You have to select the correct microcontroller and USB port before you are able to program. Click on tools / board / Arduino AVR Boards / Arduino Leonardo. That sets the board to Leonardo (Atmega32-U4 ...

"Bare metal" programming, that is programming at the hardware register level, is an excellent way to learn microcontrollers. This tutorial will help you set up your development environment and build ...

The small IMUduino Arduino Leonardo powered board is currently the world’s smallest Arduino Leonardo compatible board that includes integrated wireless motion and orientation sensing technology.