Created
January 22, 2019 22:37
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DMX USB, FastLED RGB LED stripe, OP-Z
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| #include <SoftwareSerial.h> | |
| #include "DMXUSB.h" | |
| #include <FastLED.h> | |
| SoftwareSerial mySerial(10, 11); // RX, TX | |
| #define LED_PIN LED_BUILTIN | |
| #define DMXUSB_BAUDRATE 115200 | |
| #define NUM_LEDS 16 | |
| #define DATA_PIN 3 | |
| CRGB leds[NUM_LEDS]; | |
| void myDMXCallback(int universe, char buffer[512]) { | |
| // Serial.println("msg"); | |
| // Serial.println(universe); | |
| digitalWrite(LED_PIN, LOW); | |
| leds[0] = CRGB::Black; | |
| for (int index = 0; index < 512; index++) { | |
| int value = buffer[index]; // DMX value 0 to 255 | |
| if (value != 0) { | |
| // Serial.print(index); | |
| // Serial.print("="); | |
| // Serial.println(value); | |
| } | |
| int LEDchannel = index; // Find the LED number; can't fit a 3-channel fixture on the remaining two channels | |
| if (LEDchannel <= (NUM_LEDS * 3) - 1) { // If DMX channel (LEDchannel starts at 0) is in range of LEDs (3 channels per LED for RGB) | |
| int colorChannel = LEDchannel % 3; // Find the color channel of the LED addressed | |
| int ledID = (LEDchannel - colorChannel) / 3; // Find the FastLED index of the LED addressed | |
| if (colorChannel == 2) leds[ledID].r = value / 30; // If the channel is red, write the red value of the LED | |
| if (colorChannel == 1) leds[ledID].g = value / 30; // If the channel is green, write the red value of the LED | |
| if (colorChannel == 0) leds[ledID].b = value / 30; // If the channel is blue, write the blue value of the LED | |
| } | |
| if (universe == 0 && index < 3 && value != 0) { | |
| digitalWrite(LED_PIN, HIGH); | |
| } | |
| } | |
| FastLED.show(); // Display the frame after processing all channels | |
| } | |
| DMXUSB myDMXUsb(mySerial, DMXUSB_BAUDRATE, 0, myDMXCallback); | |
| void setup() { | |
| //Serial.begin(115200); | |
| mySerial.begin(DMXUSB_BAUDRATE); | |
| FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS); // todo wrong colors? | |
| pinMode(LED_PIN, OUTPUT); | |
| digitalWrite(LED_PIN, HIGH); delay(100); digitalWrite(LED_PIN, LOW); delay(100); | |
| digitalWrite(LED_PIN, HIGH); delay(100); digitalWrite(LED_PIN, LOW); delay(100); | |
| leds[0] = CRGB::Red; FastLED.show(); delay(100); leds[0] = CRGB::Black; FastLED.show(); | |
| } | |
| void loop() { | |
| myDMXUsb.listen(); | |
| } |
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