PJRC.COM is the on-line home of Paul J Stoffregen and Robin C Coon. Paul is an Electrical Engineer, currently working on PJRC, Robin is an Accountant, currently working with PPM Energy.
The Teensy is a complete USB-based microcontroller 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 USB cable and a PC or Macintosh with a USB port.