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ESPRIT-C3 - ESP32-C3 in Arduino UNO form factor

ESPRIT-C3 - ESP32-C3 in Arduino UNO form factor
ESPRIT-C3 - ESP32-C3 in Arduino UNO form factor
Brand: Freematics
Product Code: ESPR-C3
Availability: In Stock
Price: US$29.90

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Freematics ESPRIT-C3 is an Espressif ESP32-C3 RISC-V development board in Arduino UNO form factor with extra I2C, UART, JTAG interfaces.


  • Compatible with Arduino UNO pinouts
  • Up to 240MHz clock frequency
  • 520kB internal SRAM, 4MB Flash
  • Integrated 802.11 BGN WiFi and dual-mode Bluetooth (classic and BLE)
  • Onboard xBee socket for pluggable cellular modules
  • I2C and serial UART pinouts
  • JTAG pinouts


Freematics Esprit leads out nearly all useful ESP32’s GPIO pins, arranged in a deliberated order, to balance between accessibility and Arduino compatibility.

Extra pinouts In addition to standard Arduino pin headers as following.

  • 4-pin I2C header: SDA(GPIO4), SCL(GPIO5), 3.3v, GND
  • 4-pin serial UART header #1: Rx(GPIO18), Tx(GPIO19), VCC (3.3V/5V), GND
  • xBee socket: Rx(GPIO32), Tx(GPIO33), VCC (3.3V/5V), GND

The VCC switch toggles between 3.3V and 5V for VCC pins for serial UART header and xBee socket. The VCC/GND pins on UART header can be used to power the board when switched to 5V by Freematics OBD-II UART adapter. The standard xBee socket VCC voltage is 3.3V, while all our cellular modules require 5V VCC.


Tags: Arduino, ESP32
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