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Project Goals And Objectives ____________________________________________________

Project Goals And Objectives ____________________________________________________. Create a “smart”, customizable, all in one system Little to no learning curve Focus on friendly user control Can integrate easily with existing home electricity system Easily configuration Low cost.

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Project Goals And Objectives ____________________________________________________

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  1. Project Goals And Objectives____________________________________________________ • Create a “smart”, customizable, all in one system • Little to no learning curve • Focus on friendly user control • Can integrate easily with existing home electricity system • Easily configuration • Low cost

  2. PIR Motion Sensor

  3. PIR Motion Sensor

  4. PIR Motion Sensor • A passive Infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors • The PIR sensor itself has two slots in it, each slot is made of a special material that is sensitive to IRS • When a warm body like a human or animal passes by, it first intercepts one half of the PIR sensor, which causes a positive differential change between the two halves • When the warm body leaves the sensing area, the reverse happens, whereby the sensor generates a negative differential change. These change pulses are what is detected • When the sensor is idle, both slots detect the same amount of IR, the ambient amount radiated from the room or walls or outdoors

  5. Arduino Uno Microcontroller Board • Control the lights using the PIR motion sensor and the relay • ATmega328 microcontroller • Input Voltage 7-12 VDC • Output 3.3-5 VDC at 40-50 mA • Flash Memory 32KB • Clock speed 16MHz • Interact with base station through a 5 VDC I/O pin

  6. Power Supply • 3.3 to 5VDC output • 9-12VDC input range • Backup battery >= 250mA at 12VDC • Output ripple <= 20mV peak to peak • Work off of both 120VAC and Battery • Efficiency >= 75% • Transient Voltage Protection • 110 VAC US regular outlet

  7. Solar Panel • Technical specs need to look at: • Optimal voltage • Optimal current • Short circuit current • Maximum wattage • Fuse rating

  8. 12V Lead Acid Battery Charger • This charger will charge any 12V lead acid battery including flooded, gel and AGM • It is fully automatic and will charge at a rate up to about 4A until the battery voltage reaches a preset point at which it will switch to a very low current float charge • If the battery voltage drops again the charger will begin charging until the voltage once again reaches the cut off point • In this way it can be left connected to a battery indefinitely to maintain full charge without causing damage. An LED indicates when the battery is fully charged

  9. 12VDC Lead Acid Battery Charger

  10. 12V Lead Acid Battery Charger • This 12 volt Lead Acid battery charger that automatically shut off the charging process once the battery attains full charge • If the terminal voltage of the battery reduces below the set level, 13.5 volts, the circuit automatically turns on to the charge mode • 12 V Lead Acid battery attains full charge at 13.8V. It is better to give a higher voltage ( 3 or 4 volts) because there will be a voltage drop in through the circuit and also the LED takes around 2 volts

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