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Three small green circuit boards with castellated edges and a ceramic antenna patch

KEHIPI

KEHIPI ESP32-S3 Mini Development Board 3PCS

SKU CH-Y18J-EEQTM

Pack of three ESP32-S3 boards with dual-core 240 MHz processor, 2.4 GHz Wi-Fi, Bluetooth 5, 4 MB Flash and 2 MB PSRAM

  • Dual-core 240 MHz processor handles parallel IoT tasks
  • 34 GPIO pins support SPI I2C UART I2S ADC interfaces
  • 4 GHz Wi-Fi 802.11 b/g/n connects sensors to cloud
  • Bluetooth 5 LE enables low-power links to phones or gateways
  • 4 MB Flash plus 2 MB PSRAM stores firmware and buffers data

Triple-pack ESP32-S3 boards for parallel prototyping

This pack supplies three identical ESP32-S3 Mini development boards, each built around the ESP32-S3FH4R2 module with a dual-core Xtensa LX7 processor clocked at 240MHz. Onboard memory includes 512KB SRAM, 384KB ROM, 4MB Flash and 2MB PSRAM. Integrated 2.4GHz Wi-Fi 802.11 b/g/n and Bluetooth 5 LE provide wireless connectivity for IoT edge projects.

Replaces single-board purchases when concurrent

Buyers who previously ordered one board at a time can now run firmware on multiple nodes simultaneously, accelerating mesh-network debugging or sensor-cluster validation. The jump is worth it when a project demands synchronized flashing, A/B firmware comparison or redundant gateway prototypes without waiting for reorders.

Sustained operation stays stable through low-power

Flexible clock management and independent module power-supply settings let each board throttle frequency during idle periods, reducing thermal load during long-running data-logging sessions. The castellated module design with ceramic antenna maintains consistent RF performance when boards are soldered directly onto custom carrier PCBs inside sealed enclosures.

Highlights

  • Dual-core 240 MHz processor handles parallel IoT tasks
  • 34 GPIO pins support SPI I2C UART I2S ADC interfaces
  • 4 GHz Wi-Fi 802.11 b/g/n connects sensors to cloud
  • Bluetooth 5 LE enables low-power links to phones or gateways
  • 4 MB Flash plus 2 MB PSRAM stores firmware and buffers data

Specifications

Brandwaveshare
Model3PCS ESP32-S3-Zero
Part Number3PCS ESP32-S3-Zero

Questions about this item

What board footprint do the castellated edges of the ESP32-S3 Mini fit?

The castellated module is designed for direct soldering onto a carrier board; match the pad pitch to the module outline when laying out the footprint.

How do I put the ESP32-S3 Mini into download mode for the first firmware flash?

Hold the BOOT button, press and release the RST button, then release BOOT; the USB serial port will appear ready for the flashing tool.

When should I plan to reflow or replace the onboard 4MB Flash chip?

The 4MB Flash is rated for typical endurance cycles; rework is only needed if write failures appear after extensive OTA updates.

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