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Tiny square board green PCB silver USB-C port side 24mm 9.5mm high

MCDODO

MCDODO ATOMS3 Lite ESP32S3 Dev Kit 24.0x24.0x9.5mm 8MB Flash

SKU CH-B1W8-BTHFT

Ultra-compact 24.0×24.0×9.5 mm ESP32-S3 board with 8 MB flash, IR transmitter, RGB LED and GPIO headers for embedded IoT projects

  • Product typeSingle Board Computers
  • ESP32-S3FN8 with 8 MB SPI Flash ensures reliable wireless IoT connectivity
  • Ultra-compact 24.0 × 24.0 × 9.5 mm body with M2 mounting fits tight enclosures
  • Built-in IR transmitter LED and WS2812C-2020 RGB LED enable remote control and visual status feedback
  • HY 2.0-4P interface plus six GPIO female headers allow flexible sensor expansion
  • USB Type-C supports UiFlow2, Arduino IDE, ESP-IDF and PlatformIO for direct programming

Ultra-compact ESP32-S3 development board

The MCDODO ATOMS3 Lite is a 24.0 × 24.0 × 9.5 mm IoT edge device built around the ESP32-S3FN8 chip with 8 MB SPI flash. Its tiny footprint and integrated 3D antenna make it suitable for embedded smart devices and space-constrained node applications.

Check USB-C power and HY 2.0 connector compatibility

Verify your host can supply power and data over USB Type-C for programming and serial communication. Ensure any sensors or peripherals match the HY 2.0-4P interface pinout or the six exposed GPIO headers on pins G5, G6, G7, G8, G38 and G39.

Replaces larger ESP32 modules for tight enclosures

This board upgrades from bulkier development kits when enclosure space is at a premium and wireless connectivity is required. The jump is worth it for projects needing the IR transmitter and WS2812C-2020 RGB indicator in a 24 mm square form factor.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 77% of the 1,420 comparable items (median $44.99).

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Specifications

Product
Product typeSingle Board Computers

Questions about this item

What comes in the box and what else do I need to start developing?

The kit includes the ESP32-S3FN8 board with 8 MB SPI Flash, built-in 3D antenna, IR transmitter LED, WS2812C-2020 RGB LED, HY 2.0-4P interface and six GPIO female headers (G5/G6/G7/G8/G38/G39). You only need a USB Type-C cable and a computer running UiFlow2, Arduino IDE, ESP-IDF or PlatformIO to begin programming.

Should I choose this board or a larger variant for my project?

Choose this 24.0 × 24.0 × 9.5 mm board when space is the primary constraint and the six exposed GPIOs plus the HY 2.0-4P port cover your sensor needs. If you require more pins, additional peripherals or a larger form factor, a bigger development board would be more suitable.

How does the 8 MB SPI Flash perform in a real IoT application?

The 8 MB SPI Flash stores firmware, OTA updates and file-system data, allowing over-the-air upgrades and local logging without external memory. The ESP32-S3FN8 executes code directly from this flash, so boot and runtime speeds match typical ESP32-S3 performance for smart-home and embedded IoT tasks.

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