Introduction: Digital Humidity and Temperature Monitor

Picture of Digital Humidity and Temperature Monitor

Hi every one

Ensuring proper indoor humidity has important skin, allergen and other health benefits by inhibiting the growth of , bacteria, viruses, fungi, and etc . This Digital Temperature and Humidity Monitor allows you to check comfort conditions at a glance with this indoor humidity gauge and thermometer (temperature ) combination. It's more than accurate, above all every one can make it , let me demonstrate you how i did :))

Application Temperature & Humidity Monitor

Indoor humidity sensor (%RH)

Indoor temperature sensor (degrees Fahrenheit and Celsius)

Humidity Temperature and Dew Point (dew point temperature or dew point is the temperature at which dew forms and is a measure of atmospheric moisture )

Step 1: Electronic Components

you need this project

1- Arduino ( any arduino types )

2-DHT11 &22 (humidity and temperature sensor )

3-jumper wires (3pc )

4-Breadboard (optional )

5-Arduino usb cable

6- Arduino IDE

Step 2: Circuit Schematic

Picture of Circuit Schematic

DHT Vcc pin to 5v pin in arduino

DHT GRN pin to pin GRN pin in arduino

DHT out pin to pin 7 in arduino

Step 3: Code


dht DHT;

#define DHT11_PIN 7

void setup()




void loop()


int chk = DHT.read11(DHT11_PIN);

Serial.print("Temperature = ");


Serial.print("*C"); Serial.println();

Serial.print("Humidity = ");


Serial.print("%"); Serial.println();

double gamma = log(DHT.humidity / 100) + ((17.62 * DHT.temperature) / (243.5 + DHT.temperature));

double dp = 243.5 * gamma / (17.62 - gamma);

Serial.print("Dew point = ");


Serial.print(" *Celcius ");





you need DHT library as well here below you can download


Step 4: RESULT

Picture of RESULT

you did it !!!!! one more step , uploading code and running it, then click Serial Monitor or you can (Tools -> Serial Monitor or Ctrl + Shift + M) sensor data will appear

serial monitor will shown u date . I hope you enjoyed this project and if there is something wrong or not clear please let me know.follow me for many more projects to come

Thanks for reading .


Zakariye Abdirahman

mad about making electronic stuff :)


About This Instructable




Bio: student of Electronic Engineer
More by ZakariyeA:Motion Sensor ArduinoDigital Humidity And Temperature MonitorAir quality monitoring device using arduino
Add instructable to: