Whadda WPSE345 CM2302 Temperature and Humidity Sensor User Manual

1. Продукт бүтүп калдыview

The Whadda WPSE345 features the CM2302, a high-precision temperature and humidity composite sensor. This sensor utilizes advanced digital module acquisition technology and dedicated temperature and humidity sensing technology to ensure reliable and stable long-term performance. It integrates a capacitive wet sensor and a high-precision NTC temperature sensor, connected to a high-performance 8-bit microcontroller. Each CM2302 sensor undergoes calibration in a highly accurate humidity calibration room, ensuring superior quality, fast response, and strong anti-interference capabilities.

Compared to the DHT11 sensor, the CM2302 offers enhanced precision and accuracy, operating effectively across a broader range of temperatures and humidity levels.

Сүрөт 1: Алдыңкы view of the Whadda WPSE345 CM2302 Temperature and Humidity Sensor, showing the white sensor module mounted on a circuit board with three pins labeled DAT, VCC, and GND.

2. Негизги өзгөчөлүктөрү

• Сенсор түрү: CM2302 temperature and humidity composite sensor.
• Operating Voltage: 3.3 - 5.5 VDC.
• Нымдуулуктун иштөө диапазону: 0 ден 99.9 % RH.
• Humidity Response Time: 5 секунд.
• Температуранын иштөө диапазону: -40дан 80°Cге чейин.
• Жогорку ишенимдүүлүк: Ensures stable performance over time.
• Тез жооп: Quick data acquisition.
• Anti-interference Ability: Designed for robust operation in various environments.

3. Орнотуу жана туташуу

The WPSE345 sensor module is designed for easy integration into various prototyping and programming projects. It typically requires three connections: Data (DAT), Power (VCC), and Ground (GND).

3.1 Тирөөчтүн сүрөттөмөсү

3.2 Туташуу кадамдары

1. туташтыруу VCC pin of the WPSE345 sensor to the 3.3V or 5V power supply output of your microcontroller (e.g., Arduino, Raspberry Pi).
2. туташтыруу GND pin of the WPSE345 sensor to the Ground (GND) pin of your microcontroller.
3. туташтыруу DAT pin of the WPSE345 sensor to a digital input/output pin on your microcontroller. A pull-up resistor (typically 4.7kΩ to 10kΩ) between the DAT pin and VCC is often recommended for stable communication, though some modules may have this built-in.

2-сүрөт: Жогорку view of the Whadda WPSE345 CM2302 sensor board, clearly showing the DAT, VCC, and GND pin labels for connection.

4. Иштөө нускамалары

To operate the WPSE345 sensor, you will need to program your microcontroller to communicate with it using a compatible library. The CM2302 (often referred to as DHT22) uses a single-wire digital signal for data transmission.

4.1 Software Setup (Examp(Ардуино үчүн)

1. Arduino IDE орнотуу: If not already installed, download and install the Arduino IDE from the official Arduino webсайт.
2. Install DHT Sensor Library:
   • Arduino IDE ачыңыз.
   • барыңыз Sketch > Include Library > Manage Libraries...
   • Издөө "DHT sensor library" by Adafruit and install it. You may also need to install "Adafruit Unified Sensor" library.
3. Жүктөө Example Sketch:
   • барыңыз File > Мисamples > DHT sensor library > DHTtester.
   • Modify the sketch to specify the correct DHT type (DHT22/AM2302) and the digital pin you connected the sensor's DAT pin to.
4. Upload and Monitor:
   • Select your board and port from Tools > Board жана Tools > Port.
   • Upload the sketch to your microcontroller.
   • Open the Serial Monitor (Tools > Serial Monitor) чейин view the temperature and humidity readings. Ensure the baud rate matches the one set in the sketch (e.g., 9600 or 115200).

4.2 Reading Data

Once the sensor is properly connected and the microcontroller is programmed, it will periodically read and output temperature and humidity data. The data typically includes:

• Нымдуулук: Measured in percentage Relative Humidity (% RH).
• Температура: Measured in degrees Celsius (°C) or Fahrenheit (°F).

5. Техникалык тейлөө

The Whadda WPSE345 CM2302 sensor is designed for low maintenance. Follow these guidelines to ensure its longevity and accurate performance:

• Экологиялык шарттар: Operate the sensor within its specified temperature (-40 to 80 °C) and humidity (0 to 99.9 % RH) ranges. Avoid prolonged exposure to extreme conditions outside these ranges.
• Тазалык: Keep the sensor module clean and free from dust, dirt, or moisture accumulation. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
• Физикалык коргоо: Handle the sensor with care to avoid physical damage to the module or its pins.
• Сактагыч: When not in use, store the sensor in a dry, cool environment, preferably in its original packaging or an anti-static bag.

6. Кыйынчылыктарды

If you encounter issues with your WPSE345 sensor, consider the following troubleshooting steps:

• No Readings or Erratic Data:
  • Зымдарды текшерүү: Ensure all connections (VCC, GND, DAT) are secure and correctly connected to the microcontroller.
  • Электр камсыздоо: Verify that the sensor is receiving adequate power (3.3V to 5.5V DC).
  • Тартуу каршылыгы: Confirm that a 4.7kΩ to 10kΩ pull-up resistor is connected between the DAT pin and VCC, if not already integrated into the module.
  • Library Installation: Ensure the correct DHT sensor library and any dependencies (like Adafruit Unified Sensor) are properly installed in your IDE.
  • Correct Sensor Type: Double-check that your code specifies the CM2302 (DHT22) sensor type.
  • Pin аныктамасы: Verify that the digital pin number in your code matches the pin where the DAT line is connected.
• Сенсор аныкталган жок:
  • Re-upload Code: Sometimes re-uploading the code can resolve communication issues.
  • Try Another Pin: Test the sensor with a different digital pin on your microcontroller.
  • Сенсорду текшерүү: Visually inspect the sensor for any signs of physical damage.
• Туура эмес окуулар:
  • Экологиялык факторлор: Ensure the sensor is not exposed to direct sunlight, heat sources, or strong air currents that could affect readings.
  • Калибрлөө: While factory calibrated, extreme environmental changes or prolonged use in harsh conditions might affect accuracy over time. For critical applications, consider external calibration.

7. Техникалык шарттар

8. Кепилдик жана колдоо

For warranty information and technical support regarding your Whadda WPSE345 sensor, please refer to the official Velleman website or contact your point of purchase. Ensure you have your product model number (WPSE345) and any purchase details available when seeking support.

Velleman is the manufacturer of this product. For further assistance, visit their official support channels.