NeoPixel Thermometer!

1#include <Adafruit_NeoPixel.h>
2#ifdef __AVR__
3  #include <avr/power.h>
4#endif
5//  named constant for the pin the sensor is connected to
6#define PIN            6
7
8//  How many NeoPixels are attached to the Arduino?
9#define NUMPIXELS      12
10
11//  When we setup the NeoPixel library, we tell it how many pixels, and which pin to  use to send signals.
12// Note that for older NeoPixel strips you might need to  change the third parameter--see the strandtest
13// example for more information  on possible values.
14Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN,  NEO_GRB + NEO_KHZ800);
15
16const int sensorPin = A0;
17// room temperature in  Celcius
18const float baselineTemp = 20.0;
19
20void setup() {
21  // open a  serial connection to display values
22  Serial.begin(9600);
23  pixels.begin();
24  // set the LED pins as outputs
25  // the for() loop saves some extra coding
26  for (int pinNumber = 2; pinNumber < 5; pinNumber++) {
27    pinMode(pinNumber,  OUTPUT);
28    digitalWrite(pinNumber, LOW);
29  }
30}
31
32void loop() {
33  
34  // read the value on AnalogIn pin 0
35  // and store it in a variable
36  int sensorVal = analogRead(sensorPin);
37
38
39  float voltage = (sensorVal  / 1024.0) * 5.0;
40
41
42  Serial.print(", degrees C: ");
43  float temperature  = (voltage - .5) * 100;
44  Serial.print(temperature);
45
46  if (temperature  > 11 && temperature < 12.5  ) {
47    Serial.println("cold-01");
48    for(int  i=0;i<2;i++){
49
50    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
51    pixels.setPixelColor(i, pixels.Color(49,0,225)); // Moderately bright green  color.
52
53    pixels.show(); // This sends the updated pixel color to the hardware.
54
55  }
56  }
57  
58  if (temperature > 12.6 && temperature < 14  ) {
59    Serial.println("cold");
60    for(int i=0;i<2;i++){
61
62    // pixels.Color takes RGB values, from 0,0,0  up to 255,255,255
63    pixels.setPixelColor(i, pixels.Color(0,106,225)); // Moderately  bright green color.
64
65    pixels.show(); // This sends the updated pixel color  to the hardware.
66
67  }
68  }
69  if (temperature > 14.1 && temperature <  15.5 ) {
70    Serial.println("cold1");
71for(int i=0;i<3;i++){
72
73    //  pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
74    pixels.setPixelColor(i,  pixels.Color(0,203,225)); // Moderately bright green color.
75
76    pixels.show();  // This sends the updated pixel color to the hardware
77
78  }
79  }
80  if  (temperature > 15.6 && temperature < 17 ) {
81    Serial.println("cold2");
82for(int  i=0;i<4;i++){
83
84    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
85    pixels.setPixelColor(i, pixels.Color(0,225,148)); // Moderately bright green  color.
86
87    pixels.show(); // This sends the updated pixel color to the hardware.
88
89  }
90  }
91  if (temperature > 17.1 && temperature < 18.5 ) {
92    Serial.println("cold3");
93for(int  i=0;i<5;i++){
94
95    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
96    pixels.setPixelColor(i, pixels.Color(0,225,21)); // Moderately bright green  color.
97
98    pixels.show(); // This sends the updated pixel color to the hardware.
99
100
101  }
102  }
103  if (temperature > 18.6 && temperature < 20 ) {
104    Serial.println("cold4");
105for(int  i=0;i<6;i++){
106
107    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
108    pixels.setPixelColor(i, pixels.Color(115,225,0)); // Moderately bright green  color.
109
110    pixels.show(); // This sends the updated pixel color to the hardware.
111
112
113  }
114  }
115  if (temperature > 21.1 && temperature < 22.5 ) {
116    Serial.println("cold5");
117for(int  i=0;i<7;i++){
118
119    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
120    pixels.setPixelColor(i, pixels.Color(216,225,0)); // Moderately bright green  color.
121
122    pixels.show(); // This sends the updated pixel color to the hardware.
123
124
125  }
126  }
127  if (temperature > 22.6 && temperature < 24 ) {
128    Serial.println("cold6");
129for(int  i=0;i<8;i++){
130
131    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
132    pixels.setPixelColor(i, pixels.Color(225,179,0)); // Moderately bright green  color.
133
134    pixels.show(); // This sends the updated pixel color to the hardware.
135
136
137  }
138  }
139  if (temperature > 24.1 && temperature < 25.5 ) {
140    Serial.println("cold7");
141for(int  i=0;i<9;i++){
142
143    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
144    pixels.setPixelColor(i, pixels.Color(225,62,0)); // Moderately bright green  color.
145
146    pixels.show(); // This sends the updated pixel color to the hardware.
147
148
149
150  }
151  }
152  if (temperature > 25.6 && temperature < 27 ) {
153    Serial.println("cold8");
154for(int  i=0;i<10;i++){
155
156    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
157    pixels.setPixelColor(i, pixels.Color(225,0,0)); // Moderately bright green color.
158
159    pixels.show(); // This sends the updated pixel color to the hardware.
160
161
162
163  }
164  }
165  if (temperature > 27.1 && temperature < 28.5 ) {
166    Serial.println("cold9");
167for(int  i=0;i<11;i++){
168
169    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
170    pixels.setPixelColor(i, pixels.Color(225,0,0)); // Moderately bright green color.
171
172    pixels.show(); // This sends the updated pixel color to the hardware.
173
174
175  }
176  }
177  if (temperature > 28.6 && temperature <30) {
178    Serial.println("cold10");
179for(int  i=0;i<12;i++){
180
181    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
182    pixels.setPixelColor(i, pixels.Color(225,0,0)); // Moderately bright green color.
183
184    pixels.show(); // This sends the updated pixel color to the hardware.
185
186
187
188  }
189  }
190delay(5000);
191pixels.clear();
192
193}
194