【Overview】

[] ESP32-S3 A7670E 4G Development Board: Based on ESP32-S3, it integrates A7670E 4G module, camera, Micro SD, and various peripherals and interfaces. Suitable for IoT applications such as 4G portable WiFi, telephone messaging, GNSS positioning, and 4G Cat-1/2G/WiFi.

【Features】

[] This product is a versatile, high-performance microcontroller development board designed by Waveshare, incorporating A7670E 4G communication module, OV universal camera interface, TF card slot, RGB colorful lights, 18650 battery slot, battery voltage measurement IC, solar charging interface, and other peripherals. It utilizes the ESP32-S3R2 chip, integrating low-power WiFi and BLE5.0, external 16MB Flash, and 2MB PSRAM. The chip also features a hardware encryption accelerator, random number generator, HMAC, and digital signature module, meeting the security requirements of IoT. Paired with the A7670E Cat-1 4G communication module, it enables mobile network connectivity, catering to low-power requirements in IoT, mobile devices, outdoor monitoring, smart homes, and more.

[] Powered by ESP32-S3R2 with a high-performance Xtensa® 32-bit LX7 dual-core processor, operating at up to 240MHz.

[] Integrated with 512KB SRAM, 384KB ROM, 2MB PSRAM, and 16MB Flash memory.

[] Integrated 2.4GHz Wi-Fi and low-power Bluetooth (Bluetooth LE) dual-mode wireless communication with superior RF performance.

[] Equipped with A7670E-FASE cellular module, supporting 4G Cat-1/2G internet access, GNSS positioning, telephone, and messaging functions.

[] Onboard USB switching IC and setting switch, switchable to A7670E's USB port for computer dial-up internet or cellular module debugging.

[] Onboard lithium battery charging, solar charging, power management, battery voltage measurement, and related protection circuits. Supports USB and solar charging, with real-time battery level measurement.

[] Onboard 18650 battery slot, with exposed VBAT pin header for external connection of 3.7V lithium battery power, equipped with reverse connection protection.

[] Rich peripheral interfaces including camera interface, Micro SD card interface, USB port, 38PIN header, facilitating easy expansion for various functions.

[] Onboard multiple dip switches for switching between camera and USB channels, avoiding interface conflicts. It can also set the power on/off of certain circuits to reduce power consumption.

[] Comes with accessories such as GNSS high-precision ceramic antenna, OV2640 camera, small speaker, and designed with an acrylic case for versatile applications.

[] Provides comprehensive documentation (including tutorials, 4G portable WiFi, and various IoT example programs) in English.

【Parameters】

Communication Parameters:

[] Supported Bands: LTE-FDD: B1, B3, B5, B7, B8, B20

[] Data Transmission:

≤5Mbps (UL)

≤10Mbps (DL)

[] GNSS: GPS, Beidou, GLONASS

Operating Parameters:

[] Power Supply: USB, 3.7V Lithium Battery, Pin Header

[] Supply Voltage: 5V (USB Port or 5V Pin Header), 3.7~4.2V (18650 Lithium Battery Interface or VBAT Pin Header)

[] Logic Level: 3.3V

【Application Areas】

[] Image Recognition: Facial Recognition, Object Recognition

[] Portable WiFi: On-the-go Internet Access

[] Smart Industry: Smart Warehousing/Workshops, Unmanned Operations

[] Digital Twin: Visual Data Analysis

[] Smart Agriculture: Smart Farms, Smart Pastures

[] IoT Applications: Other Embedded IoT Applications

【Resource Overview】

1. ESP32-S3R2

2. A7670E-FASE

3. EA3036C

DC-DC 3-channel power output

4. ETA6098

Battery charging IC

5. CN3791

Solar charging IC

6. MAX17048G

Battery voltage measurement IC

7. CH343

UART to USB IC

8. CH334

USB HUB

9. W25Q128JVSIQ

External 16MB Flash

10. FSUSB42UMX

USB switching IC

11. TXB0104PWR

Level-shifting IC

12. Camera 24PIN interface

Compatible with OV2640/OV5640 and other cameras

13. Micro SD card slot

14. USB Type-C interface

Onboard CH343 and CH334, can be used as the serial and USB ports for ESP32-S3

Onboard USB switching IC and setting switch, can be switched to A7670E's USB port

15. RESET button

16. BOOT button

17. Nano SIM card slot

18. Solar panel input interface

Can be connected to 5V/6V/9V/12V/18V solar panels

19. SMT antenna

20. ESP32-S3 WiFi interface (IPEX 1st gen)

Default uses onboard ceramic antenna, can be modified to solder external WiFi antenna

21. GNSS interface (IPEX 1st gen)

22. LTE interface (IPEX 1st gen)

23. WS2812B

RGB LEDs

24. Power indicator light

25. Battery reverse connection warning light

26. Solar input indicator light

27. Network status indicator light

28. Solar input voltage selection

Connect different voltage solar panels, solder corresponding positions

5V: Factory default, can connect 5.5V or 6V solar panels

9V/12V/18V: Can modify default positions to adapt to 9V/12V/18V solar panels

29. SY8105IADC

External input DC-DC

30. DIP switch

CAM: Control camera function on/off

HUB: Control USB HUB driver circuit power

4G: Control power for A7670E module

USB: Control USB channel selection for A7670E module

31. Battery power switch

32. 18650 battery holder

33. Microphone input

34. Speaker output

【Interface Definitions】

【Dimensions】

[] ESP32-S3-A7670E-4G

1. ESP32-S3-A7670E-4G main unit × 1

2. Transparent acrylic case and screw kit × 1

3. GNSS ceramic antenna × 1

4. OV2640 lens × 1

5. 8-ohm 2-watt 2030 speaker × 1

6. Yellow straight pin 40PIN × 1

7. USB cable Type-A to Type-C male, approximately 1m × 1

8. FPC antenna × 1

9. Screwdriver × 1

10. 2P wiring terminal × 1

11. 18650 battery × 1

12. Double-sided tape (4PCS) × 1

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