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SOLAR POWERED SMART BLIND (SPSB) SYSTEM Smart Home Automation

SOLAR POWERED SMART BLIND (SPSB) SYSTEM Smart Home Automation. SOLAR POWERED SMART BLIND. [11 March 2009] Lai Li EE Naing Oo EE Kevin-Long Vo EE Marco Herrera CompE GEORGIA INSTITUTE OF TECHNOLOGY. SOLAR POWERED SMART BLIND. WHAT - Self-sustaining, fully automatic blinds

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SOLAR POWERED SMART BLIND (SPSB) SYSTEM Smart Home Automation

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  1. SOLAR POWERED SMART BLIND (SPSB) SYSTEMSmart Home Automation

  2. SOLAR POWERED SMART BLIND [11 March 2009] Lai Li EE Naing Oo EE Kevin-Long Vo EE Marco Herrera CompE GEORGIA INSTITUTE OF TECHNOLOGY

  3. SOLAR POWERED SMART BLIND • WHAT - Self-sustaining, fully automatic blinds • WHY - Profitable market, convenient • WHO - Disabled, senior citizens, automation enthusiasts • COST - Competitive in prices with current products

  4. SPSB System Overview • Energy efficiency using solar power • Blind will be fully automatic • Manual override can be performed by the user • Blinds auto adjust based on user input mode • LCD will display date, time, room temperature, and current user select mode

  5. Operational View Stepper Motor

  6. User Interface / Control Box e e

  7. STEPPER MOTOR RTC TEMP PHOTO-RESISTORS BATTERY STEPPER MOTOR DRIVER LCD DISPLAY Arduino MCU BUTTONS POWER MANAGEMENT SOLAR PANELS AC ADAPTER Design Schematic

  8. I2C Communication • Only two I/O ports • Bi-directional communication • Multiple slave devices

  9. Light Detection • Four photo-resistors • Pull-down resistor network • Sensitivity • VOUT (0V – 5V)

  10. Stepper Motor / Driver • Four wire bi-polar motor • Current range (150mA - 750mA) • Power supply range from 7V to 30V.

  11. Power Management Solar Cell NiCad Recharging Circuit

  12. START RTC ALGORITHM READ SENSORS DELAY 5 MIN ADJUST BLINDS DAY? YES NO Algorithm Flow Chart

  13. Demonstration Plan • Recorded video demo: recording of SPSB throughout a day • Live demo: user input modes and the blinds let light in accordingly

  14. Problems and Issues • Electrical Solar power might not be sufficient to power whole unit Solution: AC-DC power adaptor • Mechanical Stepper motor with driver might not provide enough torque Solution: Servo motor with feedback

  15. Budget and Cost Analysis

  16. Current Expenditure $145.00

  17. Project Schedule

  18. SPSB System Current Status

  19. Questions ?

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