Connecting NINA-B112 EVK to arduino Nano UART

0 votes

Hi everyone,



I connected the module side of the NINA-B112 EVK with an Arduino and im not getting any responces back.

but when I connect the USB-serial to PC it works well with s-center.

I have read few other questions similar to this but their solutions didn't help.

My connections

Arduino        |       NINA EVK       |      USB-Serial

3V3                      3V3 on J1                    3V3 

GND                    GND on J1                  GND

p-10(RX)              TX on J3                      RX

p-11(TX)              RX on J3                      TX


I also connected the CTS line to GND on the J1 cause I'm not using flow control.

I have removed all connections in J7, J9 and R4 and R6 resistors.

DS6 LED is blinking and DS9 is on


Arduino code

#include <SoftwareSerial.h>

SoftwareSerial mySerial(8, 9); // RX, TX

void setup() {
  // Open serial communications and wait for port to open:
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only

  Serial.println("Starting BLE");
  // set the data rate for the SoftwareSerial port


  Serial.println("Coming here");

void loop() { // run over and over`
  if (mySerial.available()) {


please help

Thank you.

by Yasiru asked Jun 19, 2017
by Yasiru edited Jun 19, 2017
I soldered back the R6 and R4 resisters now, The issue with getting +STARTUP all the time went away but I'm still not receiving any responses back from the module.
0 votes
By default NINA-B1 is connected to the onboard MCU.  Have you disconnected MCU (J9 header) to allow for external access?
by grumpy answered Jun 19, 2017
Yes I have disconnected the J9 and J7 headers