Arduino MKR GSM 1400 w/o Antenna

SKU: ABX00018 Brand: Arduino Guides (1)

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Arduino MKR GSM 1400 has been designed to offer a practical and cost-effective solution for makers seeking to add global GSM connectivity to their projects with minimal previous experience in networking. It is based on the Atmel SAMD21 and a SARAU201 GSM module.

Note for Australia: This device is 3G with 2G fallback. The 2G networks in Australia have been dismantled, so the 2G fallback feature is unavailable in Australia.

The design includes the ability to power the board using a LiPo battery or external power source from 5V up to 12V. Switching from one source to the other is done automatically. A good 32-bit computational power similar to the Zero board, the usual rich set of I/O interfaces, global GSM communication and the ease of use of the Arduino Software (IDE) for code development and programming. All these features make this board the preferred choice for the emerging IoT battery-powered projects in a compact form factor. The USB port can be used to supply power (5V) to the board. During cellular transmissions, the peak current required by the board will exceed 500mA. This is in excess of what can be sourced by a standard USB port, so it is MANDATORY to have a 1500 mAh or higher LiPo battery plugged all the time, the current provided by the USB port will be supplemented by the battery. When powering the board using Vin, a 5V power supply that can supply at least 2A is required..

Please note: This board does not ship with a SIM card.

Warning: Unlike most Arduino & Genuino boards, the MKR GSM 1400 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. While output to 5V digital devices is possible, bidirectional communication with 5V devices needs proper level shifting. You can find here your board warranty information. Getting Started You can find in the Getting Started section all the information you need to configure your board, use the Arduino Software (IDE), and start tinker with coding and electronics.

You can find here your board warranty information.

Technical Specifications

Microcontroller	SAMD21 Cortex-MO+ 32 bit low power ARM MCU
Board Power Supply (USB/VIN)	5V/5-12V
*Supported Battery ()**	3.7V LiPo
Circuit Operating Voltage	3.3V
Digital I/O Pins	8
PWM Pins	12 (0, 1, 2, 3, 4, 5, 6, 7, 8, 10, A3 - or 18 -, A4 -or 19)
UART	1
SPI	1
I2C	1
Analog Input Pins	7 (ADC 8/10/12 bit)
Analog Output Pins	1 (DAC 10 bit)
External Interrupts	8 (0, 1, 4, 5, 6, 7, 8, A1 -or 16-, A2 - or 17)
DC Current Per I/O Pin	7mA
Flash Memory	356KB
SRAM	32KB
EEPROM	no
Clock Speed	32.768 kHz (RTC), 48MHz
LED_BUILTIN	6
Full-Speed USB Device and Embedded Host
Antenna Power	2dB
Carrier Frequency	433/868/915 MHz
Working Region	Global
Length	67.64mm
Width	25mm
Weight	32 grams
SIM Size	Micro

OSH: Schematics

The Arduino MKR GSM 1400 is open-source hardware! You can build your own board using the following files:

Pinout

Download the pinout in PNG format

Antenna

The MKR GSM 1400 has to be used with a GSM antenna that can be attached to the board with the micro UFL connector. Please check that it can accept frequencies in the GSM's range (880/915 MHz). Please note: for best result, do not attach the antenna to a metallic surface like car chassis, etc.

Batteries, Pins and board LEDs

Battery capacity: The connected battery must be a 3.7V LiPo

Vin: This pin can be used to power the board with a regulated voltage source rated at 5V. If the power is fed through this pin, the USB power source is disconnected. This is the only way you can supply MAXIMUM 5V to the board not using USB. This pin is an INPUT.

5V: This pin outputs 5V from the the board when powered from the USB connector or from the VIN pin of the board. It is unregulated and the voltage is taken directly from the inputs.

VCC: This pin outputs 3.3V through the on-board voltage regulator. This voltage is 3.3V if USB or VIN is used and equal to the series of the two batteries when they are used

LED ON: This LED is connected to the input voltage source from either USB or VIN. It is also connected to the battery power. This means that it is ON (with a lower intensity) also when the battery is inserted.

Onboard LED: On MKR GSM 1400 the on board LED is connected to D6 and not D13 as on the other boards. Blink example or other sketcthes that uses pin 13 for on board LED may need to be changed to work properly.

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