David Madison
GitHub
commit
93c85a8f3a
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// Slightly modified Adalight protocol implementation that uses FastLED
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// library (http://fastled.io) for driving WS2811/WS2812 led strip
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/* LEDstream_FastLED
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*
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* Modified version of Adalight protocol that uses the FastLED
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* library (http://fastled.io) for driving led strips.
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*
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* http://github.com/dmadison/Adalight-FastLED
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* Last Updated: 2016-12-21
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*/
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#include "FastLED.h"
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// -- General Settings
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#define NUM_LEDS 80 // strip length
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#define LED_PIN 6 // Arduino data output pin
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#define BRIGHTNESS 255 // maximum brightness
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#define NUM_LEDS 80 // strip length
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#define LED_PIN 6 // Arduino data output pin
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#define GROUND_PIN 10 // additional grounding pin (optional)
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#define BRIGHTNESS 255 // maximum brightness
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#define SPEED 115200 // serial port speed, max available
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//#define CALIBRATE // uncomment to set calibration mode
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// --- FastLED Setings
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#define LED_TYPE WS2812B // led strip type for FastLED
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#define COLOR_ORDER GRB // color order for bitbang
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// If no serial data is received for a while, the LEDs are shut off
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// automatically. Value in milliseconds.
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static const unsigned long serialTimeout = 150000; // 150 seconds
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// --- Serial Settings
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#define SPEED 115200 // serial port speed, max available
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static const unsigned long // time before LEDs are shut off, if no data
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serialTimeout = 150000; // 150 seconds
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// -- Optional Settings (uncomment to add)
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//#define GROUND_PIN 10 // additional grounding pin (optional)
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//#define CALIBRATE // sets all LEDs to the color of the first
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// --------------------------------------------------------------------
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#include <FastLED.h>
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CRGB leds[NUM_LEDS];
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uint8_t * ledsRaw = (uint8_t *)leds;
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@ -39,18 +54,28 @@ static const uint8_t magic[] = {
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#define MODE_HEADER 0
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#define MODE_DATA 2
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void setup()
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{
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pinMode(GROUND_PIN, OUTPUT);
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digitalWrite(GROUND_PIN, LOW);
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FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
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void setup(){
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#ifdef GROUND_PIN
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pinMode(GROUND_PIN, OUTPUT);
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digitalWrite(GROUND_PIN, LOW);
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#endif
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FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
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FastLED.setBrightness(BRIGHTNESS);
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Serial.begin(SPEED);
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adalight();
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}
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void adalight(){
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// Dirty trick: the circular buffer for serial data is 256 bytes,
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// and the "in" and "out" indices are unsigned 8-bit types -- this
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// much simplifies the cases where in/out need to "wrap around" the
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// beginning/end of the buffer. Otherwise there'd be a ton of bit-
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// masking and/or conditional code every time one of these indices
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// needs to change, slowing things down tremendously.
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uint8_t
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buffer[256],
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indexIn = 0,
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@ -69,8 +94,6 @@ void setup()
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int32_t
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outPos = 0;
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Serial.begin(SPEED); // Teensy/32u4 disregards baud rate; is OK!
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Serial.print("Ada\n"); // Send ACK string to host
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lastByteTime = lastAckTime = millis();
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@ -166,5 +189,5 @@ void setup()
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void loop()
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{
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// Not used. See note in setup() function.
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// Not used. See note in adalight() function.
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}
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20
README.md
20
README.md
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@ -1,29 +1,29 @@
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## Synopsis
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This is the standard Adalight library, modified to work with the FastLED library ([fastled.io](http://fastled.io)) and 3-pin WS2812B LED strips (2016-era Adafruit NeoPixels).
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This is the Adalight library with the Arduino code modified to use [FastLED](https://github.com/FastLED/FastLED) ([fastled.io](http://fastled.io)). This expands Adalight to, in theory, work with [any supported FastLED strip](https://github.com/FastLED/FastLED/wiki/Chipset-reference) including WS2812B (aka Adafruit NeoPixels).
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In addition to ambilight setups, the protocol can be used to stream any color data from a computer to a WS2812B strip (data rate limited by serial throughput).
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In addition to ambilight setups, the protocol can be used to stream *any* color data from a computer to supported LED strips (data rate limited by serial throughput).
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## Configuration
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Open the WS2812B file in the Arduino IDE and edit the definitions at the top for your setup. Specifically:
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Open the LEDstream_FastLED file in the Arduino IDE and edit the setting definitions at the top for your setup. These include:
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- Number of LEDs
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- LED data pin
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- LED grounding pin (optional)
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- Brightness
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- Max brightness
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- LED type
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- LED color order
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- Serial speed
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- Serial timeout length
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There are also optional settings to configure a dedicated ground pin and to put the Arduino into a "calibration" mode, where all LED colors match the first LED.
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Upload to your Arduino and use a corresponding PC application to stream color data. The Processing files are included, though I would recommend using Patrick Siegler's (@psieg) fork of Lightpacks's Prismatik, which you can find [here](https://github.com/psieg/Lightpack).
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## Tutorial
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If you'd like you can follow Adafruit's tutorial, which is fairly comprehensive for the WS2801 they use but is otherwise out of date. You can find the tutorial here:
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<https://learn.adafruit.com/adalight-diy-ambient-tv-lighting>
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## Issues and LED-types
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I've only tested the code with the WS2812B strips I have on hand, but so far it performs flawlessly. If you find an issue with the code or can confirm that it works with another chipset, please let me know!
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## License
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