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ESP-C3-32S-Kit ESP32-C3 WiFi Development Board





This is an entry-level development board based on Espressif ESP32-C3 SoC, which is equipped with a RISC-V 32-bit single-core processor, operating frequency up to 160 MHz, and supports secondary development without using other microcontrollers or processors. The ESP32-C3 is a highly integrated low-power Wi-Fi and Bluetooth system-level chip (SoC), designed for various applications such as the Internet of Things (IoT), mobile devices, wearable electronics, smart homes, etc.


  • Onboard ESP-C3-32S module that comes with a PCB antenna.
  • Onboard CH340, USB to UART converter.
  • RGB 3-in-1 LED, convenient for secondary development.
  • USB port for power input, firmware programming, or UART debugging.
  • 2x15pin extension headers, breakout all the I/O pins of the module.
  • 2x keys, used as reset or user-defined.


  • Complete Wi-Fi 802.11b/g/n, 1T1R mode data rate up to 150Mbps.
  • Support BLE5.0 and rate support: 125Kbps, 500Kbps, 1Mbps, 2Mbps.
  • Onboard ESP32-C3 chip, 32-bit RISC-V single-core processor, supports a clock frequency of up to 160 MHz, with 400 KB SRAM, 384 KB ROM, and 8KB RTC SRAM.
  • Support UART/PWM/GPIO/ADC/I2C/I2S interface, temperature sensor, pulse counter.
  • SMD-38 package.
  • Integrated Wi-Fi MAC/ BB/RF/PA/LNA/BLE.
  • Support multiple sleep modes, deep sleep electric current is less than 5uA.
  • UART rate up to 5Mbps.
  • Support STA/AP/STA+AP mode and mix mode.
  • Support Smart Config (APP)/AirKiss (WeChat) of Android and IOS One-click network configuration.
  • Support UART port local upgrade and remote firmware upgrade (FOTA).
  • General AT commands can be better understood.
  • Support secondary development, integrated Linux development environment.
  • ESP-C3-32S module acquiesces in using the built-in 2MByte Flash, meanwhile supporting the external Flash version.


AT Firmware


Documents for second development

  1. Secondary development SDK source code address:
  2. WeChat applet Bluetooth + WiFi dual control Ai-Thinker ESP32-C3 module application demonstration:
  3. WeChat applet Bluetooth + WiFi dual control Ai-Thinker ESP32-C3 module application demonstration source code:


  1. Pin definition


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