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  • January 21, 2016 at 10:34 pm in reply to: Handling interrupts – ADC #12010
    George Mathew
    Participant

    Thank you sir….

    I dont know how to use comparator module…

    but I have managed all the activities using Timer interrupts.

    December 19, 2015 at 11:11 am in reply to: Unexpected behaviour of 12V DC Motor with PIC Microcontroller #11928
    George Mathew
    Participant

    Dear Sir,

    I connected power supply like that only.Ground was common. But that was not the problem.I connected back the supply as earlier in parallel.

    As you said, problem was that ripples.When I connected a 1000uf(25V) capacitor  in parallel with Vs Pin(12V) and the Ground pin of  L293D, the problem was solved.

    Thanks for your support.

    Rgds,

    George

     

    December 18, 2015 at 12:20 pm in reply to: Unexpected behaviour of 12V DC Motor with PIC Microcontroller #11926
    George Mathew
    Participant

    checked with seperate power supply also……but no result.

    December 18, 2015 at 11:00 am in reply to: Unexpected behaviour of 12V DC Motor with PIC Microcontroller #11925
    George Mathew
    Participant

    Thank you for your response sir…

    As you said,I am using a 12V common power supply.By using a 7805 regulator,it is cut down to 5V and is supplied to PIC board section and IC supply voltage .

    For 12V   pin (Vs) in L293D,It is taken in parallel from 12V dc power in the board and there is no connection with PIC section.then how this will happen??

    Also Is capacitances necessary??

    Rgds,

    George

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