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ECE 477 Group 3 The Gauntlet

ECE 477 Group 3 The Gauntlet. George Hadley Kelli Hacker Sean Ma Jacob Champion. Revised PSSCs. An ability to communicate sensor data via audio to the user An ability to recharge and monitor an on-board battery An ability to determine current location via GPS

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ECE 477 Group 3 The Gauntlet

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  1. ECE 477 Group 3The Gauntlet George Hadley Kelli Hacker Sean Ma Jacob Champion

  2. Revised PSSCs • An ability to communicate sensor data via audio to the user • An ability to recharge and monitor an on-board battery • An ability to determine current location via GPS • An ability to direct the user to a “safe” waypoint • An ability to save acquired data to Flash storage

  3. Block Diagram

  4. Important Constraints • Power consumption • The Gauntlet should last for a minimum of 10 hours – ideally more • Each peripheral should be low-power or have a shutdown pin • Form factor and durability • Both size and weight are important! • Peripherals cannot be fragile

  5. STA013 On-chip MP3 decoding 30 mA current draw I2C or pure serial interface 24-bit serial PCM output VS-1011e Streaming WAV and MP3 decoder 50 mA active / 30 mA inactive SPI interface (512-byte packets) Headphone driver Audio Decoder Selection

  6. Bosch BMA150 200 uA active draw SPI interface +/-8g maximum 12-LGA packaging (3x3 mm) Analog ADXL345 40 uA active draw SPI interface +/-16g maximum Free-fall and motion interrupt support 14-LGA packaging (3x5 mm)… with a breakout board available Accelerometer Selection

  7. Questions?

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