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Waveshare releases new Espressif ESP32-S3 boards with SIMCom support for IoT projects

Waveshare has released a pair of boards based on the Espressif ESP32-S3 microcontroller and SIMCom SIM7670G or A7670E cellular modems for connecting to the Internet of Things (IoT) where Bluetooth and Wi-Fi are not available.

ESP32-S3-A7670E-4G is a feature-rich and high-performance board with built-in A7670E 4G communication module, OV (Omnivision) series camera interface, TF and SD card slot (interchangeable), RGB color LEDs, 18650 battery holder, battery voltage measurement chip, solar panel charging interface and other peripherals.

Supplied in a rectangular acrylic package, the ESP32-S3-A7670E-4 and ESP32-S3-SIM7670G-4 utilize the Espressif ESP32-S3R2 system-on-chip with two Tensilica Xtensa LX7 cores running at up to 240MHz and have:
- 512 KB static RAM (SRAM);
- 384 KB flash memory with SRAM architecture;
- 2 MB pseudostatic RAM (PSRAM);
- 16 MB flash memory;
- built-in 2.4 GHz Wi-Fi and Bluetooth Low Energy (BLE) single-band radios;
- built-in Omnivision OV2640 UXGA camera;
- USB or solar battery charging.

The difference between the two models is the choice of cellular modem. The ESP32-S3-A7670E-4G uses the SIMCom A7670E module, which provides 4G LTE-FDD and LTE-TDD Cat. 1 and 2G with voice call support and global navigation satellite system (GNSS) signal reception, including GPS. The ESP32-S3-SIM7670G-4G utilizes the SIMCOM SIM7670G modem, which lacks 2G support, voice calling and LTE-TDD capabilities, but retains satellite system (GNSS) connectivity.

In both cases, the modems can be used to provide data transmission both in projects running on the ESP32 microcontroller and on external devices. The ESP32-S3-A7670E-4G and ESP32-S3-SIM7670G-4G are available for order now at $42.99 and $48.99, respectively.