Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards
Origin	-
Processor	Dual-core Xtensa LX7 up to 240 MHz
Wireless Connectivity	Wi-Fi 802.11 b/g/n, Bluetooth 5.0 LE
Cellular Module	A7670E 4G LTE Cat-1
Memory	8MB PSRAM, 4MB Flash
Camera Interface	DVP interface for image recognition
Display Interface	RGB LCD / MIPI DSI support
Operating Voltage	5V DC via USB-C or VIN pin
Dimensions	63 x 34 mm
Programming Support	Arduino IDE, ESP-IDF, MicroPython
On-board Peripherals	MicroSD slot, RGB LED, Boot/Reset buttons

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Perfect for IoT prototypes with cellular needs

This board is exactly what I needed for my remote weather station project. The 4G module connects instantly, and the camera interface works flawlessly with the ESP32-S3's AI capabilities. Setup was straightforward using the Arduino IDE.

Anonymous

Mar 29, 2026

Rating: 5/5

Ideal for university projects

Bought this for my final year capstone project. The ability to switch between WiFi and 4G makes it versatile for testing in different environments. The MicroPython support is a huge plus for rapid prototyping.

Anonymous

Mar 22, 2026

Rating: 4/5

Great hardware, documentation could be better

The build quality is excellent and the A7670E module is very stable. However, finding specific pinout details for the cellular antenna required some digging in the wiki. Once set up, it performs beautifully for image transmission.

Anonymous

Mar 21, 2026

Rating: 5/5

Impressive AI performance on a small board

I am using this for a simple face recognition doorbell. The dual-core processor handles the inference surprisingly well. Having WiFi, Bluetooth, and 4G all on one board saves so much space in my enclosure.

Anonymous

Mar 11, 2026

Rating: 4/5

Solid board but runs warm under load

Functionality is top-notch. When running continuous image processing and 4G data upload simultaneously, the board does get quite warm. I added a small heatsink which solved the issue. Otherwise, highly recommended.

Anonymous

Mar 09, 2026

Rating: 5/5

Best value S3 board with 4G

Compared to other boards with similar specs, this offers incredible value. The inclusion of the SIM card slot and the robust power management circuit makes it ready for deployment right out of the box.

5 FAQ

Q: Is the camera module included in the box?

A: No, this is a development board only. You will need to purchase a compatible DVP camera module separately, such as the OV2640 or OV5640.

Q: Does this board come with an antenna for the 4G module?

A: Yes, the package includes a 4G LTE antenna with an IPEX connector that plugs directly into the A7670E module.

Q: Which frequency bands does the A7670E support?

A: The A7670E module supports LTE Cat-1 bands B1, B3, B5, B8, B20, B28, B38, B40, and B41, making it suitable for use in Europe, Asia, Africa, and parts of Oceania.

Q: How do I enable the Bluetooth functionality?

A: Bluetooth is enabled by default in the ESP-IDF and Arduino core libraries. You simply need to include the appropriate Bluetooth library in your code and initialize it like any standard ESP32-S3 project.

Q: Can I power this board directly from a LiPo battery?

A: While the board has a 5V input, it does not have a built-in LiPo charging circuit. You should use a regulated 5V source or a separate battery management system connected to the 5V pin.

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