Failed connection to any WiFi network

Projects Networking, Protocols, and Devices
1

Hello,

I am having a lot of trouble trying to connect my Arduino Nano 33 IOT to any WiFi network. I am trying to connect to my WiFi network at home which has a 2.4GHz frequency. However everytime it gives me the following response:

''Connection to "xxxxxx" failed"
Retrying in "500" milliseconds.

I have the right information entered in the secret tab. Also connecting to my phone Hotspot doesn't work.

Anyone has an idea what could be the cause of this?

Code is pasted below.

Thanks


#include <Arduino_LSM6DS3.h>
#include "thingProperties.h"

void setup() {
  // Initialize serial and wait for port to open:
  Serial.begin(9600);
  // This delay gives the chance to wait for a Serial Monitor without blocking if none is found
  delay(1500); 

  // Defined in thingProperties.h
  initProperties();

  // Connect to Arduino IoT Cloud
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
  

  /*
     The following function allows you to obtain more information
     related to the state of network and IoT Cloud connection and errors
     the higher number the more granular information you’ll get.
     The default is 0 (only errors).
     Maximum is 4
 */
  setDebugMessageLevel(4);
  ArduinoCloud.printDebugInfo();


  if (!IMU.begin()) {
    Serial.println("Failed to initialize IMU!");

    while (1);
  }

  Serial.print("Temperature sensor sample rate = ");
  Serial.print(IMU.temperatureSampleRate());
  Serial.println(" Hz");
  Serial.println();
  Serial.println("Temperature reading in degrees C");
  Serial.println("Temperature");
}

void loop() {
  ArduinoCloud.update();
  
  float temperature;
  
  if (IMU.temperatureAvailable()) {
    // after IMU.readTemperature() returns, t will contain the temperature reading
    IMU.readTemperature(temperature);

    Serial.println(temperature);

    delay(2000);
  }
}

/*
  Since Temperature is READ_WRITE variable, onTemperatureChange() is
  executed every time a new value is received from IoT Cloud.
*/
void onTemperatureChange()  {
  // Add your code here to act upon Temperature change
}
2

What is the result of wifiscan?

#include <SPI.h>
#include <WiFiNINA.h>
 
void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
 
  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    while (true);
  }
 
  String fv = WiFi.firmwareVersion();
  if (fv < "1.0.0") {
    Serial.println("Please upgrade the firmware");
  }
 
  // print your MAC address:
  byte mac[6];
  WiFi.macAddress(mac);
  Serial.print("MAC: ");
  printMacAddress(mac);
}
 
void loop() {
  // scan for existing networks:
  Serial.println("Scanning available networks...");
  listNetworks();
  delay(10000);
}
 
void listNetworks() {
  // scan for nearby networks:
  Serial.println("** Scan Networks **");
  int numSsid = WiFi.scanNetworks();
  if (numSsid == -1) {
    Serial.println("Couldn't get a wifi connection");
    while (true);
  }
 
  // print the list of networks seen:
  Serial.print("number of available networks:");
  Serial.println(numSsid);
 
  // print the network number and name for each network found:
  for (int thisNet = 0; thisNet < numSsid; thisNet++) {
    Serial.print(thisNet);
    Serial.print(") ");
    Serial.print(WiFi.SSID(thisNet));
    Serial.print("\tSignal: ");
    Serial.print(WiFi.RSSI(thisNet));
    Serial.print(" dBm");
    Serial.print("\tEncryption: ");
    printEncryptionType(WiFi.encryptionType(thisNet));
  }
}
 
void printEncryptionType(int thisType) {
  // read the encryption type and print out the name:
  switch (thisType) {
    case ENC_TYPE_WEP:
      Serial.println("WEP");
      break;
    case ENC_TYPE_TKIP:
      Serial.println("WPA");
      break;
    case ENC_TYPE_CCMP:
      Serial.println("WPA2");
      break;
    case ENC_TYPE_NONE:
      Serial.println("None");
      break;
    case ENC_TYPE_AUTO:
      Serial.println("Auto");
      break;
    case ENC_TYPE_UNKNOWN:
    default:
      Serial.println("Unknown");
      break;
  }
}
 
 
void printMacAddress(byte mac[]) {
  for (int i = 5; i >= 0; i--) {
    if (mac[i] < 16) {
      Serial.print("0");
    }
    Serial.print(mac[i], HEX);
    if (i > 0) {
      Serial.print(":");
    }
  }
  Serial.println();
}
3

There are no networks available.

Scanning available networks...

** Scan Networks **

number of available networks:0

4
5

Thank you for your answers. I have managed to fix it. I had 2 wifi networks, one 5GHz (not compatible) and one 2.4GHz. The signal strength for the 2.4GHz was apparently too weak for the arduino to connect.

Moved closer to the modem and now i am able to connect.

Thanks

6

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