        }
    },


    // V4L2 GRABBER CONFIG
    "grabber-v4l2" :
    {
        "device" : "/dev/video0",
        "input" : 0,
        "standard" : "NTSC",
        "width" : -1,
        "height" : -1,
        "frameDecimation" : 2,
        "sizeDecimation" : 8,
        "priority" : 900,
        "mode" : "2D",
        "cropLeft" : 0,
        "cropRight" : 0,
        "cropTop" : 0,
        "cropBottom" : 0,
        "redSignalThreshold" : 0.0,
        "greenSignalThreshold" : 0.0,
        "blueSignalThreshold" : 0.0
    },


    // BLACKBORDER CONFIG
    "blackborderdetector" :
    {
        "enable" : true,
        "threshold" : 0.01,
        "unknownFrameCnt" : 600,
        "borderFrameCnt" : 50,
        "maxInconsistentCnt" : 10,
        "blurRemoveCnt" : 1,
        "mode" : "default"
    },


    // BOOTEFFECT CONFIG
    "bootsequence" :
    {
        "color" : [0,0,0],
        "effect" : "Rainbow swirl fast",
        "duration_ms" : 3000,
        "priority" : 700
    },


    // JSON SERVER CONFIG
    "jsonServer" :
    {
        "port" : 19444
    },


    // PROTO SERVER CONFIG
    "protoServer" :
    {
        "port" : 19445
    },


    // EFFECT PATH
    "effects" :
    {
        "paths" :
        [
            "/storage/hyperion/effects",
            "/usr/share/hyperion/effects"
        ]
    },


    // NO FRAME GRABBER CONFIG
    // NO KODI CHECK CONFIG
    // NO BOBLIGHT SERVER CONFIG
    // NO JSON/PROTO FORWARD CONFIG


    // LED CONFIGURATION
    "leds" :
    [
        {
            "index" : 0,
            "hscan" : { "minimum" : 0.6364, "maximum" : 0.6667 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 1,
            "hscan" : { "minimum" : 0.6667, "maximum" : 0.6970 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 2,
            "hscan" : { "minimum" : 0.6970, "maximum" : 0.7273 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 3,
            "hscan" : { "minimum" : 0.7273, "maximum" : 0.7576 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 4,
            "hscan" : { "minimum" : 0.7576, "maximum" : 0.7879 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 5,
            "hscan" : { "minimum" : 0.7879, "maximum" : 0.8182 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 6,
            "hscan" : { "minimum" : 0.8182, "maximum" : 0.8485 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 7,
            "hscan" : { "minimum" : 0.8485, "maximum" : 0.8788 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 8,
            "hscan" : { "minimum" : 0.8788, "maximum" : 0.9091 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 9,
            "hscan" : { "minimum" : 0.9091, "maximum" : 0.9394 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 10,
            "hscan" : { "minimum" : 0.9394, "maximum" : 0.9697 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 11,
            "hscan" : { "minimum" : 0.9697, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 12,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.9412, "maximum" : 1.0000 }
        },
        {
            "index" : 13,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.8824, "maximum" : 0.9412 }
        },
        {
            "index" : 14,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.8235, "maximum" : 0.8824 }
        },
        {
            "index" : 15,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.7647, "maximum" : 0.8235 }
        },
        {
            "index" : 16,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.7059, "maximum" : 0.7647 }
        },
        {
            "index" : 17,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.6471, "maximum" : 0.7059 }
        },
        {
            "index" : 18,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.5882, "maximum" : 0.6471 }
        },
        {
            "index" : 19,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.5294, "maximum" : 0.5882 }
        },
        {
            "index" : 20,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.4706, "maximum" : 0.5294 }
        },
        {
            "index" : 21,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.4118, "maximum" : 0.4706 }
        },
        {
            "index" : 22,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.3529, "maximum" : 0.4118 }
        },
        {
            "index" : 23,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.2941, "maximum" : 0.3529 }
        },
        {
            "index" : 24,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.2353, "maximum" : 0.2941 }
        },
        {
            "index" : 25,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.1765, "maximum" : 0.2353 }
        },
        {
            "index" : 26,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.1176, "maximum" : 0.1765 }
        },
        {
            "index" : 27,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0588, "maximum" : 0.1176 }
        },
        {
            "index" : 28,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0588 }
        },
        {
            "index" : 29,
            "hscan" : { "minimum" : 0.9697, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 30,
            "hscan" : { "minimum" : 0.9394, "maximum" : 0.9697 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 31,
            "hscan" : { "minimum" : 0.9091, "maximum" : 0.9394 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 32,
            "hscan" : { "minimum" : 0.8788, "maximum" : 0.9091 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 33,
            "hscan" : { "minimum" : 0.8485, "maximum" : 0.8788 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 34,
            "hscan" : { "minimum" : 0.8182, "maximum" : 0.8485 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 35,
            "hscan" : { "minimum" : 0.7879, "maximum" : 0.8182 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 36,
            "hscan" : { "minimum" : 0.7576, "maximum" : 0.7879 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 37,
            "hscan" : { "minimum" : 0.7273, "maximum" : 0.7576 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 38,
            "hscan" : { "minimum" : 0.6970, "maximum" : 0.7273 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 39,
            "hscan" : { "minimum" : 0.6667, "maximum" : 0.6970 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 40,
            "hscan" : { "minimum" : 0.6364, "maximum" : 0.6667 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 41,
            "hscan" : { "minimum" : 0.6061, "maximum" : 0.6364 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 42,
            "hscan" : { "minimum" : 0.5758, "maximum" : 0.6061 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.5455, "maximum" : 0.5758 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.5152, "maximum" : 0.5455 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
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            "hscan" : { "minimum" : 0.4848, "maximum" : 0.5152 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 46,
            "hscan" : { "minimum" : 0.4545, "maximum" : 0.4848 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.4242, "maximum" : 0.4545 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 48,
            "hscan" : { "minimum" : 0.3939, "maximum" : 0.4242 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.3636, "maximum" : 0.3939 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.3333, "maximum" : 0.3636 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.3030, "maximum" : 0.3333 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 52,
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            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.2424, "maximum" : 0.2727 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.1212, "maximum" : 0.1515 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.0909, "maximum" : 0.1212 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
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            "hscan" : { "minimum" : 0.0606, "maximum" : 0.0909 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
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            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
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            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0588 }
        },
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.1176, "maximum" : 0.1765 }
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.2353, "maximum" : 0.2941 }
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        },
        {
            "index" : 68,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.3529, "maximum" : 0.4118 }
        },
        {
            "index" : 69,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.4118, "maximum" : 0.4706 }
        },
        {
            "index" : 70,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.4706, "maximum" : 0.5294 }
        },
        {
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.5294, "maximum" : 0.5882 }
        },
        {
            "index" : 72,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.5882, "maximum" : 0.6471 }
        },
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.7059, "maximum" : 0.7647 }
        },
        {
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
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            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.8235, "maximum" : 0.8824 }
        },
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            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
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            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
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            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
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            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 86,
            "hscan" : { "minimum" : 0.2121, "maximum" : 0.2424 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 87,
            "hscan" : { "minimum" : 0.2424, "maximum" : 0.2727 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 88,
            "hscan" : { "minimum" : 0.2727, "maximum" : 0.3030 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 89,
            "hscan" : { "minimum" : 0.3030, "maximum" : 0.3333 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        },
        {
            "index" : 90,
            "hscan" : { "minimum" : 0.3333, "maximum" : 0.3636 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
        }
    ],


    "endOfJson" : "endOfJson"
}

Alles anzeigen

nukepenguin · 29. August 2017

Replacement video grabbers are inbound, as I'm not sure where else to go with this, unless my HDMI -> RCA converter is the actual issue.

nukepenguin · 2. September 2017

I have tested other grabbers and other RCA connectors/cables with the same result. The last thing left that could possibly be wrong would be some strange issue with HDCP, or the RCA out on my HDMI to RCA adapter. Hopefully someone else here has seen something similar to this...

nukepenguin · 3. September 2017

After a bunch of troubleshooting, it turns out that the HDMI to RCA converter I bought was bad. I replaced this with another HDMI to RCA converter of the same type, and my setup now works like a charm. With a bit of color calibration, this thing will be great.

Hopefully if someone else has this issue in the future, this posting will give them some ideas of the things to troubleshoot and rule out (perhaps even solve the issue).

I'll be taking apart the faulty HDMI to RCA converter to see if the issue can be fixed with that part. At any rate, I am happy, and marking as resolved.

(WS2801 + RPi3) No Red Color Channel From Video Grabber

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