MKR Zero-board

MKR Zero

The Arduino MKR Zero is a development board for music makers! With an SD card holder and dedicated SPI interfaces (SPI1), you are able to play music files without extra hardware.

Main Features

The MKR Zero board is a great board for getting started with various music projects. Using the popular Arm® Cortex®-M0 32-bit SAMD21 processor, it also comes with a micro SD card holder with dedicated SPI interfaces. The board is part of the MKR family, where you can choose from a large variety of shields to build projects out of the box with minimal effort!

Core

Cortex-M0 32-bit SAMD21

The powerful, low-power processor that is used in all MKR Family boards.

File

Micro SD card holder

Store large media files, build advanced UIs for displays or log data offline: extra space is always useful.

Tech Specs

Here you will find the technical specifications for the Arduino MKR Zero.

Board	Name	Arduino® MKR Zero
Board	SKU	ABX00012
Microcontroller	SAMD21 Cortex®-M0+ 32bit low power ARM MCU
USB connector	Micro USB (USB-B)
Pins	Built-in LED Pin	32
	Digital I/O Pins	8
	Analog Input Pins	7 (ADC 8/10/12 bit)
	Analog Output Pins	1 (DAC 10 bit)
	PWM Pins	13 (0 - 8, 10, 12, A3, A4)
	External interrupts	10 (0, 1, 4, 5, 6, 7, 8 ,9, A1, A2)
Communication	UART	Yes
	I2C	Yes
	SPI	Yes
Power	I/O Voltage	3.3V
	Input Voltage (nominal)	5-5.5V
	DC Current per I/O pin	7 mA
	Supported battery	Li-Po single cell, 3.7V, 700mAh minimum
	Battery connector	JST PH
Clock speed	Processor	48 MHz
Clock speed	RTC	32.768 kHz
Memory	SAMD21G18A	256KB Flash, 32KB SRAM
Dimensions	Weight	32 g
	Width	25 mm
	Length	61.5 mm

Compatibility

Software & Cloud

The following software tools allow you to program your board both online and offline.

Arduino IDE

Arduino CLI

Web Editor

Hardware

The hardware listed below is compatible with this product.

shields

mkr-485-shield

mkr-can-shield

mkr-env-shield

mkr-eth-shield

mkr-imu-shield

mkr-mem-shield

mkr-sd-proto-shield

MKR SD Proto Shield

mkr-rgb-shield

mkr-gps-shield

mkr-therm-shield

MKR Therm Shield

mkr-relay-proto-shield

MKR Relay Shield

mkr-connector-carrier

MKR Connector Carrier

mkr-iot-carrier

MKR IoT Carrier

mkr-motor-carrier

MKR Motor Carrier

Essentials

First Steps

Quickstart Guide

All you need to know to get started with your new Arduino board.

Suggested Libraries

This library provides simple way to play and analyze audio data using Arduino on SAMD21 based boards using the I2S bus.

ArduinoLowPower

The ArduinoLowPower library allows you to use the low power features of the SAMD21 MCU to minimize power consumption and maximize battery duration.

An RTC (Real Time Clock) library that can be used to build clocks, alarms and stopwatches.

Arduino Basics

Built-in Examples

Built-in Examples are sketches included in the Arduino IDE and demonstrate all basic Arduino commands.

Discover interesting articles, principles and techniques related to the Arduino ecosystem.

Language References

Arduino programming language can be divided in three main parts: functions, values (variables and constants), and structure.

Tutorials

MKR Zero Data Logger

Learn how to log data on an SD card.

Micro SD

Storage

Creating an RTC Alarm with MKR Zero

Learn how to build an alarm that triggers at a specific time.

RTC

Alarm

RTC (Real Time Clock) with MKR Zero and OLED Display

Learn how to create a simple clock, using RTC and an OLED screen to display the time.

RTC

OLED

Resources

Interactive Viewer

Interact with the schematics, the PCB and a 3D model of the product.

Open Viewer

Pinout Diagram

A diagram showing the functions and the arrangement of the pins on your product.

Open Diagram

Downloads