servo motor resets 16f877a

[burak450]

Hi guys,

I bought 9v 3.5 A power supply but Only problem that i have "vibration" is still same...

It is so weird,up-down motor vibrates only some values....

I dont know what to do but I think I gotta take off up-down motor...

Maybe these values are limits of servo as skimask said...

I will connect up-down motor to left-right motor with different way so I can use values which didnt make vibration for up-down motion....

Thats the only solution that I can find...

Any other ideas????

[mackrackit]

I bought 9v 3.5 A power supply but Only problem that i have "vibration" is still same...

Have you changed the regulators also? To handle the extra amps...

I will connect up-down motor to left-right motor with different way so I can use values which didnt make vibration for up-down motion....

Have you tried laying the apparatus on it side to see if the up/down servo works correctly?

Any other ideas????

Have you tried counter balancing the up/down servo?

[Macgman2000]

Ok we are getting somewhere now. No reset.... Vibration is an indication that the servo is having trouble settling to a position. Mackrackit is pointing you in the right direction, you need to somehow balance the structure or unload it.

Think of a way to keep the weight of the turret from sitting directly on the servo shaft. The shaft of a servo is geared to a potentiometer which means anything that back drives the servo shaft will alter the potentiometer. That leads to vibration (or low level oscillation). The idea is only to use the servo to move, not bear the weight of the structure. Beyond that there is really no more that anyone can do for you, the structure mechanics is the issue now.

Nick

[burak450]

Hello everyone..

I solved the problem.Servo doesnt reset itself now...It was because of code...

Servo doesnt vibrate now..I changed the motor and bought an expensive one.the only problem was my cheap and broken servo...

Thanks everybody who helped me....

[skimask]

Hello everyone..
I solved the problem.Servo doesnt reset itself now...It was because of code...
Servo doesnt vibrate now..I changed the motor and bought an expensive one.the only problem was my cheap and broken servo...

What part of the code did you change to fix the problem?
Broken servo - well, ok, it happens, hasn't happened to me yet, sure, could happen. It's just that everything you suggested pointed right to a power issue.

[burak450]

I think this part what you said....

Look at the loop in your code.
Aboslutely no 'bounds' checking.
What if...T = 0? Then pauseus = 20000, ok no problem...
What if T=2000? Then pauseus = 0, ok not much of a problem...
What if T=2001? Then pauseus = 65526, ok, shouldn't happen because you've got T defined as a BYTE

But...what happens when you try to drive the servo out of it's physical limits?
What happens to the current draw if you hold a servo that's trying to move? Hook up an ammeter and find out real quick. And if you don't have an ammeter, hook up a voltmeter to your 'battery' and try it and see what happens to your voltage...