The Teensy USB Development Board is a complete Arduino compatible USB-based microcontoller development system. Each Teensy 3.6 comes pre-flashed with a bootloader so you can program it using the onboard USB connection.
Version 3.6 features a 32 bit 180 MHz ARM Cortex-M4 processor with floating point unit. All digital and analog pins are 3.3 volts. Do not apply more than 3.3V to any signal pin.
All Teensy boards are shipped assembled and fully tested.