     Serial.begin(115200);
     strip.begin();
     strip.show();
-    randomSeed(analogRead(0));
+    randomSeed(40);
 }
 
 void loop() {

      intensity = Serial.read();
      pattern_one(intensity);

    }
}

void pattern_one(uint8_t intensity) {
    if(intensity == 0){
      test_index = random(294)+3;
    }
    
    strip.setPixelColor(test_index-3, strip.Color(0,0,0));

    strip.setPixelColor(test_index-1, strip.Color(128,128,128));
    strip.setPixelColor(test_index, strip.Color(intensity,intensity,intensity));
    strip.setPixelColor(test_index+1, strip.Color(intensity,intensity,intensity));
//    strip.setPixelColor(test_index+2, strip.Color(intensity,intensity,intensity));
//    strip.setPixelColor(test_index+3, strip.Color(intensity,intensity,intensity));
    test_index += 1;
    test_index = test_index % PIXELS;
    
    strip.setBrightness(intensity);
    strip.show();
