HTU21D Temperature and Humidity Sensor Module

SKU: 801 Category: Sensors Tag: Sensors

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Description

HTU21D <a href=""https://robu.in/product-category/sensor/temperature-humidity-sensor/"">Temperature & Humidity Sensor</a> is a premium quality Humidity & Temperature Sensor. You can buy this Sensor from <a href=""https://robu.in/"">Robu. in</a> at a reasonable price. The HTU21D Temperature and Humidity Sensor Module is a low-cost, easy-to-use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for weather stations or humidor control systems. All you need is two lines for I2C communication and you’ll have relative humidity readings and very accurate temperature readings as a bonus. The measured time of this sensor is up to 50 msec There are only four pins that need to be hooked up in order to start using this sensor in a project. One for VCC, one for GND, and two data lines for I2C communication. This breakout board has built-in 4.7k pull-up resistors for I2C communications. If you’re hooking up multiple I2C devices on the same bus, you may want to disable these resistors. Note: Full drops of water can damage the sensor. We recommend wrapping the board in Teflon/irrigation tape for extreme conditions where water droplets may find their way into the sensor. Note : HW-520 on module doesn’t affect the working of product . <hr /> <h4>Package Includes:</h4> 1 x HTU21D Temperature and Humidity Sensor Module. 1 x Set of Header. (Unsoldered)

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Pin Connections

1 Table

Pin Connections Table 1

Board	Sensor Pin	Connection
HTU21D	VCC/GND/SDA/SCL	3.3-5V / GND / board SDA / board SCL

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HTU21D Temperature and Humidity Sensor Module

7 Examples • C/C++ | Boards: Arduino Uno, Arduino Nano, Arduino Mega, ESP32, ESP8266, STM32, Raspberry Pi Pico

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HTU21D Temperature and Humidity Sensor Module - Arduino Uno

HTU21D Temperature and Humidity Sensor Module - Arduino Nano

HTU21D Temperature and Humidity Sensor Module - Arduino Mega

HTU21D Temperature and Humidity Sensor Module - ESP32

HTU21D Temperature and Humidity Sensor Module - ESP8266

HTU21D Temperature and Humidity Sensor Module - STM32

HTU21D Temperature and Humidity Sensor Module - Raspberry Pi Pico

📄 File: htu21d_temperature_and_humidity_sensor_module_-_arduino_uno.inoArduino Uno

651 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for Arduino Uno: A4=SDA, A5=SCL. VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

📄 File: htu21d_temperature_and_humidity_sensor_module_-_arduino_nano.inoArduino Nano

652 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for Arduino Nano: A4=SDA, A5=SCL. VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

📄 File: htu21d_temperature_and_humidity_sensor_module_-_arduino_mega.inoArduino Mega

654 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for Arduino Mega: D20=SDA, D21=SCL. VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

📄 File: htu21d_temperature_and_humidity_sensor_module_-_esp32.inoESP32

653 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for ESP32: GPIO21=SDA, GPIO22=SCL. VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

📄 File: htu21d_temperature_and_humidity_sensor_module_-_esp8266.inoESP8266

661 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for ESP8266: D2(GPIO4)=SDA, D1(GPIO5)=SCL. VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

📄 File: htu21d_temperature_and_humidity_sensor_module_-_stm32.inoSTM32

668 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for STM32: PB7=SDA, PB6=SCL (Blue Pill / F103C8). VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

📄 File: htu21d_temperature_and_humidity_sensor_module_-_raspberry_pi_pico.inoRaspberry Pi Pico

663 characters

1//ekostra.com

2//electronics store in egypt

3//+201008896258

5// I2C wiring for Raspberry Pi Pico: GPIO4=SDA, GPIO5=SCL. VCC->3.3V or 5V per module label, GND->GND.

6#include <Wire.h>

7#include <Adafruit_HTU21DF.h>

9Adafruit_HTU21DF htu = Adafruit_HTU21DF();

11void setup() {

12 Serial.begin(115200);

13 Wire.begin();

14 if (!htu.begin()) {

15 Serial.println("HTU21D not found - check wiring!");

16 while (1) delay(10);

17 }

18}

20void loop() {

21 float temp = htu.readTemperature();

22 float rh = htu.readHumidity();

24 Serial.print("Temp: "); Serial.print(temp); Serial.print(" C ");

25 Serial.print("Humidity: "); Serial.print(rh); Serial.println(" %");

27 delay(1000);

28}

Project Notes:

I2C temperature + humidity sensor.

Required Libraries:

Adafruit HTU21DFGitHub

نظرة عامة ومواصفات المنتج — بالعربية

HTU21D Temperature and Humidity Sensor Module متوفر الآن في متجر إكوسترا للإلكترونيات، ضمن قسم Sensors، بسعر 195,00 EGP. كود المنتج لدينا: 801. المنتج غير متوفر حالياً — تواصل معنا عبر واتساب لمعرفة موعد توفره القادم.

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