1. บทนำ
The Waveshare Cat-1/GSM/GPRS/GNSS HAT is a versatile communication module designed for Raspberry Pi and other host devices like Arduino and STM32. Based on the A7670E module, it provides robust LTE Cat-1, 2G (GSM/GPRS/EDGE) communication, and GNSS (GPS, BeiDou, GLONASS) positioning capabilities. This HAT is ideal for a wide range of IoT applications, including remote monitoring, POS systems, industrial routers, and location-based services.
It supports various network protocols such as TCP/IP, HTTP(s), MQTT(s), FTP(s), and SSL, ensuring flexible connectivity. Additionally, it features Text-to-Speech (TTS) functionality and an onboard audio jack for voice communication and sound recording.
Figure 1.1: Waveshare Cat-1/GSM/GPRS/GNSS HAT with accessories.
2. เนื้อหาบรรจุภัณฑ์
โปรดตรวจสอบว่ารายการทั้งหมดที่ระบุไว้ด้านล่างมีอยู่ในแพ็คเกจของคุณหรือไม่:
- A7670E Cat-1/GNSS HAT x1
- สาย USB-A ถึง USB-C x1
- FPC Antenna x1
- เสาอากาศ GPS x1
- ชุดสกรู x1
รูปที่ 2.1: รายละเอียด view ของสิ่งของในบรรจุภัณฑ์
3. คุณสมบัติของผลิตภัณฑ์
The A7670E Cat-1/GNSS HAT offers a comprehensive set of features for various embedded applications:
- Broad Network Compatibility: Supports LTE-TDD, LTE-FDD, GSM, GPRS, and EDGE, with data rates up to 10Mbps downlink and 5Mbps uplink.
- Operating System and Protocol Support: Compatible with Windows and Linux. Supports TCP/IP, HTTP(s), MQTT(s), FTP(s), and SSL.
- Positioning Capabilities: Features GPS, BeiDou, and GLONASS support, along with LBS base station positioning for accurate geolocation.
- Voice and Audio Functions: Includes Text-to-Speech (TTS) for converting text to spoken words and an onboard 3.5mm audio jack for sound recording and telephone calls.
- Easy Integration and Expansion: Equipped with a standard Raspberry Pi 40PIN GPIO extension header for seamless integration. Also includes a SIM card slot, onboard USB interface for AT command testing, and 2x LED indicators for status monitoring.
รูปที่ 3.1: เกินview of the A7670E Cat-1/GNSS HAT features.
4. การตั้งค่าและการติดตั้ง
The A7670E Cat-1/GNSS HAT is designed for easy integration with Raspberry Pi boards and other compatible host devices.
4.1 การเชื่อมต่อกับ Raspberry Pi
- Ensure your Raspberry Pi is powered off.
- Carefully align the 40PIN GPIO header of the HAT with the corresponding pins on your Raspberry Pi.
- Gently press the HAT onto the GPIO header until it is securely seated.
- Insert a compatible SIM card into the SIM card slot. The module supports both 1.8V and 3V SIM cards.
- Connect the FPC antenna to the LTE antenna connector and the GPS antenna to the GNSS antenna connector on the HAT.
- Optionally, connect the USB-C cable to the HAT's USB port for AT command testing and network applications.
- Power on your Raspberry Pi.
Figure 4.1: Connecting the HAT to Raspberry Pi boards.
5. คู่มือการใช้งาน
5.1 Network Communication (Dial-Up)
The module supports dial-up networking on both Windows and Linux operating systems. Data rates are up to 10Mbps (downlink) and 5Mbps (uplink) for LTE Cat-1, up to 236.8Kbps (downlink) for EDGE, and up to 85.6Kbps (downlink) for GPRS.
รูปที่ 5.1: อดีตample of dial-up networking setup.
5.2 GNSS Positioning
The A7670E HAT integrates GPS, BeiDou, and GLONASS for accurate global navigation satellite system positioning. It also supports LBS (Location Based Service) base station positioning, providing location information even when satellite signals are weak or unavailable.
5.3 การสนับสนุนทางโทรศัพท์และ SMS
The module allows for making telephone calls and sending SMS messages using AT commands. The onboard 3.5mm audio jack facilitates audio input and output for calls and listening to TTS output.
Figure 5.2: Comprehensive communication and positioning capabilities.
6. ข้อมูลจำเพาะ
| หมวดหมู่ | พารามิเตอร์ | คำอธิบาย |
|---|---|---|
| ย่านความถี่ | แอลทีอี แคท-1 | LTE-FDD: B1, B3, B5, B7, B8, B20 |
| 2G | GSM/GPRS/EDGE: 900/1800 MHz | |
| GNSS | GPS, BeiDou, GLONASS | |
| SMS and Audio | ข้อความเอสเอ็มเอส | Supported types: MT, MO, CB, Text, PDU |
| คุณสมบัติเสียง | แจ็คเสียงขนาดมาตรฐาน 3.5 มม. สำหรับรับและส่งสัญญาณเสียง | |
| อื่น | แหล่งจ่ายไฟ | 5V (via USB port or 5V pinheader), 3.7 ~ 4.2V (via VBAT pinheader, supports 3.7V Li-ion battery power input) |
| ปริมาณการดำเนินงานtage | 3.3โวลต์ | |
| ขนาด | 65 × 30.5 มม. | |
| น้ำหนัก | 2.82 ออนซ์ (ประมาณ 80 กรัม) |
Figure 6.1: Summary of technical specifications.
7. ใบสมัคร Examples & Cloud Support
The A7670E Cat-1/GNSS HAT is highly suitable for various IoT and embedded applications, especially when combined with Waveshare.Cloud for data visualization and management.
7.1 General Application Example
The module can be used to upload device messages (e.g., temperature, humidity data) to a cloud server via MQTT(S) or HTTP(S). It can also receive messages for controlling devices or retrieving related data, enabling remote monitoring and control.
Figure 7.1: Typical application example with cloud communication.
7.2 Waveshare.Cloud Support
Waveshare.Cloud provides tutorials and demos for quick setup of smart IoT solutions. It offers large-screen data visualization displays to meet diverse application scenarios, such as smart garden solutions, server performance monitoring, and IoT GPS mobile positioning.
รูปที่ 7.2: อดีตamples of Waveshare.Cloud data visualization.
8. Pinout Definition and Dimensions
8.1 Pinout Definition
The HAT utilizes the standard Raspberry Pi 40PIN GPIO header. Key pins for module operation include:
- 5 โวลต์: กำลังไฟ 5V
- จีเอ็นดี: พื้น
- RXD: Module UART RX
- เท็กซัส: Module UART TX
- พี4: Module ON/OFF control (keep high level for >2.5s to turn on/off)
Figure 8.1: Pinout definition for the A7670E Cat-1/GNSS HAT.
8.2 ขนาดเค้าร่าง
The compact design of the HAT ensures it fits well within various projects. The module dimensions are 65mm x 30.5mm.
Figure 8.2: Outline dimensions of the module.
9 การแก้ไขปัญหา
If you encounter issues with your Waveshare Cat-1/GSM/GPRS/GNSS HAT, consider the following common troubleshooting steps:
- ไม่มีพลังงาน/ไฟ LED ดับ: Ensure the HAT is correctly seated on the Raspberry Pi's GPIO header. Check the power supply to your Raspberry Pi. Verify the 5V power input to the HAT.
- ไม่มีการเชื่อมต่อเครือข่าย: Confirm the SIM card is correctly inserted and activated with a valid plan. Check antenna connections (LTE and GNSS). Verify network coverage in your area. Ensure the module is powered on (P4 pin control).
- ระบบ GNSS ใช้งานไม่ได้: Ensure the GPS antenna is connected and placed in an open area with clear sky view. Check for any obstructions.
- คำสั่ง AT ไม่ตอบสนอง: Verify the USB connection or UART wiring. Ensure correct baud rate and serial port settings in your terminal software.
- ปัญหาด้านซอฟต์แวร์: Refer to the official Waveshare documentation and development resources for specific drivers, libraries, and example code for your operating system (Raspberry Pi OS, Windows, Linux).
For further assistance, please visit the Waveshare official webไซต์หรือติดต่อฝ่ายสนับสนุนด้านเทคนิคของพวกเขา
10. การบำรุงรักษา
To ensure the longevity and optimal performance of your Waveshare Cat-1/GSM/GPRS/GNSS HAT, follow these maintenance guidelines:
- จัดการด้วยความระมัดระวัง: Avoid dropping or subjecting the module to physical shock.
- รักษาความสะอาด: Use a soft, dry cloth to clean the module. Avoid using liquids or abrasive cleaners.
- สภาพแวดล้อม : Operate and store the module within its specified temperature and humidity ranges. Avoid extreme temperatures, direct sunlight, and high humidity.
- ไฟฟ้าสถิต: Take precautions against electrostatic discharge (ESD) when handling the module, as electronic components are sensitive to static.
- อัพเดตเฟิร์มแวร์: ตรวจสอบข้อมูลอย่างเป็นทางการของ Waveshare เป็นระยะ website for any available firmware updates for the A7670E module to ensure the best performance and compatibility.
