Teensy 2.0, LC, 3.x, 4.x core libraries for Arduino.
The latest stable version of Teensy's core library is always available in the Teensyduino installer, at this page:
Teensy 2.0, LC, 3.x, 4.x core libraries for Arduino.
The latest stable version of Teensy's core library is always available in the Teensyduino installer, at this page: