Beiträge von Alexander

Or the first led is broken

Try with 4.7v on my system with 5v Starts to flickering with 4.7v ok

Please connect the DATA cable individually and with a shielded cable to the LED.
And please connect a schottkey diode to the DI data bus input. to prevent a voltage spike when switching on and off the power supply.
Have long cables 2m.
With very short you may not need something like that.

hello ws2813B works great as ws281x-spi
without Arduino with Raspberry Pi Zero
Connect the first LED Bi and Gnd together
For a working system, I need a 2.2 kΩ resistor from the spi output to the led DI input.
Without resistance or with 300ohm resistance does not work,
no idea why.
5V power supply to the LED strip will not work. Only when the voltage is 4.7V-4.8V.
Maybe this is a peculiarity of the WS2813 / B
You may need a protection circuit on the data bus, otherwise the first LED will eventually fuse to overvoltage.
1.) WS281x-SPI
2.) 2.2k ohms on DI
3.) Bridge the first BI with GND to the LED
4.) Set 4.7V as power supply
5.) In the config.txt force_turbo = 1 set
requires a steady CPU clock on the Raspberry Pi.

Can I use this skatch without usb? I have no more usb ports on the pi zero wh free. I'm just talking about the spi out on spi in from the arduino. if so, what physical pin are those on the arduino nano.

The problem is that with the setting up to 40 LEDs it works very well with 225 LEDs
they start to flicker.
I suspect that the data packets are not 100% correctly timed.

I think I install an ardoino nano in between

spi ws2801 to aduino nano ws2813b / ws2812b

what do you think about the idea?

With the 20 Hz I understand it is the refresh frequency
But where can the data frequency look up or where in the code is written.
Because about the oscilloscope I measure about 446kHz +/- 10Hz data

// 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 V1.03.3 (22.10.2017)
{
// DEVICE CONFIGURATION
"device" :
{
"name" : "MyHyperionConfig",
"type" : "ws2812spi",
"colorOrder" : "grb"
},
// 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" : 0.3500,
"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" : 200,
"updateFrequency" : 100.0000,
"updateDelay" : 0
}
},
// NO V4L2 GRABBER CONFIG
// FRAME GRABBER CONFIG
"framegrabber" :
{
"width" : 115,
"height" : 64,
"frequency_Hz" : 10.0,
"priority" : 890
},
// BLACKBORDER CONFIG
"blackborderdetector" :
{
"enable" : true,
"threshold" : 0.0,
"unknownFrameCnt" : 600,
"borderFrameCnt" : 50,
"maxInconsistentCnt" : 10,
"blurRemoveCnt" : 1,
"mode" : "osd"
},
// BOOTEFFECT CONFIG
"bootsequence" :
{
"color" : [0,0,0],
"effect" : "Rainbow swirl fast",
"duration_ms" : 20000,
"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 KODI CHECK CONFIG
// NO BOBLIGHT SERVER CONFIG
// NO JSON/PROTO FORWARD CONFIG
// LED CONFIGURATION
"leds" :
[
{
"index" : 0,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.9200, "maximum" : 1.0000 }
},
{
"index" : 1,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.9756, "maximum" : 1.0000 }
},
{
"index" : 2,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.9512, "maximum" : 0.9756 }
},
{
"index" : 3,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.9268, "maximum" : 0.9512 }
},
{
"index" : 4,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.9024, "maximum" : 0.9268 }
},
{
"index" : 5,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.8780, "maximum" : 0.9024 }
},
{
"index" : 6,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.8537, "maximum" : 0.8780 }
},
{
"index" : 7,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.8293, "maximum" : 0.8537 }
},
{
"index" : 8,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.8049, "maximum" : 0.8293 }
},
{
"index" : 9,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.7805, "maximum" : 0.8049 }
},
{
"index" : 10,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.7561, "maximum" : 0.7805 }
},
{
"index" : 11,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.7317, "maximum" : 0.7561 }
},
{
"index" : 12,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.7073, "maximum" : 0.7317 }
},
{
"index" : 13,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.6829, "maximum" : 0.7073 }
},
{
"index" : 14,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.6585, "maximum" : 0.6829 }
},
{
"index" : 15,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.6341, "maximum" : 0.6585 }
},
{
"index" : 16,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.6098, "maximum" : 0.6341 }
},
{
"index" : 17,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.5854, "maximum" : 0.6098 }
},
{
"index" : 18,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.5610, "maximum" : 0.5854 }
},
{
"index" : 19,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.5366, "maximum" : 0.5610 }
},
{
"index" : 20,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.5122, "maximum" : 0.5366 }
},
{
"index" : 21,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.4878, "maximum" : 0.5122 }
},
{
"index" : 22,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.4634, "maximum" : 0.4878 }
},
{
"index" : 23,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.4390, "maximum" : 0.4634 }
},
{
"index" : 24,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.4146, "maximum" : 0.4390 }
},
{
"index" : 25,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.3902, "maximum" : 0.4146 }
},
{
"index" : 26,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.3659, "maximum" : 0.3902 }
},
{
"index" : 27,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.3415, "maximum" : 0.3659 }
},
{
"index" : 28,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.3171, "maximum" : 0.3415 }
},
{
"index" : 29,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.2927, "maximum" : 0.3171 }
},
{
"index" : 30,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.2683, "maximum" : 0.2927 }
},
{
"index" : 31,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.2439, "maximum" : 0.2683 }
},
{
"index" : 32,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.2195, "maximum" : 0.2439 }
},
{
"index" : 33,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.1951, "maximum" : 0.2195 }
},
{
"index" : 34,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.1707, "maximum" : 0.1951 }
},
{
"index" : 35,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.1463, "maximum" : 0.1707 }
},
{
"index" : 36,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.1220, "maximum" : 0.1463 }
},
{
"index" : 37,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.0976, "maximum" : 0.1220 }
},
{
"index" : 38,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.0732, "maximum" : 0.0976 }
},
{
"index" : 39,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.0488, "maximum" : 0.0732 }
},
{
"index" : 40,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.0244, "maximum" : 0.0488 }
},
{
"index" : 41,
"hscan" : { "minimum" : 0.0000, "maximum" : 0.0600 },
"vscan" : { "minimum" : 0.0000, "maximum" : 0.0244 }
}
],
"endOfJson" : "endOfJson"
}

I use the ri zero with spi input on a ws2813B.
With the oscilloscope I can measure a send clock of 50ms (20Hz).
the packets are sent bundled with 446kHz.
Can I change the send clock in the driver?

hi Guys
I have a question about the digi-dot booster it is a led driver that translates the spi protocol into WS2812.
Is it possible to connect the BOOSTER via hypercon?

https://www.led-genial.de/DIGI…I-Schnittstelle-ansteuern