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DHT11 with Arduino
The document provides a guide for using the DHT11 temperature and humidity sensor with an Arduino. It includes a list of required equipment, sensor specifications, connection instructions, and coding steps. The author recommends using a DHT22 if available for better performance.
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Introduction of DHT11 Temperature and Humidity Sensor for Arduino projects.
List of required equipment: Laptop with Arduino IDE, Arduino Uno, USB cable, DHT11, breadboard, and jumper wires.
Details on DHT11 specifications, requiring a 10k ohm resistor, and its operational range for humidity and temperature.
Instructions for connecting the DHT11 sensor to Arduino, including resistor and pin configuration.
Guidance on obtaining code from GitHub for Arduino usage with DHT11 sensor.
Instructions to import the DHT sensor library into the Arduino IDE for functionality.
Demonstration of possible results obtained from readings by the DHT11 sensor.
DHT11 with Arduino
- 1. DHT11 Temperature and HumiditySensor with Arduino By: Yeo Kheng Meng (yeokm1@gmail.com) https://github.com/SustainableLivingLab/dht-sensor-usageStartathon (20 Feb 2016) 1
- 2. Equipment check 1. Laptopinstalled with Arduino IDE • https://www.arduino.cc/en/Main/Software 2. Arduino Uno 3. USB cable 4. DHT11 on breakout 5. Breadboard 6. 3 jumper wires 2
- 3. What is anDHT11? • Temperature and Humidity Sensor 3 Raw DHT11 • Requires resistor (10kohm) pull-up to VCC • Connections from left: VCC (3-5V), Data Out, None, GND • Humidity: 20 – 90% ± 5% • Temperature: 0 - 50°C ±2°C DHT11 with breakout Onboard pull-up resistor Connection from left: VCC, Data Out, GND *A better DHT22 version exists so use that if you have a choice
- 4. Connectivity with Arduino 4 •This is for the raw DHT11 • A raw 10k ohm resistor is required between Data and VCC • For DHT11 breakout: • 5V to + • Arduino Pin 3 to Out • GND to -
- 5. Code • Download andextract zip file • https://github.com/yeokm1/dht-sensor-usage • Remove “-master” from directory name • dht-sensor-usage-master -> dht-sensor-usage • Open “dht-sensor-usage.ino” • Try to verify/upload 5
- 6. Importing libraries 6 • ImportDHT-sensor-library-master.zip library
- 7.