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In-lab Tasks:

  1. Measure the current being drawn by one of the display segments for the system you built in the preceding lab.
  2. Modify your current breadboard to implement the LED display circuit you designed in the Pre-lab. Have the TA double check your wiring before starting to test your circuit.
  3. Compile and download your program into the MicroStamp11.
  4. Use the oscilloscope to display the signal coming out of the MOSI line for each of the 10 possible display values. It is recommended that you use the SS pin to trigger your scope.
  5. Measure the current being drawn by one of the display segment for your modified system.
  6. Repeat tasks 3 and 4 for faster SPI transmission rates. You only need to sketch the wave form for one of the numbers being transmitted.
  7. Description of what happened during the in-lab task.



Michael Lemmon 2009-02-01