Seeed Studio XIAO ESP32C3

The XIAO ESP32C3 packs Espressif's ESP32-C3 into a 21 × 17.8 mm board you can solder straight onto your own PCB. It runs a 160 MHz RISC-V core with Wi-Fi and Bluetooth LE 5, has a lithium battery charger on board and sips only about 44 µA in deep sleep, so a small LiPo can keep a sensor node alive for weeks. Program it from the Arduino IDE, ESP-IDF or MicroPython over its USB-C port.

Key features

• 32-bit RISC-V ESP32-C3 at up to 160 MHz with 400 KB SRAM and 4 MB flash
• 2.4 GHz Wi-Fi 4 and Bluetooth LE 5 with an external U.FL antenna for better range
• Battery charge management: connect a 3.7 V LiPo to the BAT pads and charge over USB-C
• Deep sleep down to about 44 µA for battery-powered sensors
• Castellated edges for surface mounting, breadboard friendly with headers

Specifications

What's in the box

• 1 × XIAO ESP32C3 board
• 1 × U.FL Wi-Fi/BLE antenna
• 2 × 7-pin headers (unsoldered)

Ideal for

• Battery-powered IoT sensors
• Wearables
• BLE beacons and remotes
• Home automation nodes

Good to know

• Always connect the supplied antenna before using Wi-Fi or Bluetooth.
• GPIO pins are 3.3 V only — do not feed them 5 V signals.