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By: created: 2013-04-11 | updated: 2013-04-11


Gives an eight value readout to a 50K ohm potientiometer utilizing the Parallax P8X32A Quick Start Development Board, Parallax 2x16 Serial LCD (optional), & using the FullDuplexSerial.spin object in the Propellar Library (optional). As you turn the Pot, LED's(P16-P23) light up/ shutdown in ascending/descending order along with the value "Velocity" on the display increasing/decreasing in decimal and binary. If you are not using the display, just run the object as is and it should work just fine.

Added Note on 8/29/2012: The Value for resistor R2 is incorrect as shown on schematic diagram, the correct value should be 20k ohms.

Also needed:

  • 50K Ohm Potientiometer
  • An Assortment of Resistors and Capacitors(Values shown in
  • schematic daigram at the top of the object.)
  • 1 LED
  • +5V Supply for LCD display(optional)


  • Gives a pretty acurate reading


  • Uses 10 I/O pins.
  • Only gives Eight Values


Original File Upload
Binary Data mixingboard3.1.spin30.91 KB