Arduino MKR WiFi 1300 LoRa Dev Board with 923 MHz Antenna

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Arduino MKR WAN 1300 has been designed to offer a practical and cost-effective solution for makers seeking to add Lo-Ra connectivity to their projects with minimal previous experience in networking. It is based on the Atmel SAMD21 and a Murata CMWX1ZZABZ Lo-Ra module.


The design includes the ability to power the board using two 1.5V AA or AAA batteries or an external 5V. Switching from one source to the other is done automatically. A good 32-bit computational power similar to the MKR ZERO board, the usual rich set of I/O interfaces, low power Lo-Ra communication, and the ease of use of the Arduino Software (IDE) for code development and programming. These features make this board the preferred choice for emerging IoT battery-powered projects in a compact form. The USB port can supply power (5V) to the board. The Arduino MKR WAN 1300 can run with or without the batteries connected and has limited power consumption.


Note: Unlike most Arduino & Genuino boards, the MKR WAN 1300 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.



The MKR WAN 1300 has to be used with an antenna that can be attached to the board with the micro UFL connector. So, this Arduino board comes with a 923MHz LoRa antenna and a 20cm U.FL Antenna Pigtail. You can refer to the video below on how to safely disconnect U.FL Antenna Pigtail connectors from the board.


Note: Always remember to plug in the antenna first before powering up your board.


The next one is a tutorial video from on how to setup and use the Arduino MKR WAN 1300 for LoRa Connectivity. You can directly send data to The Things Network and customize your IoT projects. Besides, this board also can be used with other LoRa networks such as Helium, which become a famous IoT network nowadays with worldwide coverage. 



Pin Diagram:


Warranty Period: 12 months
  • Antenna - The MKR WAN 1300 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 LoRa range (433/868/915 MHz).
  • Battery capacity - The connected batteries must have a nominal voltage of 1.5V 
  • Battery connector - If you want to connect a battery pack (2x AA or AAA) to your MKR WAN 1300 use the screw terminal block.
  • Polarity - as reported on the silk at the bottom of the board, the positive pin is the closest to the USB connector
  • Vin - This pin can be used to power the board with a regulated 5V source. If the power is fed through this pin, the USB power source is disconnected. This is the only way to supply 5v (range is 5V to maximum 6V) to the board not using USB. This pin is an INPUT.
  • 5V - This pin outputs 5V from the board when powered from the USB connector or 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 onboard 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 5V input from either USB or VIN. It is not connected to the battery power. This means that it lights up when power is from USB or VIN but stays off when the board is running on battery power. This maximizes the usage of the energy stored in the battery. It is therefore normal to have the board properly running on battery power without the LED ON being lit.
  • Onboard LED - On MKR WAN 1300 the onboard LED is connected to D6 and not D13 as on the other boards. Blink example or other sketches that uses pin 13 for onboard LED may need to be changed to work properly.
  • Simplifying IoT Projects - Compatible with Arduino IoT Cloud, The Things Network, Helium Console, and other IoT platforms.



  • Microcontroller: SAMD21 Cortex-M0+ 32bit low power ARM MCU
  • Radio Module: CMWX1ZZABZ (datasheet)
  • Board Power Supply (USB/VIN): 5V
  • Supported Batteries(*): 2x AA or AAA
  • 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)
  • Pins: UART x 1, SPI x 1, I2C x 1
  • 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: 256 KB
  • SRAM: 32 KB
  • EEPROM: No
  • Clock Speed: 32.768 kHz (RTC), 48 MHz
  • LED BuiltIn: Pin 6
  • Carrier Frequency: 433/868/915 MHz
  • Working Region: EU/US
  • Dimension: 67.64 x 25 (mm)
  • Weight: 32 g
  • Antenna Gain: 3dBi
  • Antenna Frequency: 923MHz
  • Cable Length: 20cm


Packing List
  • 1 x Arduino MKR WiFi 1300 LoRa Dev Board
  • 1 x Antenna 923MHz 3dBi Gain
  • 1 x Antenna Extension Cable


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Tags: LoRa, The Things Network, The Things Stack, Helium, MKRWAN