I've tried this code:

int analogPin=0; int strobePin=10; int resetPin=11; int led1=1; int led2=2; int led4=4; int led7=7; int led8=8; int led12=12; int led13=13; int spectrumValue[7]; int filter=80;

void setup(){

pinMode(analogPin, INPUT); pinMode(strobePin, OUTPUT); pinMode(resetPin, OUTPUT); pinMode(led1, OUTPUT); pinMode(led2, OUTPUT); pinMode(led4, OUTPUT); pinMode(led7, OUTPUT); pinMode(led8, OUTPUT); pinMode(led12, OUTPUT); pinMode(led13, OUTPUT); digitalWrite(resetPin, LOW); digitalWrite(strobePin, HIGH); }

void loop(){

digitalWrite(resetPin, HIGH); digitalWrite(resetPin, LOW); for (int i=0;i<7;i++){ digitalWrite(strobePin, LOW); delay(30); spectrumValue[i]=analogRead(analogPin); spectrumValue[i]=constrain(spectrumValue[i], filter, 1023); spectrumValue[i]=map(spectrumValue[i], filter,1023,0,255);

digitalWrite(strobePin, HIGH);

}

analogWrite(led1,spectrumValue[0]); analogWrite(led2,spectrumValue[1]); analogWrite(led4,spectrumValue[2]); analogWrite(led7,spectrumValue[3]); analogWrite(led8,spectrumValue[4]); analogWrite(led12,spectrumValue[5]); analogWrite(led13,spectrumValue[6]);

}

and this code:

define msg7RESET 11

define msg7Strobe 10

define msg7DCout 0

const int LEDpins[7] = {1,2,4,7,8,12,13};

void setup() {

for (int x=0; x<7; x++) { pinMode(LEDpins[x], OUTPUT); } pinMode(msg7RESET, OUTPUT); pinMode(msg7Strobe, OUTPUT);

}

void loop() { digitalWrite(msg7RESET, HIGH);
delay(5); digitalWrite(msg7RESET, LOW);

for (int x = 0; x < 7; x++){
    digitalWrite(msg7Strobe, LOW);     
    delayMicroseconds(35); 
    int spectrumRead = analogRead(msg7DCout);

    int PWMvalue = map(spectrumRead, 0, 1024, 0, 255);  
    if (PWMvalue < 50)
        PWMvalue = PWMvalue / 2;       

    analogWrite(LEDpins[x], PWMvalue);
    digitalWrite(msg7Strobe, HIGH);
}

}