Waveshare has not too long ago launched two new ESP32-S3 4G dev boards – the ESP32-S3-SIM7670G-4G and the ESP32-S3-A7670E-4G. These boards help 4G LTE Cat-1, Wi-Fi, Bluetooth, and GNSS, and include an OV2640 digital camera, and a battery holder for a 18650 battery. The essential distinction between the 2 is that the A7670E module additionally helps 2G GSM/GPRS/EDGE at 900/1800MHz whereas the SIM7670G module doesn’t.
The board has two rows of I/Os together with GPIO, I2C, SPI, ADC, and USB 2.0. It additionally has a USB-C port for energy and programming, a slot for a MicroSD card, and an possibility to attach an exterior speaker. There’s a USB switching IC and DIP change for simply connecting the module to a PC for web or debugging.
Waveshare ESP32-S3 4G Dev Boards Specification:
- Communication module
- A7670E 4G – A7670E Cat-1 4G module supporting 4G Cat-1 + 2G networking, GNSS positioning, phone calls, and SMS.
- SIM7670G 4G – SIM7670G Cat-1 4G module supporting LTE Cat-1 networking, GNSS positioning (GPS, BeiDou, GLONASS, Galileo).
- Global protection and band help
- A7670E 4G – Focuses on LTE-FDD bands extra appropriate for Europe, Southeast Asia, West Asia, Africa, China, and South Korea with further GSM/GPRS/EDGE help.
- SIM7670G 4G – Offers international protection with a broader vary of LTE-FDD and LTE-TDD bands, making it relevant worldwide, however lacks GSM/GPRS/EDGE help.
- Wireless MCU – ESP32-S3 Xtensa 32-bit LX7 dual-core, as much as 240MHz frequency, 512KB SRAM, 384KB ROM, 2.4 GHz WiFi 4 and Bluetooth 5.0
- Memory and storage
- 2MB PSRAM
- 16MB Flash storage
- Peripheral Interfaces
- OV2640 digital camera
- MicroSD card slot
- USB Type-C port used to AT instructions, GNSS positioning, firmware upgrading, program burning, and many others…
- 38-pin header
- Power Management
- Lithium battery help
- Solar charging (5V to 18V) through CN3791
- USB charging by means of ETA6098
- Battery voltage measurement utilizing MAX17048G
- Security options
- Hardware encryption
- Random quantity generator
- HMAC
- Digital Signature
- Additional options
- RGB LED
- 18650 battery holder
- GNSS high-precision ceramic antenna and
- Antenna connector – IPEX 1
- Board Dimensions – 110 x 30.44 mm
The onboard OV2640 digital camera captures video at 1600×1200 decision and 15 frames per second, providing respectable high quality. Additionally, the calling module incorporates a microphone and a speaker to allow calling performance.
The boards might be geared up with an 18650 lithium battery, which might be recharged utilizing solar energy. To safeguard the battery, the board incorporates an ETA6098 IC for battery charging, a CN3791 IC for photo voltaic charging, and a MAX17048G IC for measuring battery voltage.
Previously we’ve got coated a number of different ESP32-based 4G modules like LILYGO T-SIMCAM ESP32-S3 and LILYGO T-SIM7080G-S3 be happy to examine these out if you’re within the matter.
Waveshare gives code samples and directions utilizing VSCode (ESP-IDF) and the Arduino IDE, and particulars concerning the AT instructions for the A7670E and SIM7670G modules on their respective wiki web page, the place you’ll additionally discover extra technical info, paperwork, and drivers.
You should buy the Waveshare’s ESP32-S3 Boards from each Amazon and AliExpress. The ESP32-S3 SIM7670G 4G is available on Amazon for $56.29 and on AliExpress for $56.48. Meanwhile, the ESP32-S3 A7670E 4G is priced at $49.29 on Amazon and $34.00 on AliExpress. Both boards can be discovered on the Waveshare retailer.
Debashis Das is a technical content material author and embedded engineer with over 5 years of expertise within the business. With experience in Embedded C, PCB Design, and website positioning optimization, he successfully blends tough technical matters with clear communication
