OMGS3 ESP32-S3 Compact Board is the world’s smallest ESP32-S3 dev board with High-gain 3D antenna

Unexpected Maker has recently released OMGS3 ESP32-S3 Compact Board which the company is calling the world’s smallest yet full features ESP32-S3 dev board with just 25x10mm in size. Which in contrast replaces the Nano S3 and TinyS2 dev board which we have written about in court previous post.

The OMGS3 ESP32-S3 Compact Board includes dual-core processing, Wi-Fi, Bluetooth, ample memory, a low-power RGB LED, USB connectivity, and support for LiPo batteries. These features make this device suitable for applications like Internet of Things projects(IoT), wearables, home automation, robotics, and any other project needing compact, capable, and connected hardware.

Unexpected Maker OMGS3 ESP32-S3 Compact Board Specification

• SoC: Espressif ESP32-S3-PICO
  • Dual-core 32-bit Xtensa LX7 @ up to 240 MHz
  • 1x RISC-V Ultra Low Power Co-processor
  • 512KB SRAM
  • 8MB QSPI Flash, 2MB QSPI PSRAM
• Wireless Connectivity:
  • 2.4GHz WiFi 802.11b/g/n
  • Bluetooth 5.0 LE + Mesh
• USB:
  • Native USB 2.0 OTG & USB Serial JTAG
  • D+/D- pins for external USB connector
• Power Management:
  • 700mA 3.3V LDO Regulator
  • Ultra Low Deep Sleep Current
  • LiPo Battery Charging
  • I2C Battery Fuel Gauge
• I/Os:
  • 17x GPIO
  • 2x 12-bit SAR ADC (20 channels)
  • 3x UART, SPI, I2C, I2S, SDIO, and more
• LED: Low-power RGB LED (1010 Neopixel)
• Antenna: 3D High-Gain Antenna
• Other Features:
  • Surface-mountable or solderable pads
  • VBUS Sense, I2C Fuel Gauge
• Dimensions: 25mm x 10mm x 2.6mm
• Operating Temperature: -40°C to +85°C
• Certifications: CE/FCC

The OMGS3 board is compact and like the Nano S3 board, it supports various frameworks like Espressif IDF, Arduino, CircuitPython, and MicroPython. Additionally, the board supports nanoFramework, enabling C# development on microcontrollers. Comprehensive documentation, including hardware details, is available on the documentation website and GitHub.

On top of the above features, it adds support for VBUS and VBAT sensing. But when I thoroughly checked the board I found that this board uses the ESP32-S3-PICO SiP compared to the ESP32-S3FN8 SoC found on the Nano S3 meaning it has less (2MB vs 8MB) PSRAM and fewer GPIO pins.

The OMGS3 ESP32-S3 Compact Board is available for $17 with CircuitPython preinstalled on Unexpected Maker’s website. Additional details and purchases can also be found on that same page.

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