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Ambilight System
An ambilight system is a system made with a screen that has leds on its back along the edges to imitate the colours that are present on the screen itself to create a more cinematic experience. The ambilight is generally a feature for these displays, being built into them directly. I plan on making a DIY ambilight system for my screen using an led strip and the Arduino uno board.
The idea came to me when I was watching a movie at a friend's house that had a tv screen with such a system implemented. I thought it was very interesting and wanted to make one for my pc's display.
I think this is a good idea because it allows you to add an extra add-on to your display without having to pay for new expensive screen.
General Description
The way it works is you take an LED strip and mount it on the back edges of your screen. You connect it to one of the input pins on Arduino. Thankfully, there is a library called “Fastled” that makes our coding easier when it comes to programming it. Using a free app for windows called “Adalight” we can enable our DIY made ambilight system to properly follow the colors that are on screen.
Hardware Design
The needed components are: Arduino Uno Wires LED Strip A screen A power supply A pc with windows on it
Software Design
(Still in progress) In the Arduino IDE we also use the Fastled library to help with the animations for our led strip. We also use an app called “Prismatik” to help connect our DIY ambilight system to the pc.
LEDS.showColor(CRGB(255, 0, 0)); delay(500); LEDS.showColor(CRGB(0, 255, 0)); delay(500); LEDS.showColor(CRGB(0, 0, 255)); delay(500); LEDS.showColor(CRGB(0, 0, 0));
Serial.begin(baudrate);
Serial.print("Dinca\n"); // Send initial magic word
lastByteTime = lastWordTime = millis(); // Set initial counters
}
void loop(){
t = millis(); // Save current time
// If there is new serial data
if((currByte = Serial.read()) >= 0){
lastByteTime = lastWordTime = t; // Reset timeout counters
switch(mode) {
case Header:
headerMode();
break;
case Data:
dataMode();
break;
}
}
else {
// No new data
timeouts();
}
}
void headerMode(){
static int headPos, hi, lo, chk;
if(headPos < MAGICSIZE){
// Check if magic word matches
if(currByte == magic[headPos]) {headPos++;}
else {headPos = 0;}
}
else{
// Magic word matches! Now verify checksum
switch(headPos){
case HICHECK:
hi = currByte;
headPos++;
break;
case LOCHECK:
lo = currByte;
headPos++;
break;
case CHECKSUM:
chk = currByte;
if(chk == (hi ^ lo ^ 0x55)) {
// Checksum looks valid. Get 16-bit LED count, add 1 and multiply by 3 for R,G,B
D_LED(1);
bytesRemaining = 3L * (256L * (long)hi + (long)lo + 1L);
outPos = 0;
memset(leds, 0, NUM_LEDS * sizeof(struct CRGB));
mode = Data;
}
headPos = 0; // Reset header position regardless of checksum result
break;
}
}
}
void dataMode(){
// If LED data is not full
if (outPos < sizeof(leds)){
ledsRaw[outPos++] = currByte; // Issue next byte
}
bytesRemaining--;
if(bytesRemaining == 0) {
mode = Header; // Begin next header search FastLED.show(); D_FPS; D_LED(0); SERIAL_FLUSH; }
}
void timeouts(){
if((t - lastWordTime) >= 1000) {
Serial.print("Dinca\n"); // Send magic word to host
lastWordTime = t; // Reset counter
// If no data received for an extended time, turn off all LEDs.
if(SerialTimeout != 0 && (t - lastByteTime) >= (uint32_t) SerialTimeout * 1000) {
memset(leds, 0, NUM_LEDS * sizeof(struct CRGB));
FastLED.show();
mode = Header;
lastByteTime = t; // Reset counter
}
}
}
Rezultate Obţinute
Concluzii
Download
Jurnal
(Inca aștept sa îmi vina toate componentele comandate)
Bibliografie/Resurse
