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- Mini Arduino-compatible board based on SAMD21 MCU
- Part of the Seeeduino XIAO series with ultra-compact design
- Professional-grade performance in a thumb-sized SMD package
- Compatible with Arduino IDE, MicroPython, and PlatformIO
- Ideal for beginners with extensive learning resources and tutorials
Seeed Studio Seeeduino XIAO SAMD21 Arduino Compatible Board
The Seeeduino XIAO SAMD21 is a compact yet powerful Arduino-compatible board built on the Microchip SAMD21G18 MCU.
As the flagship of the Seeeduino XIAO series, this tiny board delivers professional-grade performance in a minimalist, SMD-designed form factor, making it perfect for space-constrained projects.
It offers seamless compatibility with Arduino IDE, MicroPython, and PlatformIO, allowing flexible development for a wide range of applications.
With extensive tutorials and learning resources, the Seeeduino XIAO SAMD21 is an excellent choice for beginners and hobbyists eager to explore open-source electronics.
Features:
- Ultra-compact Seeeduino XIAO design
- Powered by SAMD21G18 MCU
- Arduino IDE, MicroPython & PlatformIO compatible
- Thumb-sized SMD package for space-saving projects
- Beginner-friendly with tutorials and learning resources
Applications:
- Learning and Education (Arduino, MicroPython, Basic electronics, and prototyping)
- Wearable devices include health monitoring, interactive apparel, and tiny fitness trackers.
- IoT and sensor projects include environmental monitoring, data collection devices, smart home sensors, and small automation systems.
- Space-Constrained Mini Arduino Projects
- Rapid prototyping (fast proof-of-concept constructions, hardware testing, product prototypes, embedded system development)
- HID devices (do-it-yourself keyboard, USB to multi-channel TTL/USB host mode,
Seeeduino XIAO SAMD21 Pinout Diagram
Shipping & Returns
Shipping & Returns
- All orders confirmed before 3 pm IST are shipped on the
same day, barring rare pickup delays on holidays or disturbances - Delivery time in Metro cities is 1-3 days, Others it is
3-7 days. It varies based on location, reliant on courier services - Return window: 7 days from receipt unless stated
otherwise. No refunds/replacements after - Returns only for non-working/damaged products are accepted
- Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
- Refunds are processed within 3-4 working days post inspection and approval.
For more details, please check our Shipping and Return Policy
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Package Includes:
- 1 x Seeed Studio Seeeduino XIAO SAMD21 Arduino Compatible Board
Specifications:
| Specification | Details |
|---|---|
| Product Name | Seeed Studio XIAO SAMD21 |
| Chipset | Microchip SAMD21G18 |
| Processor | ARM Cortex-M0+ running up to 48 MHz |
| RAM | 32KB SRAM |
| Flash | 256KB Flash |
| Interface | GPIO x14, Digital x11, Analog x11, DAC x1, I2C x1, UART x1, SPI x1 |
| Onboard LEDs | User LED x1, Power LED x1, TX/RX Serial Communication LEDs x2 |
| Power Input | Type-C: 5V, Battery (BAT): 3.7V |
| Max Output | 5V @ 500mA, 3.3V @ 200mA |
| Software Compatibility | Arduino, PlatformIO, MicroPython, CircuitPython, Zephyr, and more |
| Working Temperature | -40°C to 85°C |
| Dimensions | 21 × 17.8 mm |