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Precise Timing Device for Academic Presentations: A Multicolor LED Timer

This innovative timer features a multifunctional design with seven-segment LEDs and a multicolored LED array, focusing on accurate timing for academic presentations. Its user-friendly interface includes a 0-9 keypad for inputting and setting critical times, ensuring smooth flow within allotted presentation time. The robust microcontroller and multiple power sources guarantee reliability, while the compact enclosure with ventilation provides durability. Ideal for maintaining pace during presentations, this timer offers visibility up to 70 feet with a functional block diagram for easy operation.

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Precise Timing Device for Academic Presentations: A Multicolor LED Timer

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  1. Academic Presentation Timer Team #6 Ignacio Carranza Danny Cardenas Edward Minter Joshua Roos

  2. Purpose • Accurate timing • Seven segment LED’s • Multicolored LED array • Visible

  3. Why? • Flow • Allotted time • Grade • Critical time

  4. Objective • Microcontroller • Multicolor display • User interface • Multiple power sources • Enclosure

  5. Microcontroller • Selection of the microcontroller • Internal clock functionality • Multiple port outputs • Multiple port inputs • Reliability • Cost MC9S12XD 144 Pin LQFP

  6. Display • Seven segment LED’s • Visible to 70’ • 4” – 6” digits • LED array • RGB LED’s • Bi-Color LED’s

  7. User Interface • 0 – 9 keypad • Input times • Set critical times • Start/Stop/Reset • LCD screen

  8. Power • 120VAC • Rectified to 12VDC • 12VDC • Lead-acid battery • Rechargeable • Compact • Supply to display & microcontroller

  9. Plexiglass Dimensions 18”L by 8”H By 6”W Ventilation Enclosure

  10. Estimated Budget Cost

  11. Functional Block Diagram Ultra bright LED Power Display Microprocessor LED Number Display Display Receiver Memory Interface Transmitter Keypad Analog Digital Wireless

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