Thomas de Jesus' Final Project Presentation

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This is the slideshow I displayed when I gave my final presentation at DeVry University. It was for a digital handheld compass circuit that was modified mid-semester to display arrows.

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Thomas de Jesus' Final Project Presentation

  1. 1. ECT295L Digital Compass Kit ~ ~Assembly and Modification~ ~<br />Presented By:<br />Thomas de Jesus<br />June 2011<br />
  2. 2. Introdutcion<br />What is it?<br /><ul><li>ECT295L Compass Kit
  3. 3. Digital Compass/Navigational Aid
  4. 4. 9 volt dc device
  5. 5. 3 “Working” components:
  6. 6. Dinsmore 1490 EMF Sensor
  7. 7. FYD-5421-AS LED Display
  8. 8. PIC16F72 CMOS FLASH</li></ul> With Analog to Digital Converter<br />
  9. 9. Introdutcion<br />What does it do?<br /><ul><li>Measures presence of magnetic field generated by the North Pole
  10. 10. Uses internal program with sensor to determine geographical orientation
  11. 11. Microcontroller outputs binary form to light LED segments
  12. 12. LED display dependant upon programming and orientation</li></li></ul><li>Week 1<br />Pre-Assembly:<br /><ul><li>Prepare Workstation… OK!
  13. 13. Parts Inventory… OK!
  14. 14. Inspected Parts for damage… OK!
  15. 15. Get nervous about build… OK!</li></li></ul><li>Week 2<br />Installing the 1490 Compass Sensor Module:<br /><ul><li>12 electrical leads
  16. 16. Grouped in Sets of three
  17. 17. Spaced at 90° intervals
  18. 18. Tightly Spaced Together!</li></ul>No Room for Error!<br />
  19. 19. Week 2<br />Installing the 1490 Compass Sensor Module:<br />Post Installation:<br />One Visible Bridge <br />Easily Repaired Using De-Soldering Braid<br />Testing for Un-Seen Bridges:<br /> Expected = Infinite Ω (Open)<br />Red Lead<br />Test Source<br />Black Lead<br />Test Source<br />Measured = OL (Open)<br />
  20. 20. Week 2<br />Installing the 1490 Compass Sensor Module:<br />Post Installation:<br />One Visible Bridge <br />Easily Repaired Using De-Soldering Braid<br />Reversing the leads:<br /> Expected = 290kΩ - 300kΩ<br />Measured = 295kΩ (Approx.)<br />Red Lead<br />Test Source<br />Black Lead<br />Test Source<br />Good Installation!<br />
  21. 21. Week 3<br />Completing Assembly and Giving Life!<br />
  22. 22. Week 3<br />Programming The Way!<br />Removed any existing Microcontrollers<br />Aligned Compass Data Header with Programming Board J5 header<br />
  23. 23. Week 3<br />Programming The Way!<br />First Stage Assembly = Success! <br />
  24. 24. Week 4<br />Understanding the FlowCode<br />
  25. 25. Week 4<br />= E<br />PORT B = 10101101 = 173 <br />PORT C = 10000000 = 128<br />(FIRST_D_x = Left Digit)<br />(SECOND_D_x = Right Digit)<br />Variables Affecting Display<br />EAST (E)<br />
  26. 26. Week 5<br />Hardware and Software Modifications:<br />
  27. 27. Week 5<br />Hardware Modifications:<br />Added male/female <br />power-connector to V+/V-<br />Added wire jumpers to close connections from the<br /> IC pins to the display LED-Segment pins:<br />WHITE = IC Pin 13 (C2) to Display Pin 15 (Segment J)<br />RED = IC Pin 11 (C0) to Display Pin 14 (Segment K)<br />YELLOW = IC Pin 14 (C3) to Display Pin 4 (Segment M)<br />
  28. 28. Week 6<br />Software Modifications:<br />FIRST_D_1 = Port B0-7<br />FIRST_D_2 = Port C0-7<br />
  29. 29. Week 6<br />Software Modifications:<br />
  30. 30.
  31. 31. AWESOME!<br />
  32. 32. Week 6<br />Modifications Complete!<br />
  33. 33. ~fin~<br />

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