Description

The DHT11 is one of the most popular, low-cost digital sensors for measuring temperature and humidity. While standard DHT11 sensors come as a 4-pin component, this 3-pin module version is pre-mounted on a small PCB. It includes an onboard pull-up resistor and a decoupling capacitor, making it completely plug-and-play without requiring extra external components. The DHT11 module is the ultimate entry-level sensor for environmental monitoring.

Key Features:

• Ready-to-Use 3-Pin Design: Eliminates the need for breadboard wiring or adding external resistors. Simply connect power, ground, and the data line directly to your microcontroller.
• Pre-Calibrated Digital Output: Features a custom 8-bit microcontroller inside to handle the analog-to-digital conversion, ensuring accurate single-wire serial data transmission.
• High Reliability & Stability: Offers excellent long-term stability and anti-interference capability.
• Compact & Low Power: Small footprint with low power consumption, making it perfect for basic home automation and student projects.

Technical Specifications:

Pinout Configuration (3-Pin)

• VCC (+): Power input (3.3V – 5V)
• DATA (OUT): Digital Data I/O connected directly to the microcontroller pin
• GND (-): Ground

Common Applications:

• Weather Stations: Basic DIY indoor environmental monitoring.
• Home Automation: Controlling automated fans or humidifiers based on room conditions.
• Greenhouse Monitoring: Tracking humidity levels to maintain optimal plant growth.
• STEM Education: The classic introductory sensor for learning I/O communication on Arduino, Raspberry Pi, and ESP32.