The Teensy USB Development Board is a complete USB-based microcontoller development system, in a very small footprint, capable of implementing many types of projects. All programming is done via the USB port. No special programmer is needed, only a standard "Micro-B" USB cable and a computer with a USB port. 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. To use the Teensy on a breadboard, you will need to add the optional header pins. The Teensy can also be run from the +5VDC on a USB cable. All Teensy boards are shipped assembled and fully tested.
