Don’t let the smaller size fool you; the 4.0 is based on an ARM Cortex M7 running at 600 MHz (!), the fastest microcontroller you can get in 2019, and testing on real-world examples shows it executing code more than five times faster than the Teensy 3.6, and fifteen times faster than the Teensy 3.2.What kind of software can I use for Teensy?
Visual Micro allows use of Microsoft Visual Studio to program Arduino compatible boards, including Teensy. Only Windows is supported. Visual Micro is commercial paid software. PlatformIO IDE is a cross platform development environment with many advanced features.What's the difference between Teensy boards 3.2 and 3.5?
Earlier in 2016, PJRC announced the arrival of two new Teensy boards, the 3.5 and the 3.6, and they really step up the game in terms of power and connectivity. The 3.5 retains the 5V pin tolerance of the 3.2, and ushers in a 120 Mhz Cortex-M4 processor with a dedicated Floating Point Unit.Is the teensy 4.0 compatible with Arduino?
Teensy 4.0 is an Arduino-compatible board with an Arm Cortex-M7 running at 600 MHz.