MKR 1400 + Grove Connector Carrier + Grove GPS will they work together

First of all I’m a Arduino newbie. I have successfully set up the MKR 1400 with Hologram and added a Grove RGB display using the Grove Connection Carrier. My next Grove device I wanted to add was the GPS unit. When I tried to compile the sample code for the Grove GPS unit I discovered that the board does not support the required <SoftwareSerial.h>. My goal is to have a inexpensive monitoring device for my sailboat that is on a mooring.

I cannot find any articles on the web where someone has implemented a similar configuration. Do I need to explor directly connecting the GPS unit directly to the MKR 1400?

Any advice will be appreciated.

Hi there~

The USB connector exposes as a virtual serial port that can be controlled by writing and reading to the Serial object. Pins 13/14, instead, expose a Hardware serial port mapped to Serial1 object.

So you can connect the grove-gps to Pins 13/14, and use below code to communicate with MKR1400. I do not have the MKR-1400 and I can not verify the code. thanks.

unsigned char buffer[64]; // buffer array for data receive over serial port
int count=0; // counter for buffer array
void setup()
Serial1.begin(9600); // the SoftSerial baud rate
Serial.begin(9600); // the Serial port of Arduino baud rate.

void loop()
if (Serial1.available()) // if date is coming from software serial port ==> data is coming from Serial1 shield
while(Serial1.available()) // reading data into char array
buffer[count++]; // writing data into array
if(count == 64)break;
Serial.write(buffer,count); // if no data transmission ends, write buffer to hardware serial port
clearBufferArray(); // call clearBufferArray function to clear the stored data from the array
count = 0; // set counter of while loop to zero
if (Serial.available()) // if data is available on hardware serial port ==> data is coming from PC or notebook
Serial1.write(; // write it to the SoftSerial shield

void clearBufferArray() // function to clear buffer array
for (int i=0; i<count;i++)
} // clear all index of array with command NULL