teensy_loader_cli: teensy_loader_cli (Teensy CLI downloader) teensy_loader_cli: teensy_loader_cli: The Teensy is a complete USB-based microcontoller development system, teensy_loader_cli: in a very small footprint, capable of implementing many types of teensy_loader_cli: projects. All programming is done via the USB port. No special teensy_loader_cli: programmer is needed, only a standard "Mini-B" USB cable. teensy_loader_cli: teensy_loader_cli: The Teensy Loader program communicates with your Teensy board when the teensy_loader_cli: HalfKay bootloader is running, so you can download new programs and teensy_loader_cli: run them. The Teensy CLI Loader is a command line version to teensy_loader_cli: automate programming, typically using a Makefile.