Seeed Studio XIAO ESP32C3

The Seeed Studio XIAO ESP32C3 is a compact and high-performance IoT development board built around the powerful ESP32-C3 chip. Featuring a 32-bit RISC-V single-core processor running up to 160MHz, this board delivers excellent processing capability while maintaining low power consumption. It supports 2.4GHz WiFi (IEEE 802.11 b/g/n) and Bluetooth 5.0 (BLE), making it ideal for wireless and IoT applications. Designed with a small form factor (21 x 17.8mm) and single-sided SMD layout, the XIAO ESP32C3 is perfect for space-constrained projects such as wearables and embedded systems. It also includes an external antenna for enhanced RF performance and stable connectivity. With rich peripherals including GPIO, ADC, UART, I2C, and SPI interfaces, this board offers flexibility for a wide range of applications.

Package Includes:

1 x Seeed Studio XIAO ESP32C3 Development Board
1 x External Antenna

85.00 AED (Tax included)

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Features:

Powerful Processor: ESP32-C3 32-bit RISC-V single-core CPU running up to 160MHz
Wireless Connectivity: Supports 2.4GHz WiFi (802.11 b/g/n) and Bluetooth 5.0 BLE
Compact Size: Ultra-small 21 x 17.8mm form factor suitable for embedded and wearable devices
External Antenna: Improved RF performance and signal stability
Low Power Consumption: Deep sleep current as low as ~44µA
Rich Interfaces: UART, I2C, SPI communication supported
GPIO Capability: 11 digital I/O pins with PWM support
Analog Inputs: 4 ADC channels for sensor interfacing
Onboard Buttons: Reset button and Boot mode button included
Battery Support: Built-in lithium battery charge management
Security Features: Supports AES, RSA, SHA, HMAC, and secure boot
Memory: 400KB SRAM and 4MB onboard Flash
Surface-Mount Design: Single-sided components for easy integration

Principle of Work:

The XIAO ESP32C3 operates using the ESP32-C3 SoC, which integrates a RISC-V CPU, wireless connectivity modules, and peripheral interfaces into a single chip. The processor executes user programs stored in its 4MB Flash memory, while 400KB SRAM is used for runtime operations and data handling. The board features a fully integrated WiFi and Bluetooth subsystem, enabling seamless communication with networks, cloud platforms, and other devices. Its GPIO pins allow interaction with sensors and actuators, while interfaces such as UART, I2C, and SPI enable communication with external modules. Power management is a key strength of this board. It supports multiple sleep modes including deep sleep, significantly reducing power consumption for battery-powered applications. The onboard battery charging circuit allows direct connection of a lithium battery, making it ideal for portable and IoT devices.

Pinout of the Module:

Power Pins: Includes 5V input/output, 3.3V regulated output, and GND
Digital I/O Pins: 11 GPIO pins configurable for input/output and PWM
Analog Pins: 4 ADC channels for analog signal measurement
I2C Interface: SDA (D4) and SCL (D5) for communication with sensors
UART Interface: TX (D6) and RX (D7) for serial communication
SPI Interface: SCK (D8), MISO (D9), MOSI (D10)
Control Buttons: Reset and Boot buttons for programming and debugging
Antenna Connector: External antenna for improved wireless performance

Applications:

IoT Devices: Smart sensors, cloud-connected systems, and wireless monitoring
Wearable Electronics: Compact size ideal for fitness trackers and smart wearables
Home Automation: Control of smart home appliances and systems
Wireless Communication Projects: BLE and WiFi-based applications
Battery-Powered Systems: Low-power operation suitable for portable devices
Embedded Systems: Integration into compact electronic designs
Sensor Networks: Data acquisition and environmental monitoring
Robotics: Wireless control and sensor interfacing

Circuit:

For a basic test, connect an LED to one of the GPIO pins (e.g., D10) with a current-limiting resistor. This allows you to verify operation by running a simple blink program.

Connecting with Arduino First Time

Install Arduino IDE: Download from Arduino Official Website
Install ESP32 Board Package: Add ESP32 board support via Boards Manager
https://espressif.github.io/arduino-esp32/package_esp32_index.json
Connect the Board: Use a USB Type-C data cable to connect the board
Select Board: Tools > Board > ESP32 Arduino > XIAO_ESP32C3
Select Port: Choose the correct COM port under Tools > Port
Upload Code: Write or paste code and upload to the board

Code:

// Define LED pin
const int led = D10;

void setup() {
  pinMode(led, OUTPUT);
}

void loop() {
  digitalWrite(led, HIGH);
  delay(1000);
  digitalWrite(led, LOW);
  delay(1000);
}