The schematic and layout for the Propeller Breadboard
is below. It is a 'bare bones' circuit to support
the Parallax Propeller. Input power is 7.5-10VDC, provided through a standard 2.1mm power jack. The voltage is regulated
to +5V via a LM7805 regulator. The +5V is provided to pins to power the breadboard rail and to the input of the LM2950ACZ
which provides the regulated 3.3V to power the microcontroller and EEPROM. Programming of the board is done via a
or similar logic-level serial interface.