Temperature Sensor

1#include <Modulino.h>
2
3ModulinoThermo thermo;
4ModulinoButtons buttons;
5ModulinoBuzzer buzzer;
6
7#define BUTTON_A 0  // Button A: °C
8#define BUTTON_B 1  // Button B: °F
9#define BUTTON_C 2  // Button C: K
10
11const float tempThreshold = 30.0;
12
13enum TempUnit { UNIT_C, UNIT_F, UNIT_K };
14TempUnit tempUnit = UNIT_C;
15
16void setup() {
17  Modulino.begin();
18  thermo.begin();
19  buttons.begin();
20  buzzer.begin();
21  Serial.begin(9600);
22  Serial.print("Starting Temperature Sensor...\n");
23}
24
25void loop() {
26  float tempC = thermo.getTemperature();  // Read raw °C
27  float displayTemp = tempC;
28  String label = "°C";
29
30  // Button handling
31  if (buttons.isPressed(BUTTON_A)) {
32    tempUnit = UNIT_C;
33    buzzer.tone(880, 100);
34    delay(200);
35  } else if (buttons.isPressed(BUTTON_B)) {
36    tempUnit = UNIT_F;
37    buzzer.tone(1000, 100);
38    delay(200);
39  } else if (buttons.isPressed(BUTTON_C)) {
40    tempUnit = UNIT_K;
41    buzzer.tone(1200, 100);
42    delay(200);
43  }
44
45  // Convert based on selected unit
46  switch (tempUnit) {
47    case UNIT_C:
48      displayTemp = tempC;
49      label = "°C";
50      break;
51    case UNIT_F:
52      displayTemp = tempC * 9.0 / 5.0 + 32;
53      label = "°F";
54      break;
55    case UNIT_K:
56      displayTemp = tempC + 273.15;
57      label = "K";
58      break;
59  }
60
61  // Output result
62  Serial.print("Temp: ");
63  Serial.print(displayTemp, 2);
64  Serial.println(" " + label);
65
66  if (displayTemp >= tempThreshold)
67  {
68    Serial.print("TOO HOT: TEMPERATURE IS OR HIGHER THEN 30.00 °C\n");
69    buzzer.tone(1500, 1000);  // Beep if too hot
70  }
71  else
72  {
73    buzzer.noTone();
74  }
75  delay(1500);
76}