Arduino UNO click shield


The Arduino UNO click is an extension to the Arduino UNO R3 headers. It’s a simple shield that converts Arduino UNO R3 headers to two mikroBUS host sockets that allow you to connect many other click shields to your board. In other words, the Arduino UNO click will generally be used by other shields using the mikroBUS interface.

Two mikroBUS headers are exposed by the overlay: mikrobus_header_1 and mikrobus_header_2, each corresponding to a socket on the Arduino UNO click shield.

The first socket (mikrobus_header_1) is the default socket which is assigned the node label mikrobus_header in the overlay.

More information about the shield can be found at Arduino UNO click shield website [1].


This shield can only be used with a board which provides a configuration for Arduino R3 connector.

The board must also define node aliases for arduino Serial, SPI and I2C interfaces (see Shields for more details).

Connecting shields should use the first socket (mikrobus_header_1). This socket is assigned the mikrobus_header node label.


Include -DSHIELD=arduino_uno_click when you invoke west build with other mikroBUS shields. For example:

# From the root of the zephyr repository
west build -b sam_v71_xult/samv71q21 samples/net/sockets/echo_server -- -DSHIELD="arduino_uno_click atmel_rf2xx_mikrobus" -DOVERLAY_CONFIG=overlay-802154.conf