About this item
The SparkFun Qwiic Micro – SAMD21 Development Board is a compact and versatile microcontroller board designed for developers who want a small footprint without sacrificing power or connectivity. At its core is the Microchip SAMD21G18, a 32-bit ARM Cortex-M0+ processor running at 48 MHz, which delivers ample performance for a wide range of embedded projects, from simple sensor interfaces to complex IoT applications. What sets this board apart is its built-in Qwiic connector, part of SparkFun’s Qwiic ecosystem that enables seamless I²C sensor and peripheral integration without soldering. This feature simplifies prototyping and reduces wiring complexity, making it easier to add Qwiic-compatible sensors, displays, and modules. The Qwiic Micro is breadboard compatible with a compact footprint, providing access to 20 GPIO pins with PWM, ADC, SPI, I²C, and UART interfaces. It includes a USB-C connector for programming and power, making it compatible with modern cables and hosts. The board is compatible with the Arduino IDE and other popular programming environments, allowing for easy code development and deployment. Whether you’re designing wearable tech, environmental sensors, or interactive devices, the Qwiic Micro offers a powerful, flexible platform in a tiny package that accelerates your development cycle.
Specifications
| Microcontroller |
Microchip SAMD21G18 (ARM Cortex-M0+, 48 MHz) |
| Operating Voltage |
3.3 V logic level |
| GPIO Pins |
20 digital pins with PWM, ADC, SPI, I²C, and UART support |
| Connectivity |
Built-in Qwiic connector for I²C sensor integration |
| Programming Interface |
USB-C for power and programming |
| Memory |
256 KB flash, 32 KB SRAM |
| Form Factor |
Breadboard compatible, compact size (approx. 22 mm × 17 mm) |
| Development Support |
Compatible with Arduino IDE and CircuitPython |
