If someone can tell me what my values should be and maybe another explanation of how they got them would be fab. Sometimes Raspberry does not detect Arduino after restart. I also recently purchased a SmartThings hub and have been using IFTTT to bridge the gap between systems that do not integrate directly . It looks so cool! I will check the init string, but seems strange to me, it wasn’t changed. However I never got hyperion running so I ended up with Boblight which was far easier. Idea is to "divide" RGB LED strip power supply from Arduino to avoid power supply problems for Arduino (we do not want to think about purity of 5V on LED strip). These strips have only a single data pin, which is why before sending a lot more has to be calculated. This is my first project using programmable LED strips, but the Soraa bulbs and lighting automation I have done to date has saved me at least 30% on my electric bill. Kodi would then control Hyperion on RaspPi over network. Connect it to your multimedia center (Raspberry Pi) and use it to grab signal while playing form external device over HDMI cable to you LED TV. Because you can :) and it is easier for your eyes at night.First there is some "fresh" information. The purpose of this setup is so the Raspberry Pi can control a slave Arduino which sends the data to the LEDs and also switches the contacts on both channels of the relay board. You can be guru and write your own config file, or just get and use latest Hyperion JSON configurator Here is sketch of my LED placement.

Check out our other guides to get you started on other hardware types:Need to take one step back and figure out what these fandangled NeoPixels even are?

Very long title… but worth reading if you plan to make ambilight clone for your LED TV. Enjoy!Thanks but it’s actually calculating the prefix that i just don’t understand. Here are a lot info about this BTW: here is video boring as video but awesome if you see it in real Nice video, and yes I see small delay (I think that I have the same delay) but it is ok for me :)you are right hyperion app is very nice i just find out that i can tweak it on the fly for ambilight not just static all solid colors :) i use it for tweak colors and then edit hyperion.config.json to make it permanent. Boblight config maker shows TV rear side, while Hyperion Config shows front side. i have everything set up. A couple of Unos and Megas, I will swap that out and report back.I am relatively new to embedded devices and while I have developed some light coding chops over the years, machine logic is a bit of a different animal than I am accustomed to.

And I hope you have only positive feedback having it up and running.Thanks for a very comprehensive tutorial. I thought I should throw that out there in case having the USB grabber in the PI maybe changes things. Exact value is not mandatory.”I was really excited when I found this tutorial. If you wonder why we not use some capacitor, remember that signal on data pin is 800kHz, and capacitor in series would block DC signal, and if used in parallel will distort square signals of zeroes and ones. I use 30led/m and have 75 – but prefix had to be calculated in boblight config maker for 74 leds.Yap, calculating prefix can make problems, that’s why in comments I suggested trying +1 or -1 on the actual number of LEDs. If you put resistor it will attenuate peak levels… but that's not that we want.

If you look at Hyperion code for device type "Adalight" :_ledBuffer[3] = ((ledValues.size() – 1) >> 8) & 0xFF; // LED count high byte _ledBuffer[4] = (ledValues.size() – 1) & 0xFF;        // LED count low byte _ledBuffer[5] = _ledBuffer[3] ^ _ledBuffer[4] ^ 0x55; // ChecksumYou will see that it reads configuration file and that last two values (0xB4, 0xE1) are required for my number of LEDS (first 0 last 180, totall 181 LEDs) In the previous Arduino sketch we have defined pin 5 as Data output pin. Thanks to Hans Luijten here is the script that I have slightly modified #include "Adafruit_NeoPixel.h" // DEFINITIONS #define STARTCOLOR 0x333333  // LED colors at start #define BLACK      0x000000  // LED color BLACK #define DATAPIN    5        // Datapin choose what you want or that is available #define LEDCOUNT   181       // Number of LEDs used for boblight 178 B1 E4, 180 B3E6, 181 B4E1 (iz boblight conf -1 tj 180), 182 B5E0 #define SHOWDELAY  200       // Delay in micro seconds before showing default 200 #define BAUDRATE   500000// Serial port speed, 460800 does not work – tested with Arduino Mega, Nano, Leonardo but 500000 is working with Nano #define BRIGHTNESS 70        // Max. when i connect hdmi splitter, tv resolution goes down from 1080p to 576p and i cant change it. Or would that not be enough?Also, do you know if there is any advantage to using a power supply with a metal case and terminals, versus using one in a black plastic case? Hope that you will have better luck with next SD card. One question… I want to use this, but instead of using RPi2 as a media player, I want to use this on my Windows-based HTPC running Kodi. I have tried changing my LED count by one pixel up and down, and have gone back to the drawing board with the config a few times (getting my prefix from Boblight config maker).

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