Hello,
i am new to this forum.. i have already completed building ambilight for any HDMI source but i have a problem with led brightness. ihave read somewhere tht you can increase brightness without effecting your gamma and color
Things: Raspberry pi 3 with hyperion installed
- arduino uno r3 connected to raspberry via usb
- ws2801 5050 (total 69leds) led powered by 5v 8A power supply connected to arduino
i have 4 hdmi input
1.STB
2. PS3
3. RPI3
4. My laptop
all these are connected to 5 port hdmi switcher and the output goes to 2 port hdmi spliter
2 port hdmi splitter - one output goes to tv and another one goes to hdmi2av
from hdmi2av - one video rc cable to easycap video grabber and grabber usb to raspberry pi
i have set gamma and color correction in hyperion
the only problem is led brightness
my arduino sketch :-
#include "FastLED.h"
// How many leds in your strip?
#define NUM_LEDS 69
// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN. For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806 define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 11
#define CLOCK_PIN 13
#define COLOR_ORDER RBG
// Adalight sends a "Magic Word" (defined in /etc/boblight.conf) before sending the pixel data
uint8_t prefix[] = {'A', 'd', 'a'}, hi, lo, chk, i;
// Baudrate, higher rate allows faster refresh rate and more LEDs (defined in /etc/boblight.conf)
#define serialRate 460800
// Define the array of leds
CRGB leds[NUM_LEDS];
void setup() {
// Uncomment/edit one of the following lines for your leds arrangement.
// FastLED.addLeds<TM1803, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<TM1804, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<TM1809, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2811, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2812, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
// FastLED.addLeds<UCS1903, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<UCS1903B, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<GW6205, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<GW6205_400, DATA_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<WS2801, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<SM16716, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<LPD8806, RGB>(leds, NUM_LEDS);
FastLED.addLeds<WS2801, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<SM16716, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
// FastLED.addLeds<LPD8806, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
// initial RGB flash
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(serialRate);
Serial.print("Ada\n"); // Send "Magic Word" string to host
}
void loop() {
// wait for first byte of Magic Word
for(i = 0; i < sizeof prefix; ++i) {
waitLoop: while (!Serial.available()) ;;
// Check next byte in Magic Word
if(prefix == Serial.read()) continue;
// otherwise, start over
i = 0;
goto waitLoop;
}
// Hi, Lo, Checksum
while (!Serial.available()) ;;
hi=Serial.read();
while (!Serial.available()) ;;
lo=Serial.read();
while (!Serial.available()) ;;
chk=Serial.read();
// if checksum does not match go back to wait
if (chk != (hi ^ lo ^ 0x55))
{
i=0;
goto waitLoop;
}
memset(leds, 0, NUM_LEDS * sizeof(struct CRGB));
// read the transmission data and set LED values
for (uint8_t i = 0; i < NUM_LEDS; i++) {
byte r, g, b;
while(!Serial.available());
r = Serial.read();
while(!Serial.available());
g = Serial.read();
while(!Serial.available());
b = Serial.read();
leds.r = r;
leds.g = g;
leds.b = b;
}
// shows new values
FastLED.show();
}
