Although the WiFi shield does have basic compatibility with Arduino Uno but this is still under development and may caused a few issues depending on project. Adafruit explain a little more : ...

The new WiFi shield supports 802.11n, and thanks to a few of Atmel’s crypto chip offerings, this shield is the first official Arduino offering to support SSL.

• Header for ESP8266 Wi-Fi Module. • Header for HC-05 Bluetooth Module. • Its mechanical construction makes it compatible with most of the stack able Arduino Uno and Raspberry Pi shields.

Finally, the new board includes a 12-bit analog DAC and operational amplifier. Keeping the pinout, voltage and form factor unchanged from the Uno R3 ensures maximum hardware and electrical ...

SparkFun catalog manager RobertC. in awe of an extravagant platter of shields. Many Arduino shields are stackable. You can connect many shields together to create a “Big Mac” of Arduino modules. You ...

Arduino has shrunk the UNO R4 with the Arduino Nano R4 board equipped with the same 48 MHz Renesas RA4M1 32-bit Arm ...

Features common to Arduino R4 – ‘WiFi’ (€25, below) and ‘Minima’ (€18, right) IO connections are in physically similar positions to Uno R3, and IO remains 5V. USB connector changed to Type-C. 6 – ...

Arduino, the 15-year-old startup behind the eponymous open source microcontroller, launched two new products today at Maker Faire Bay Area 2018: Uno WiFi Rev 2, the first Arduino development board ...

The downside here: WiFi shields are expensive (2-3x the cost of the Arduino itself), bulky, and often tough to find in a pinch. You could buy a “clone” board with WiFi built-in. Clones are ...