![]() ![]() If adding a WiFi shield, then Arduino’s WiFi library can be used instead. The WiFiNINA library should be used with the boards listed above, except perhaps the MKR 1000 which uses a different chip (please reach out if you have experience with this board and I’ll update this guide to include the library for the MKR 1000). The u-blox chip is the more common one as the ATSAMW25 is only found on the MKR 1000 (which, for reference, appears to be using an ATWINC1500 to do the WiFi communication). To identify if an Arduino has WiFi built in, look for the u-blox chip or the ATSAMW25. I’ve included more detail below on how WiFi can be added to an Arduino. WiFi can be added to these boards using a shield or via serial/UART communications, which typically cost about $10. ![]() Mega, Due, and other Uno boards do not come with WiFi built in. These Arduino can connect to a WiFi network or act as a WiFi access point. The built-in WiFi supports 802.11 b/g/n and operates at 2.4Ghz. Look out for the u-blox chip on an Arduino to see if it has WiFi. Location of the WiFi chip on my Arduino UNO WiFi Rev 2. ![]()
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