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- Joined: Tue May 12, 2015 12:51 am
The Propeller Breadboard is a Parallax P8X32A system for breadboarding circuits. All I/O pins from the processor are brought out to a single row of pins spaced at 0.1" intervals. The circuit board also has two pins providing regulated +5V and Gnd to power the breadboard rail. A second regulator onboard provides the +3.3V for the P8X32A and the 24LC512 EEPROM.
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 'Prop Plug' or similar logic-level serial interface.
v1.3 PCB Layout.pdf
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- Joined: Wed May 06, 2015 12:31 am
I like the way your board plugs into the protoboard, providing access to all the Prop I/O and power & ground.
You have done a great job of documenting your board, schematic, PCB layout and BOM.
How many of the blank circuit boards did you have made?
Who did you use make the boards?
butlh ghajbogh nuv'e' yIHo'.
Admire the person with dirt under his fingernails.
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An idea for you to consider - use a right-angle male header. That would get the flat PCB up and out of the way of components surrounding the breadboard.
Helping to Build a Better Engineer
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