Arduino Boards & Compatibles

Arduino Zero SAMD21 32-bit ARM Cortex-M0+ Development Board

The Arduino Zero is a powerful 32-bit development board built around the Microchip/Atmel ATSAMD21G18 microcontroller, giving makers, engineering students and embedded developers a major performance upgrade over classic 8-bit Arduino boards. Running at 48 MHz on an ARM Cortex-M0+ core, the Arduino Zero is ideal for projects that need faster processing, more memory, advanced timers, USB functionality and cleaner analog performance while still keeping the familiar Arduino IDE workflow. The board operates at 3.3V logic and offers 20 digital I/O pins, multiple PWM-capable pins, analog inputs, and a true analog output DAC, making it suitable for sensor acquisition, audio experiments, IoT prototypes, robotics controllers and data-logging applications. A key advantage of the Arduino Zero is its onboard Atmel Embedded Debugger (EDBG). The EDBG provides a dedicated programming/debug interface and makes the board especially useful for students learning professional embedded debugging with SWD/OpenOCD-style workflows. The board also includes a native USB port for direct USB device applications and serial communication. With 256 KB flash memory and SRAM in the tens of kilobytes range, it can run more complex sketches and libraries than an Arduino Uno-class board. Choose the Arduino Zero SAMD21 when you want an Arduino-compatible board with modern 32-bit performance, native USB capability and a serious learning path into ARM microcontroller development.