1. Introducere
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.
Figura 1: Față view of the EBYTE E32-900T20D LoRa Wireless Module.
2. Caracteristici cheie
- Tehnologie LoRa cu spectru extins: 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.
- Distanță lungă de comunicare: Capable of transmitting data up to 5.5 kilometers in optimal conditions.
- Interfață port serial: Easy integration with microcontrollers via UART (TX, RX).
- Moduri de lucru multiple: Offers Transmission, Wake-up, Power Saving, and Deep Sleep modes for flexible power management.
Figure 2: Illustration of LoRa spread spectrum communication benefits.
3. Specificații
| Parametru | Valoare |
|---|---|
| Numărul de model | E32-900T20D |
| Benzi de frecvență | 868 MHz / 915 MHz |
| Puterea de transmisie | 20dBm (100mW) |
| Distanța de comunicare | Până la 5.5 km (linie vizuală) |
| Interfață | UART (Serial Port) |
| Dimensiuni (L x l) | 36 mm x 21 mm |
| Producător | EBYTE |
| Dimensiuni pachet | 2.4 x 2.01 x 0.47 inci |
| Greutate | 0.71 uncii |
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.
- VCC: Intrare sursă de alimentare.
- GND: Conexiune la pământ.
- TX: Transmit data output (connects to RX of host).
- RX: 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. Configurare și conectare
- Alimentare electrică: Connect the VCC pin to a stable power source within the module's specified voltage range. Connect GND to the system ground.
- Comunicare serială: 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.
- Conexiune antenă: Securely attach a compatible 868MHz or 915MHz antenna to the module's antenna connector. An improperly connected or missing antenna can damage the module.
- Selectarea modului: Use the M0 and M1 pins to set the desired operating mode. Refer to the datasheet for specific pin configurations for each mode.
- Configurare software: 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. Moduri de operare
The E32-900T20D module supports four distinct operating modes, each optimized for different application requirements:
- Mod de transmisie: This is the standard transparent transmission mode, commonly used for continuous data exchange.
- Mod de trezire: 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.
- Modul de economisire a energiei: In this receiver-only mode, the module consumes less power. It can receive data but cannot initiate transmissions.
- Modul de somn profund: 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.
Figura 4: Pesteview of the four working modes.
7. Scenarii de aplicare
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:
- Agricultură inteligentă: Environmental monitoring, irrigation control, livestock tracking.
- Telecomanda fara fir: Industrial equipment control, smart home devices.
- Industrial Scene: Sensor data collection, asset tracking, process automation.
- Dispozitive inteligente purtabile: Low-power communication for wearable devices.
Figura 5: Examples of application scenarios for the E32-900T20D module.
8. Depanare
Dacă întâmpinați probleme cu modulul E32-900T20D, luați în considerare următorii pași de depanare:
- Nici o comunicare:
- Verificați volumul sursei de alimentaretage 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.
- Rază scurtă de comunicare:
- Ensure the antenna is securely connected and is appropriate for the operating frequency (868MHz or 915MHz).
- Verificați dacă există obstrucții fizice între module.
- Verify transmit power settings (if configurable).
- Modulul nu răspunde:
- Efectuați un ciclu de pornire/oprire.
- 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. Întreținere
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. Garanție și asistență
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-ul sau contactați echipa lor de asistență.
Producător: EBYTE
Oficial Website: http://www.cdebyte.com/
E-mail de asistență: service@cdebyte.com
