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Two small green circuit boards with USB-C connectors and castellated edges

LORDWORLD

LORDWORLD ESP32-C3FN4 Mini Development Board 2PCS

SKU CH-7H92-3S39C

A RISC-V microcontroller board with 2.4 GHz Wi-Fi and Bluetooth 5, 15 GPIO pins, 400 KB SRAM and 384 KB ROM, running at 160 MHz

  • RISC-V 32-bit processor runs at 160MHz for fast IoT tasks
  • 4GHz Wi-Fi 802.11 b/g/n plus Bluetooth 5 LE connects sensors wirelessly
  • 400KB SRAM and 384KB ROM with 4MB Flash store firmware locally
  • 15 GPIO pins with 3 SPI, I2C, 2 UART, I2S, 2 ADC enable flexible wiring
  • Castellated module with ceramic antenna solders direct to carrier boards

Compact RISC-V board for IoT prototypes

The LORDWORLD ESP32-C3FN4 is a mini development board built around a 32-bit single-core RISC-V processor running at up to 160MHz. It integrates 2.4GHz Wi-Fi 802.11 b/g/n and Bluetooth 5 LE, 400KB SRAM, 384KB ROM and 4MB flash. A USB Type-C port provides serial programming and power, while 15 GPIO pins expose 3 SPI, 1 I2C, 2 UART, 1 I2S and 2 ADC channels. The castellated module and onboard ceramic antenna allow direct soldering to carrier boards.

Step up from basic modules when wireless

This board replaces bare ESP32-C3 modules that require separate antenna design and flash layout. The jump is worth it when a project needs integrated 2.4GHz Wi-Fi, Bluetooth 5 LE and 4MB flash in a breadboard-friendly form factor with USB serial already wired. Low-power clock and supply controls help extend battery life in sensor nodes. The USB Type-C connector simplifies firmware uploads compared with UART-only modules.

Suits makers building compact wireless sensors

Developers creating battery-powered IoT sensors, smart-home actuators or wearable prototypes will appreciate the small footprint and castellated edges. The board is less suited for applications needing high-speed Ethernet, multiple cores or large RAM buffers. Projects requiring more than 15 GPIOs or additional peripherals such as CAN or Ethernet should look at larger development platforms.

How it compares

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

Price $29.99
Cheaper than about 71% of the 1,420 comparable items (median $44.99).

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Specifications

Product
Brand nameLORDWORLD

Questions about this item

What board space does the castellated module need for direct soldering?

The castellated module and onboard ceramic antenna are designed to be soldered directly to a carrier board, using the 15 GPIO pins and integrated interfaces such as 3 SPI, 1 I2C, 2 UART, 1 I2S, and 2 ADC.

How is the board powered and programmed for the first time?

Connect the USB Type-C port to a host computer; the integrated USB serial port full-speed controller enumerates automatically, letting you flash firmware to the 4 MB onboard Flash without an external programmer.

What long-term upkeep does the onboard Flash and antenna require?

The 4 MB onboard Flash stores firmware and can be rewritten over USB when updates are needed, while the ceramic antenna is a passive component with no moving parts and requires no periodic maintenance.

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