Description
Reviews
| 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 |
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.
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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