This is my own version of a Parallax Propeller development board.
Uses a PIC microcontroller for the USB-Serial interface, can be powered from either USB or a dedicated power source, includes an EEPROM to store the program and data, and provides a 2x20 pin header exposing all 32 I/O pins from the Propeller microcontroller, power and control lines.
Compatible with all standard Propeller development tools.