How to Use SIM7600-4G-Hat-B: Examples, Pinouts, and Specs

The SIM7600-4G-Hat-B is a 4G LTE communication module manufactured by Waveshare, designed specifically for Raspberry Pi. It provides high-speed mobile data connectivity and GPS functionality, making it an ideal solution for IoT applications, remote monitoring, and location-based services. This module supports multiple communication protocols, including LTE, GSM, and GPRS, ensuring reliable and versatile connectivity.

• IoT (Internet of Things) devices requiring mobile data connectivity
• GPS-based tracking and navigation systems
• Remote monitoring and control of devices
• Smart agriculture and environmental monitoring
• Vehicle telematics and fleet management
• Wireless data transmission in industrial automation

Below are the key technical details and pin configurations for the SIM7600-4G-Hat-B:

The SIM7600-4G-Hat-B connects to the Raspberry Pi via GPIO pins. Below is the pin configuration:

1. Hardware Setup:

   • Attach the SIM7600-4G-Hat-B to the Raspberry Pi GPIO header.
   • Connect the main LTE antenna and GPS antenna to their respective ports.
   • Insert a valid SIM card into the SIM card slot.
   • Power the Raspberry Pi and ensure the module is receiving 5V power.

2. Software Setup:

   • Install the required drivers and libraries for the SIM7600 module on the Raspberry Pi.
   • Configure the UART interface on the Raspberry Pi by enabling the serial port in the Raspberry Pi configuration menu.
   • Use AT commands to communicate with the module for tasks such as sending SMS, establishing a data connection, or retrieving GPS data.

3. Example Code for Arduino UNO: If you are using the SIM7600 module with an Arduino UNO, you can use the following example code to send an SMS:

   #include <SoftwareSerial.h>
   
   // Define RX and TX pins for SoftwareSerial
   SoftwareSerial sim7600(10, 11); // RX = pin 10, TX = pin 11
   
   void setup() {
     Serial.begin(9600); // Initialize Serial Monitor
     sim7600.begin(9600); // Initialize SIM7600 communication
   
     // Send AT command to check module status
     sim7600.println("AT");
     delay(1000);
     while (sim7600.available()) {
       Serial.write(sim7600.read()); // Print response to Serial Monitor
     }
   
     // Send SMS command
     sim7600.println("AT+CMGF=1"); // Set SMS mode to text
     delay(1000);
     sim7600.println("AT+CMGS=\"+1234567890\""); // Replace with recipient's phone number
     delay(1000);
     sim7600.print("Hello, this is a test message from SIM7600!"); // SMS content
     delay(1000);
     sim7600.write(26); // Send Ctrl+Z to send the message
   }
   
   void loop() {
     // No actions in loop
   }
   

   Note: Replace +1234567890 with the recipient's phone number. Ensure the Arduino is powered properly and the SIM7600 module is connected to the correct pins.

• Ensure the SIM card has an active data plan and is compatible with the supported LTE bands.
• Use the provided antennas for optimal signal strength and GPS accuracy.
• Avoid powering the module directly from the Raspberry Pi if the power supply is insufficient. Use an external 5V power source if necessary.
• Handle the module carefully to avoid damaging the SIM card slot or antenna connectors.

1. Module Not Powering On:

   • Ensure the 5V and GND pins are properly connected.
   • Press and hold the PWRKEY pin for 1-2 seconds to turn on the module.

2. No Network Connection:

   • Check if the SIM card is inserted correctly and has an active data plan.
   • Verify that the LTE bands supported by the module match the network provider's bands.
   • Ensure the main antenna is securely connected.

3. GPS Not Working:

   • Ensure the GPS antenna is connected to the correct port.
   • Test the module outdoors or near a window for better satellite visibility.

4. No Response to AT Commands:

   • Verify the UART connection between the Raspberry Pi/Arduino and the module.
   • Check the baud rate settings in your code or terminal software.

Q: Can I use the SIM7600-4G-Hat-B with microcontrollers other than Raspberry Pi?
A: Yes, the module can be used with other microcontrollers like Arduino, provided they support UART communication.

Q: Does the module support voice calls?
A: Yes, the SIM7600 module supports voice calls in addition to SMS and data communication.

Q: How can I update the firmware of the SIM7600 module?
A: Firmware updates can be performed via the USB interface using the manufacturer's tools and instructions.

Q: What is the maximum data speed supported by the module?
A: The SIM7600 module supports LTE Cat-4 with download speeds up to 150 Mbps and upload speeds up to 50 Mbps.