I've an Arduino Mega 2560 R3 and recently bought a Wifi Shield CC3000 from ebay http://www.ebay.de/itm/201405512301 They write that the firmware has the version ServicePack 1.11.1. The WiFi shield is connected to the Arduino and green status light is on.

I try to run this example code:

void setup() {
  //Initialize serial and wait for port to open:
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only

// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
  Serial.println("WiFi shield not present");
    // don't continue:

It seems that Wifi.status() always returns WL_NO_SHIELD. What can I do?

Thanks for help.

  • Are you using a CC3000 library, or the IDE's WiFi library that is written for the Wiznet chip?
    – Majenko
    Aug 25, 2015 at 19:44

1 Answer 1


The problem is solved now.

  • I imported the Adafruit_CC3000 library which can be downloaded here: https://github.com/adafruit/Adafruit_CC3000_Library
  • I run the example but the output was chinese nonsense
  • Instead of


    I used


    then the examples run without any problem

Thanks @Majenko. His question was very helpful.

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