light sensor controlling LED

Projects Programming
1

my light sensor code is half working as it turns on 1 light when it is dark and turns it off when it is not. Two problems, however. The light is green I need it to be white and also only one light is lighting up. Also, want the code to fade the light gradually. (my codes below) any help is appreciated.

#include <FastLED.h>

int LDR_Pin = A0;
int sensorValue;
const int ledPin = 5;
const int LedOn_StartMinLightLevel = 150;

#define LED_PIN 5
#define NUM_LEDS 35

CRGB leds[NUM_LEDS];

void setup() {

FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);

Serial.flush();
Serial.begin(9600);
}
void loop() {

sensorValue = analogRead(A0);

Serial.println(analogRead(LDR_Pin));

int outputValue = 400 - sensorValue;

if(outputValue < LedOn_StartMinLightLevel)
{
outputValue =0;
}
int resultValue = map (outputValue,0,400,0,255);

digitalWrite(ledPin,resultValue);

FastLED.show();
delay(100);

}

2

op4732550:
my light sensor code is half working as it turns on 1 light when it is dark and turns it off when it is not. Two problems, however. The light is green I need it to be white and also only one light is lighting up. Also, want the code to fade the light gradually. (my codes below) any help is appreciated.

#include <FastLED.h>

int LDR_Pin = A0;
int sensorValue;
const int ledPin = 5;
const int LedOn_StartMinLightLevel = 150;

#define LED_PIN 5
#define NUM_LEDS 35

CRGB leds[NUM_LEDS];

void setup() {

FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);

Serial.flush();
Serial.begin(9600);
}
void loop() {

sensorValue = analogRead(A0);

Serial.println(analogRead(LDR_Pin));

int outputValue = 400 - sensorValue;

if(outputValue < LedOn_StartMinLightLevel)
{
outputValue =0;
}
int resultValue = map (outputValue,0,400,0,255);

digitalWrite(ledPin,resultValue);

FastLED.show();
delay(100);

}

What is the value of 'sensorValue' in light versus in dark?

3

they are like 2 to 8. usually not highter than 18

4 
  sensorValue = analogRead(LDR_Pin);
  
  Serial.println(sensorValue);

Please remember to use code tags when posting code

I can't see where you set the colour of the LEDs

5

i didn't see the colour and sill only one lights up. Im not used to working with led strips.