servo motor resets 16f877a


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  1. #1
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    The other thing is you may need to get a larger servo to hold the turret vertically.
    I dont think so, it can hold upto 10 kilos....Turret isnt a heavy thing...

    Did I understand right?I need to have 9v 3A power supply...

    several 7805 ?how many?2 enough?What do you think?

  2. #2
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    Quote Originally Posted by burak450 View Post
    Did I understand right?I need to have 9v 3A power supply...
    Apparently not because we've been telling you and giving you advice to fix your power supply issues for about 50 or 60 posts now...
    You may very well have a 9v 3amp power supply right now...but that doesn't mean it's 9v @ 3 amps continuous, maybe a surge of 3 amps, maybe not...
    How about a picture of your 'power supply'...

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    It's not the weight necessarily its the mass. The servo was intended to pull on a throttle cable, or steering linkage etc.... it is not intended to hold up a mass with a lever arm that extends beyond the servo horn rigidly. The metal gear servo's are generally a bit slower and are heavier duty. If you stick to the current servos you will have to gear the turret with a worm gear to keep it from back driving the servo.

    You have a few issues to work out in addition to the power supply it seems.

    Nick

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    Good thoughts...
    Maybe if that 'turret' was neutrally balanced, the whole thing might perform a lot better.
    In the video, it almost looks like it's hanging off the end of a crane arm or something. Kinda like trying to hold onto a concrete block with your arms straight out.

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    Hi skimask,

    Maybe I am always wrong...

    Maybe my english isnt good enough...

    But I think, it is not shame not knowing it is shame not learning ...

    If you wont help me ,dont reply my words please...

    When I read your words,I feel like humiliated

    Thats all...
    Last edited by burak450; - 4th October 2008 at 00:25.

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    Quote Originally Posted by burak450 View Post
    Hi skimask,

    Maybe I am always wrong...

    Maybe my english isnt good enough...

    But I think, it is not shame not knowing it is shame not learning ...

    If you wont help me ,dont reply my words please...

    When I read your words,I feel like humiliated

    Thats all...
    No one is trying to humiliate you. In fact, it looks to me like skimask is giving you a lot of help. Complete code is not help.

    Let me ask you to do something. Imagine how hard it is to help someone long distance like this? Sure the code can be posted and looked at easy enough, but what about the hardware that wee can not see or test.

    Now think about the kind of person that will tale the time to work through the kind of problems that we see on this forum.

    Now think about how you might make the person that is trying to help feel with your last post.

    There are many many people here that could help, but only a few that take the time. No wonder there are so few willing to help.

    That all said.

    Try a battery pack on your servos. If it is noise from the power supply like Nick said, that will stop it.

    And like skimask ask, show a picture of you power supply. As you are finding out, power supplies can be tricky.
    Dave
    Always wear safety glasses while programming.

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    Quote Originally Posted by burak450 View Post
    Hi skimask,
    Maybe I am always wrong...
    Maybe my english isnt good enough...
    But I think, it is not shame not knowing it is shame not learning ...
    If you wont help me ,dont reply my words please...
    When I read your words,I feel like humiliated
    Thats all...
    Whoa, hey, back up a bit here... Your English is a lot better than my __________ (insert any language other than English here) and completely understandable (if not a bit grammatically incorrect, but that's ok).
    What I'm saying is that you aren't listening very well. We believe the core of the problem to be power issues and you keep talking everything but power issues (i.e. code problems, etc) thinking that your power is infallible, when judging from the problems described, it looks like a power issue...for the last 60-ish posts. How long did it take you to finally add a capacitor?
    Think what you want, but in the end, I'd bet on a power supply problem...

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    Quote Originally Posted by skimask View Post
    Whoa, hey, back up a bit here... Your English is a lot better than my __________ (insert any language other than English here) and completely understandable (if not a bit grammatically incorrect, but that's ok).
    What I'm saying is that you aren't listening very well. We believe the core of the problem to be power issues and you keep talking everything but power issues (i.e. code problems, etc) thinking that your power is infallible, when judging from the problems described, it looks like a power issue...for the last 60-ish posts. How long did it take you to finally add a capacitor?
    Think what you want, but in the end, I'd bet on a power supply problem...

    It's not about not listening,its about not understanding..

    Sometimes i dont get what all people said because i dont know too much about power issue...

    I appreciated what you did for me up to now..But say your word please more polite...

    I swap the servos and tried first program(single servo program) which worked perfect...

    But stiill remained vibration on up_down servo.I think thats interesting..

    There is no vibration or oscillation whatever you called, on left-right servo...

    Is this servo broken?

    I have to tell you another things...

    I connected 9v battery same problems remained...

    I tried two parallel 7805 and it makes servo slow because when I tried a single 7805 ,it worked fast...

    Thats gonna be a weird question but i want to ask:

    Second servo wanna have more current? Or is it broken?

    I cant explain why it vibrates...

    Finally I tried to connect two servo and tried to work with program which skimask wrote..

    Speed was ok but up-down servo vibrated again.Left-right worked well...

    I think there is no error in program that you wrote skimask...

    But i dont know where the problem is...
    Last edited by burak450; - 4th October 2008 at 12:57.

  9. #9
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    Try tipping your gizmo on its side, up and down becomes left and right. If that helps then counter balance.

    We realy need to see your power supply! Two 7805s slower than one?

    Swapping the servos had no change? The up and down servo worked correctly as the left and right servo? If so, the servo is not broken, yet.
    Dave
    Always wear safety glasses while programming.

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    I swapped the servos and up-down servo didnt work correctly.It goes up and down but it makes vibriation...maybe that means its broken...

    thats my power supply...




    and thats 7805 circuit...



    and thats two servos..



    I think there are two possibilities about my problem
    power problem or broken servo...
    Last edited by burak450; - 4th October 2008 at 14:15.

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