#90
Teensy 4.0 features an ARM Cortex-M7 processor at 600MHz, with a NXP iMXRT1062 chip, the fastest microcontroller available today. Teensy 4.0 is the same size and shape as Teensy 3.2, and retains compatibility with most of the pin functions on Teensy 3.2. The best part of this version of Teensy 4.0 is that it includes headers already attached. No soldering is required allowing you to get started as quickly as possible!