Wireless Thermometer

Using twos xbees and a tmp36, the temperature of a room can be wirelessly sent to my computer.

May 30, 2021

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remote control

Devices & Components

WROOMBEE - ESP32 WROOM Xbee form factor

Battery, 9 V

SparkFun XBee Explorer Dongle

SparkFun XBee Shield

Jumper wires (generic)

Temperature Sensor

Hardware & Tools

Solder Wire, Lead Free

Soldering iron (generic)

Software & Tools

Arduino IDE

Project description

Code

Wireless Thermometer Code

arduino

1//Project 49 - Building a Remote Control Thermometer
2
3char a;
4float   voltage=0;
5float sensor=0;
6float celsius=0;
7float fahrenheit=0;
8float   photocell=0;
9
10void setup() {
11  Serial.begin(9600);
12}
13
14void sendC()
15{
16   sensor=analogRead(0);
17  voltage=((sensor*5000)/1024);
18  voltage=voltage-500;
19   celsius=voltage/10;
20  Serial.println(" ");
21  Serial.print("Temperature:   ");
22  Serial.print(celsius,2);
23  Serial.println(" degrees C");
24}
25
26void   sendF()
27{
28  sensor=analogRead(0);
29  voltage=((sensor*5000)/1024);
30  voltage=voltage-500;
31   celsius=voltage/10;
32  fahrenheit=((celsius*1.8)+32);
33  Serial.println("   ");
34  Serial.print("Temperature: ");
35  Serial.print(fahrenheit,2);
36   Serial.println(" degrees F");
37}
38
39void getCommand()
40{
41  Serial.flush();
42   while (Serial.available() == 0)
43  {
44    //do nothing
45  }
46  while (Serial.available()   > 0)
47  {
48    a = Serial.read(); //read the number in the serial buffer
49   }
50}
51
52void loop() {
53  getCommand(); //listen for command from PC
54   switch (a)
55  {
56    case 'c':
57    //send temperature in Celsius
58      sendC();
59       break;
60    case 'f':
61      //send temperature in Fahrenheit
62      sendF();
63       break;
64  }
65}

//Project 49 - Building a Remote Control Thermometer

char a;
float   voltage=0;
float sensor=0;
float celsius=0;
float fahrenheit=0;
float   photocell=0;

void setup() {
  Serial.begin(9600);
}

void sendC()
{
   sensor=analogRead(0);
  voltage=((sensor*5000)/1024);
  voltage=voltage-500;
   celsius=voltage/10;
  Serial.println(" ");
  Serial.print("Temperature:   ");
  Serial.print(celsius,2);
  Serial.println(" degrees C");
}

void   sendF()
{
  sensor=analogRead(0);
  voltage=((sensor*5000)/1024);
  voltage=voltage-500;
   celsius=voltage/10;
  fahrenheit=((celsius*1.8)+32);
  Serial.println("   ");
  Serial.print("Temperature: ");
  Serial.print(fahrenheit,2);
   Serial.println(" degrees F");
}

void getCommand()
{
  Serial.flush();
   while (Serial.available() == 0)
  {
    //do nothing
  }
  while (Serial.available()   > 0)
  {
    a = Serial.read(); //read the number in the serial buffer
   }
}

void loop() {
  getCommand(); //listen for command from PC
   switch (a)
  {
    case 'c':
    //send temperature in Celsius
      sendC();
       break;
    case 'f':
      //send temperature in Fahrenheit
      sendF();
       break;
  }
}

Wireless Thermometer Code

arduino

1//Project 49 - Building a Remote Control Thermometer
2
3char a;
4float  voltage=0;
5float sensor=0;
6float celsius=0;
7float fahrenheit=0;
8float  photocell=0;
9
10void setup() {
11  Serial.begin(9600);
12}
13
14void sendC()
15{
16  sensor=analogRead(0);
17  voltage=((sensor*5000)/1024);
18  voltage=voltage-500;
19  celsius=voltage/10;
20  Serial.println(" ");
21  Serial.print("Temperature:  ");
22  Serial.print(celsius,2);
23  Serial.println(" degrees C");
24}
25
26void  sendF()
27{
28  sensor=analogRead(0);
29  voltage=((sensor*5000)/1024);
30  voltage=voltage-500;
31  celsius=voltage/10;
32  fahrenheit=((celsius*1.8)+32);
33  Serial.println("  ");
34  Serial.print("Temperature: ");
35  Serial.print(fahrenheit,2);
36  Serial.println(" degrees F");
37}
38
39void getCommand()
40{
41  Serial.flush();
42  while (Serial.available() == 0)
43  {
44    //do nothing
45  }
46  while (Serial.available()  > 0)
47  {
48    a = Serial.read(); //read the number in the serial buffer
49  }
50}
51
52void loop() {
53  getCommand(); //listen for command from PC
54  switch (a)
55  {
56    case 'c':
57    //send temperature in Celsius
58      sendC();
59      break;
60    case 'f':
61      //send temperature in Fahrenheit
62      sendF();
63      break;
64  }
65}

//Project 49 - Building a Remote Control Thermometer

char a;
float  voltage=0;
float sensor=0;
float celsius=0;
float fahrenheit=0;
float  photocell=0;

void setup() {
  Serial.begin(9600);
}

void sendC()
{
  sensor=analogRead(0);
  voltage=((sensor*5000)/1024);
  voltage=voltage-500;
  celsius=voltage/10;
  Serial.println(" ");
  Serial.print("Temperature:  ");
  Serial.print(celsius,2);
  Serial.println(" degrees C");
}

void  sendF()
{
  sensor=analogRead(0);
  voltage=((sensor*5000)/1024);
  voltage=voltage-500;
  celsius=voltage/10;
  fahrenheit=((celsius*1.8)+32);
  Serial.println("  ");
  Serial.print("Temperature: ");
  Serial.print(fahrenheit,2);
  Serial.println(" degrees F");
}

void getCommand()
{
  Serial.flush();
  while (Serial.available() == 0)
  {
    //do nothing
  }
  while (Serial.available()  > 0)
  {
    a = Serial.read(); //read the number in the serial buffer
  }
}

void loop() {
  getCommand(); //listen for command from PC
  switch (a)
  {
    case 'c':
    //send temperature in Celsius
      sendC();
      break;
    case 'f':
      //send temperature in Fahrenheit
      sendF();
      break;
  }
}

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