countdowntimer with dual 7segment display with 16f628a


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  1. #1
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    Default countdowntimer with dual 7segment display with 16f628a

    Hello guys iam a Dentist but have been into electronics as a hobby from the last 12 years

    well i am not that good in coding (microcontrollers) so i need help from you Guys and the Admin as i couldnt find any thing on the net

    I am building a Dual 7 - segment 20 and 40 seconds countdown timer for the dental composite curing light. here are the features that i needed

    1. Dual 7- segment display
    2. Countdown timer with 20 and 40 seconds delays
    3. Timer should turn on \ off with the same button
    4. Two different buttons for 20secs and 40 secs
    5. Display should start at 20 then end at 0 same goes for 40 secs
    6. Small beep when a button is pressed then after the countdown has elapsed a long beep should be heard
    7. one output should go high when the timer statrs and should go low when the countdown ends ( this will drive a 5w blue led)
    8. when the switch is pressed while countdown the timer should turnoff
    9. when the timer is not running it should go in to sleepmode and blink an LED every 10 secs

    some one kind enough write a code for me in picbasic

    so i need help from the big brains out there to help me do the project

  2. #2
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    Default schematic is as follows

    iam giving an idea of the schematic

    in the final version i will drive the led display through transistors and the buzzer too

    i would sincerely request you guys to help me with a code
    Attached Images Attached Images  

  3. #3
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    Default

    Hint: You could replicate your message under a few more forum topics before Admin deletes all the duplicates.

  4. #4
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    Default sORRY FOR REPOSTING

    Iam Sorry For Reposting In The Forum.

    Iam Looking For Picbasic Code So I Had To Repost It Again As My Prevous Post Says Its Been Moved And I Dontknow Whereto

    Mel Can U Help Me Dear

  5. #5
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    Quote Originally Posted by Melanie View Post
    Hint: You could replicate your message under a few more forum topics before Admin deletes all the duplicates.
    Hi, your suggeation may lead into unnecessary loading up of the site,if all members start replicating--
    In general we must try to reduce duplication of posts.
    Regards,
    Sarma

  6. #6
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    Quote Originally Posted by dr.ragh View Post
    some one kind enough write a code for me in picbasic
    I'll do the whole project for you including documentation for $250 AUD.

    If you'd like to see some of my work, have a look here:
    <a href="http://www.picbasic.co.uk/forum/showthread.php?t=6033"> LED Display </a></br>

  7. #7
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    Default

    sometime i feel i should hire people instead of doing it myself
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  8. #8
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    Yeah - $250 is very cheap. If I did a project like this and submitted it to a magazine I'd get $400 + (This is still very cheap for a weeks worth of skilled labor) </br>
    I"m going to make a bold statement and say that someone who's fully qualified like say Melanie, would probably charge somewhere between ($1,000 - $2,000) </br>

    Am I right?
    Last edited by T.Jackson; - 30th April 2007 at 04:56.

  9. #9
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    Case dependant i guess. For many, the pricing range is more 2500-5000 to start thinking of doing something.
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  10. #10
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    I'd probably do this project with the inclusion of a PCB for about $350. It's a no brainer and the requirements are very clear.

  11. #11
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    Wink How about using a LCD and 16f84a ?

    Quote Originally Posted by dr.ragh View Post
    Hello guys iam a Dentist but have been into electronics as a hobby from the last 12 years

    well i am not that good in coding (microcontrollers) so i need help from you Guys and the Admin as i couldnt find any thing on the net

    I am building a Dual 7 - segment 20 and 40 seconds countdown timer for the dental composite curing light. here are the features that i needed

    1. Dual 7- segment display
    2. Countdown timer with 20 and 40 seconds delays
    3. Timer should turn on \ off with the same button
    4. Two different buttons for 20secs and 40 secs
    5. Display should start at 20 then end at 0 same goes for 40 secs
    6. Small beep when a button is pressed then after the countdown has elapsed a long beep should be heard
    7. one output should go high when the timer statrs and should go low when the countdown ends ( this will drive a 5w blue led)
    8. when the switch is pressed while countdown the timer should turnoff
    9. when the timer is not running it should go in to sleepmode and blink an LED every 10 secs

    some one kind enough write a code for me in picbasic

    so i need help from the big brains out there to help me do the project
    Instead of 7-segment display, is it OK if you use a LCD ?
    And using 16f84a ?

    I can give it a try :-)

  12. #12
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    For a dentist work, LED is better as his /her concentration is on the patient

    you get efficient LED displays now a days.
    Last edited by mvs_sarma; - 3rd May 2007 at 07:04.
    Regards,
    Sarma

  13. #13
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    Smile

    well no harm in giving it a try if i could get a very small lcd display though

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