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Table Of Contents

ARDUINO MKR ZERO
- OSH: Schematics
- Li-Po batteries, Pins, SD and board LEDs

ARDUINO MKR ZERO

Code: ABX00012

MKR ZERO has an on-board SD connector with dedicated SPI interfaces (SPI1)

that allows you to play with MUSIC files with no extra hardware!

Watch out music makers, we’ve got some news for you! We have released two

libraries for your enjoyment:

•Arduino Sound library – a simple way to play and analyze audio data using

Arduino on SAM D21-based boards.

•I2S library – to use the I2S protocol on SAMD21-based boards. For those who

don’t know, I2S (Inter-IC Sound) is an electrical serial bus interface standard for

connecting digital audio devices.

The MKR ZERO brings you the power of a Zero in the smaller format established by the MKR form factor.

The MKR ZERO board acts as a great educational tool for learning about 32-bit application development.

It has an on-board SD connector with dedicated SPI interfaces (SPI1) that allows you to play with MUSIC

files with no extra hardware! The board is powered by Atmel’s SAMD21 MCU, which features a 32-bit

ARM Cortex® M0+ core.

Warning: Unlike most Arduino & Genuino boards, the MKRZero runs at 3.3V. The maximum voltage

that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could

damage the board.

The board contains everything needed to support the microcontroller; simply connect it to a computer with

a micro-USB cable or power it by a LiPo battery. The battery voltage can also be monitored since a

connection between the battery and the analog converter of the board exists.

Summary of content (5 pages)

PAGE 1
ARDUINO MKR ZERO Code: ABX00012 MKR ZERO has an on-board SD connector with dedicated SPI interfaces (SPI1) that allows you to play with MUSIC files with no extra hardware! Watch out music makers, we’ve got some news for you! We have released two libraries for your enjoyment: •Arduino Sound library – a simple way to play and analyze audio data using Arduino on SAM D21-based boards. •I2S library – to use the I2S protocol on SAMD21-based boards.
PAGE 2
TECH SPECS Microcontroller Board Power Supply (USB/VIN) Supported Battery(*) DC Current for 3.3V Pin DC Current for 5V Pin Circuit Operating Voltage Digital I/O Pins PWM Pins UART SPI I2C Analog Input Pins Analog Output Pins External Interrupts DC Current per I/O Pin Flash Memory Flash Memory for Bootloader SRAM EEPROM Clock Speed LED_BUILTIN Full-Speed USB Device and embedded Host SAMD21 Cortex-M0+ 32bit low power ARM MCU 5V Li-Po single cell, 3.7V, 700mAh minimum 600mA 600mA 3.
PAGE 3
OSH: Schematics The MKR ZERO is open-source hardware! You can build your own board using the following files: EAGLE FILES IN .ZIPSCHEMATICS IN .PDF Li-Po batteries, Pins, SD and board LEDs On-board SD The on- board SD connector allows you to play with files without adding any extra hardware to the board. Furthermore SD card is driven by a dedicated SPI interface (SPI1) and so any of the pins of the header is busy during SD usage.
PAGE 4
Additional I2C Port The MKRZero has an additional connector meant as an extension of the I2C bus. It's a small form factor 5pin connector with 1.0mm pitch. The mechanical details of the connector can be found in the connector datasheet. The I2C port in addition to the SDA and SCL signals includes the GND and +5V power rails and a digital pin that might be useful when designing an expansion. The pinout is shown in the following image: Vin This pin can be used to power the board with a regulated 5V source.
PAGE 5
will start to blink at a frequency of about 2Hz. This flashing is caused by the following conditions maintained for a long time (from 20 to 70 minutes): - No battery is connected to JST connector. Overdischarged/damaged battery is connected. It can't be recharged. - A fully charged battery is put through another unnecessary charging cycle. This is done disconnecting and reconnecting either VIN or the battery itself while VIN is connected.