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    Comm. Project

    Gudday people, Please i need ur help/idea on hw i can implement a communication project. I want an app on phone to wirelessly light up an several LEDs independent of each other(one at a time). If dis kind of project has already being done before den can you point me in d ryt direction(link)...
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    How to Interface an ultrasonic sensor and a bluetooth

    Good day everyone, please can anyone tell me or give me an idea on how to interface an ultrasonic sensor with a usb bluetooth adapter? Also mention the possibility.
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    Time delay Circuit-How?

    Please does anyone have any idea on where and how to get a time delay circuit that comes on every 8hours, remain on for about a minute then go off again, and continues the cycle. Also is is possible to use a PIC for such an operation
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    Region of Operation of BJT

    My lecturer has bn teasing us with this. In what region of operation will a BJT be operating when Vbe=0? i.e the emitter and base are shorted.Thanks 4 ur replies:)
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    3V,7.7mA supply from 12V battery

    Goodday, Can anyone give me some ideas on how to design/build a 3V power supply from a 12V battery. The 3V will supply about 7.7mA to a sensor. Thanks for your anticipated replies.:)
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