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COUNT DOWN TIMER

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Microcontroller › 8051 › COUNT DOWN TIMER

Viewing 6 posts - 1 through 6 (of 6 total)
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  • April 18, 2015 at 5:09 am #3628
    Ali Tamoore
    Participant

    Can any one tell me how I can change "select"  button to prifix 5 minutes intervel

    i e   1 push = 5 min

           2 push =10 min   ….. so on

    April 22, 2015 at 5:28 pm #12816
    Ashutosh Bhatt
    Participant

    moare details please

    which circuit? 

    April 23, 2015 at 2:55 pm #12819
    Ali Tamoore
    Participant

    Countdown timer using 8051 microcontroller (AT89C51)

    http://www.engineersgarage.com/microcontroller/8051projects/countdown-timer-using-AT89C51-circuit

    April 24, 2015 at 7:29 am #12824
    Ashutosh Bhatt
    Participant

    yes. you can do. just u have to change the program and add buttons

    April 28, 2015 at 4:03 pm #12839
    Ali Tamoore
    Participant

    how should i change the program

    May 1, 2015 at 10:50 am #12846
    Ashutosh Bhatt
    Participant

    change the delay function.

    the delay function given gives fixed delay of 1 sec. you hv to make it variable delay. like it gives 1min, 2min, 5 min….. etc delay

    also u hv to change the button functions like when button is pressed delay is increased/decreased

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