1. Product Overview
The EBYTE E104-BT52 series comprises low-power consumption Bluetooth to serial port modules, designed for transparent transmission and various wireless applications. These modules utilize either the DA14531 or DA14535 chip solutions, supporting BLE 5.0 and BLE 5.3 protocols respectively. They are built with industrial-grade components, ensuring reliable performance in a wide range of environments.
2. Specifications
The E104-BT52 series offers various models with distinct features and specifications. Below is a detailed comparison and individual model parameters.
2.1 General Specifications
Key parameters from the comparison table:
- Chip Solutions: DA14531 (BLE5.0) or DA14535 (BLE5.3)
- Operating Voltage: 2.1~3.6V (DA14531), 1.8~3.6V (DA14535)
- Operating Temperature: -40~+85°C
- Operating Frequency Band: 2402~2480MHz
- Communication Interface: UART
- Packaging: SMD
2.2 E104-BT52X Main Parameters
- Working frequency: 2402~2480MHz
- Transmission power: 0dBm
- Measured distance: 130m
- Communication interface: UART Serial Port
- Dormant broadcast current: 9.44µA
- Working voltage: 2.1~3.6V
- Communication level: 3.3V
- Receiving sensitivity: -94dBm
- Antenna form: 3rd generation IPEX
- Size: 10×10mm
- Working temperature: -40~+85°C
- Encapsulation method: SMD
2.3 Physical Dimensions
- E104-BT52X / E104-BT52X-V5.3: 10x10mm
- E104-BT52 / E104-BT52-V5.3: 14.5x10mm
- E104-BT52PX: 16x10mm
2.4 Industrial Grade Components
3. Setup and Pin Definitions
3.1 Pin Definitions for E104-BT52 / E104-BT52-V5.3 / E104-BT52X / E104-BT52X-V5.3
3.2 Pin Definitions for E104-BT52PX
3.3 EWT104-BT52 Test Suite Pinout
The EWT104-BT52 Test Suite is designed for easy testing and development. It features a standard 2.54mm pitch female header, full IO lead-out, and LED indicators for power, data transmission/reception, and connection status, along with a reset button.
3.4 Pin-to-Pin Replacement
Modules with PCB onboard antennas (E104-BT52, E104-BT52-V5.3) can be replaced by modules with 3rd generation IPEX antennas (E104-BT52X, E104-BT52X-V5.3, E104-BT52PX) for enhanced transmission distance and smaller size, provided the pinout is compatible.
4. Operating Modes and Features
4.1 Transparent Transmission
The E104-BT52 series modules are primarily designed for transparent transmission, allowing seamless data transfer between devices via Bluetooth to serial port communication.
4.2 MAC Address Binding
The modules support MAC address binding to resolve directional connection functions in multi-slave environments. This feature allows a module to bind to up to 3 specific devices, ensuring secure and targeted communication.
4.3 Host Mode - Sniffing
In host sniffing mode, the module can discover and localize peripheral devices. The serial port outputs the MAC address and RSSI (Received Signal Strength Indicator) value of these devices in real-time, which is useful for proximity sensing and network management.
4.4 Serial Port Wake-up
Certain models (E104-BT52, E104-BT52X, E104-BT52-V5.3, and E104-BT52X-V5.3) support serial port wake-up, enabling an MCU to quickly wake the module from sleep mode via UART. This feature is crucial for low-power applications where the module needs to conserve energy.
4.5 Over-the-Air (OTA) Upgrade and Configuration
The module firmware can be remotely upgraded (OTA) and configured via a dedicated mobile phone application, providing flexibility and ease of maintenance.
4.6 Communication Distance
In a clear and open environment, with an antenna height of 2.0 meters and a transmission power of 20dBm, the measured communication distance under PHY@1Mbps conditions can reach up to 500 meters.
5. Applications
The E104-BT52 series modules are suitable for a wide range of applications due to their low power consumption, robust design, and versatile communication features.
- Smart Home systems
- Wireless meter reading
- Intelligent Building solutions
- Various Industrial applications
- Intelligent robotics
- Automated data collection systems
6. Maintenance and Troubleshooting
6.1 Low Power Consumption Management
The modules are designed for low power consumption, which helps in reducing operational costs and extending battery life in portable or remote applications. Ensure proper implementation of sleep modes and wake-up mechanisms to maximize power efficiency.
6.2 Troubleshooting Common Issues
- No Connection: Verify power supply, correct pin connections (GND, VCC, TXD, RXD), and ensure both modules are in compatible operating modes (e.g., master/slave). Check for interference in the 2.4GHz band.
- Data Transmission Errors: Confirm UART settings (baud rate, parity, data bits, stop bits) match on both ends. Check signal integrity and cable length.
- Module Not Responding: Try resetting the module using the RST pin. Ensure the operating voltage is within the specified range.
- Firmware Update Issues: Ensure a stable connection during OTA updates. Refer to the official documentation for specific update procedures and troubleshooting steps.
7. User Tips
- Antenna Placement: For optimal communication range, ensure the antenna is placed in a clear, open environment, away from metal obstructions. Consider using an external IPEX antenna for better performance if the module supports it.
- Power Supply Stability: Use a stable and clean power supply within the specified voltage range to prevent unexpected behavior or damage to the module.
- Software Configuration: Always refer to the latest official documentation and software tools from EBYTE for configuring module parameters and performing firmware updates.
- Environmental Considerations: While industrial-grade, avoid exposing the module to extreme moisture or physical stress beyond its specifications.
8. Documentation and Support
For detailed technical documentation, datasheets, and software tools, please visit the official EBYTE website:
https://www.cdebyte.com/product_serch/E104-BT52/1/
For further assistance or inquiries, please contact EBYTE customer support.
Communication Tutorial Video: A visual guide to setting up communication with the module.