This project template is the basis of an expansion board for the <ahref="https://store.arduino.cc/usa/arduino-uno-rev3">Arduino Uno Rev3</a>. It includes a PCB edge matching the outline of the Arduino Uno PCB with connectors and mounting holes placed correctly to align the two boards.
</p>
<p>
Note: due to the fact that the official 3D library does not include "long" or "stacking" female headers, the default Connector_PinSocket_2.54mm models were used.