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EBYTE E32-900T20D

Manuel d'utilisation du module sans fil LoRa EBYTE E32-900T20D

Modèle : E32-900T20D

1. Introduction

The EBYTE E32-900T20D is a LoRa wireless module designed for long-range, low-power data transmission. It operates in the 868MHz and 915MHz frequency bands, offering robust anti-interference capabilities and extended communication distances up to 5.5 kilometers. This module integrates a serial port interface, making it suitable for various embedded applications requiring reliable wireless connectivity.

EBYTE E32-900T20D LoRa Wireless Module front view.

Figure 1 : Face avant view of the EBYTE E32-900T20D LoRa Wireless Module.

2. Principales caractéristiques

  • Technologie LoRa à spectre étalé : Utilizes LoRa Direct Sequence Spread Spectrum for enhanced communication range and interference resistance.
  • Dual Frequency Bands: Supports both 868MHz and 915MHz operation.
  • High Transmit Power: Features a 20dBm (100mW) transmit power output.
  • Longue distance de communication : Capable of transmitting data up to 5.5 kilometers in optimal conditions.
  • Interface du port série : Easy integration with microcontrollers via UART (TX, RX).
  • Plusieurs modes de fonctionnement : Offers Transmission, Wake-up, Power Saving, and Deep Sleep modes for flexible power management.
Diagram illustrating LoRa spread spectrum communication with anti-interference and long transmission distance.

Figure 2: Illustration of LoRa spread spectrum communication benefits.

3. Spécifications

ParamètreValeur
Numéro de modèleE32-900T20D
Bandes de fréquences868 MHz / 915 MHz
Puissance de transmission20 dBm (100 mW)
Distance de communicationJusqu'à 5.5 km (en visibilité directe)
InterfaceUART (Port série)
Dimensions (L x l)36 mm x 21 mm
FabricantEBYTE
Dimensions du colis2.4 x 2.01 x 0.47 pouces
Poids0.71 onces
EBYTE E32-900T20D LoRa Wireless Module with dimensions 36mm by 21mm.

Figure 3: E32-900T20D module with physical dimensions.

4. Pin Definitions and Hardware Interface

The E32-900T20D module features a standard pin header for integration. For detailed pinout information, including specific functions for VCC, GND, TX, RX, AUX, M0, and M1 pins, please refer to the official EBYTE E32-900T20D datasheet available on the manufacturer's website. Proper connection of these pins to your microcontroller or host device is crucial for correct operation.

  • CCV: Entrée d'alimentation.
  • GND : Connexion à la terre.
  • TX : Transmit data output (connects to RX of host).
  • Réception : Receive data input (connects to TX of host).
  • AUX: Auxiliary pin, often used for status indication (e.g., data ready).
  • M0, M1 : Mode selection pins, used to configure the module's operating mode.

5. Configuration et connexion

  1. Alimentation: Connect the VCC pin to a stable power source within the module's specified voltage range. Connect GND to the system ground.
  2. Communication série : Connect the module's TX pin to the RX pin of your microcontroller or host device, and the module's RX pin to the TX pin of your host device. Ensure both devices share a common ground.
  3. Connexion d'antenne: Securely attach a compatible 868MHz or 915MHz antenna to the module's antenna connector. An improperly connected or missing antenna can damage the module.
  4. Sélection du mode : Use the M0 and M1 pins to set the desired operating mode. Refer to the datasheet for specific pin configurations for each mode.
  5. Configuration du logiciel: Configure your host device's UART settings (baud rate, parity, stop bits) to match the module's default or configured settings. The module can often be configured via AT commands through the serial interface.

6. Modes de fonctionnement

The E32-900T20D module supports four distinct operating modes, each optimized for different application requirements:

  • Mode de transmission : This is the standard transparent transmission mode, commonly used for continuous data exchange.
  • Mode réveil : Designed for low-power applications, this mode allows the transmitter to wake up the receiver by automatically adding a wake-up code before data transmission.
  • Mode économie d'énergie: In this receiver-only mode, the module consumes less power. It can receive data but cannot initiate transmissions.
  • Mode veille profonde : The lowest power consumption mode, where the module's overall power consumption is significantly reduced (e.g., to 2uA), ideal for battery-powered devices requiring minimal activity.
Infographic showing four working modes of the EBYTE LoRa module: Transmission, Wake-up, Power Saving, and Deep Sleep.

Figure 4 : Plusview of the four working modes.

7. Scénarios d'application

The E32-900T20D LoRa module's long-range and low-power characteristics make it suitable for a wide range of Internet of Things (IoT) and industrial applications:

  • Agriculture intelligente : Environmental monitoring, irrigation control, livestock tracking.
  • Télécommande sans fil : Industrial equipment control, smart home devices.
  • Industrial Scene: Sensor data collection, asset tracking, process automation.
  • Objets connectés intelligents : Low-power communication for wearable devices.
Diagram showing various application scenarios for the LoRa module, including smart agriculture, wireless remote control, industrial, and smart wearables.

Figure 5 : Examples of application scenarios for the E32-900T20D module.

8. Dépannage

Si vous rencontrez des problèmes avec votre module E32-900T20D, veuillez suivre les étapes de dépannage suivantes :

  • Pas de communication:
    • Vérifier le volume d'alimentationtage and ground connections.
    • Check serial port wiring (TX to RX, RX to TX).
    • Ensure UART baud rate, data bits, parity, and stop bits match on both devices.
    • Confirm M0 and M1 pins are set correctly for the desired operating mode.
  • Portée de communication courte :
    • Ensure the antenna is securely connected and is appropriate for the operating frequency (868MHz or 915MHz).
    • Vérifiez l'absence d'obstructions physiques entre les modules.
    • Verify transmit power settings (if configurable).
  • Module ne répondant pas :
    • Effectuez un cycle d'alimentation.
    • Check for any short circuits or incorrect wiring that might damage the module.

For persistent issues, refer to the official EBYTE datasheet or contact technical support.

9. Entretien

To ensure the longevity and optimal performance of your E32-900T20D module:

  • Keep the module in a dry environment, away from moisture and corrosive substances.
  • Avoid exposing the module to extreme temperatures or sudden temperature changes.
  • Handle the module with care to prevent physical damage to components or pins.
  • Ensure proper ventilation if operating in an enclosed space.

10. Garantie et assistance

The EBYTE E32-900T20D LoRa Wireless Module is manufactured by EBYTE. For detailed warranty information, technical support, and access to the latest datasheets and resources, please visit the official EBYTE website ou contactez leur équipe de support.

Fabricant: EBYTE

Officiel Website: http://www.cdebyte.com/

Courriel d'assistance : service@cdebyte.com

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