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Arduino Forum Servo Movement At Power Up Before Initialization
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  • servo
  • arduino
Related

Servo Movement At Power Up Before Initialization

colporteur
colporteur over 1 year ago

I am experiencing a problem with the servos operations on this project that members helped me develop.

When the Mega is powered on the servo track to a position before going to the initialized position. The power on position for the servo is outside the range of motion for the animation. The movement has over extended some mechanical connections and caused breakage.

I went in search of a solution and found this post. It doesn't solve the problem but the discussion is an example of what I am experiencing. One of the suggestions is to relay control power. Only apply power to the servo after full initialization thereby avoiding the issue.

I'm curious if anyone has experienced a servo movement issue on power up and how they may have solved it.

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  • shabaz
    shabaz over 1 year ago +3
    Hi Sean, The power on position is really the position with no PWM applied. I can think of four potential solutions. (a) Ideally there would be a mechanical solution (i.e. as Frank mentions, to try…
  • colporteur
    colporteur over 1 year ago in reply to beacon_dave +3
    I successfully adjusted the physical connection on one servo today after determining "horn initialization position" I was fortunate since the horn works from 90 to 0. 90 being the start and the initialization…
  • genebren
    genebren over 1 year ago in reply to colporteur +3
    Hi Sean, I build a series of DMX driven decoders that come in 6 and 12 servo channels. These boards have a switchable power bus that provides up to 10 Amps of servo power. On power up, the servo power…
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  • robogary
    0 robogary over 1 year ago

    I had a similar problem with a cheapo ( but 200W) audio amp powering up with the speakers, causing the speakers to pop loudly. I had to use the control power relay thought to keep the speakers disconnected from the amp until the amp was fully powered up.  

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  • robogary
    0 robogary over 1 year ago

    I had a similar problem with a cheapo ( but 200W) audio amp powering up with the speakers, causing the speakers to pop loudly. I had to use the control power relay thought to keep the speakers disconnected from the amp until the amp was fully powered up.  

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  • colporteur
    0 colporteur over 1 year ago in reply to robogary

    oh those pops are a stab to the heart of audio buffs.

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