Temperature Control Neo Pixels with Arduino Nano

1#include <Adafruit_NeoPixel.h>  
2#include <Adafruit_Sensor.h>  
3#include <DHT.h>  
4#include <DHT_U.h>  
5#define DHTTYPE    DHT11     // DHT 11  
6#define DHTPIN 3  
7DHT_Unified dht(DHTPIN, DHTTYPE);  
8#define PIN 2 // Neo  
9Adafruit_NeoPixel strip = Adafruit_NeoPixel(8, PIN, NEO_GRB + NEO_KHZ800);  
10void setup() {  
11	 Serial.begin(115200);  
12	 dht.begin();  
13	 sensor_t sensor;  
14	 strip.begin();  
15	 strip.setBrightness(100);  
16	 strip.show();  
17}  
18void loop() {  
19	 sensors_event_t event;  
20	 dht.temperature().getEvent(&event);  
21	 Serial.print(F("Temperature: "));  
22	 float temp1 = event.temperature;  
23	 Serial.print(temp1);  
24	 Serial.println(F("°C"));  
25	   
26	 dht.humidity().getEvent(&event);  
27	 Serial.print(F("Humidity: "));  
28	 float hum1 = event.relative_humidity;  
29	 Serial.print(hum1);  
30	 Serial.println(F("%"));  
31	 if (temp1 >= 28 && temp1 < 31) {  
32	   strip.clear(); // Set all pixel colors to 'off'  
33	   for (int i = 0; i < 12; i++) { // For each pixel...  
34	     strip.setPixelColor(i, strip.Color(0, 150, 0));  
35	     strip.show();  
36	   }  
37	 }  
38	 else if (temp1 < 28) {  
39	   strip.clear();  
40	   for (int i = 0; i < 12; i++) { // For each pixel...  
41	     strip.setPixelColor(i, strip.Color(0, 0, 150));  
42	     strip.show();  
43	   }  
44	 }  
45	 else {  
46	   strip.clear();  
47	   for (int i = 0; i < 12; i++) { // For each pixel...  
48	     strip.setPixelColor(i, strip.Color(150, 0, 0));  
49	     strip.show();  
50	   }  
51	 }  
52}