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 Pen Arm Servo wear?
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By: Anonymous: vomo () on Thursday, April 21 2011 @ 03:23 PM PDT (Read 1819 times)  
Anonymous: vomo

Hi folks,

at first, thanks to the developers for their very very great work.

Im from Germany and in order to save tax and shipping, I decided to build the egg-bot by myself.

Mechanics are out of 2mm laser cutted stainless steel, I devided the electronic to drive a standard stepper board from the china-man ;-)

Everything works very well, Im really exalted!

Now, after lets say 50 eggs Ive a problem:

The servo sometimes dont work, its a wear problem of the poti inside of the servo.
This one is also a cheap China-device. ;-(
So my question: has anyone else such problems with the servo? Are expensive ones are more durable?
Containment action is to vary the upper and lower position or to modify the rod position, but its only a question of time, until the servo is complete out of order...

Any ideas? Thanks for yours anwers!
Best regards,
Vomo






       
   
By: Windell (offline) on Thursday, April 21 2011 @ 03:49 PM PDT  
Windell

The servo sometimes dont work, its a wear problem of the poti inside of the servo.
This one is also a cheap China-device. ;-(
So my question: has anyone else such problems with the servo? Are expensive ones are more durable?



Yes, servo quality varies a lot. The ones that we have are not the very cheapest, but they are inexpensive. One thing that matters a lot is the voltage that you use to drive it. We found (for example) that at 9V, the servo motors would wear out very quickly, and at lower voltages (5 V, say), they seem to work almost forever. Higher voltage causes more wear on the motor, gears, and pot-- so you might try lower voltage on your next one.


Windell H. Oskay
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By: Anonymous: vomo () on Thursday, April 21 2011 @ 03:57 PM PDT  
Anonymous: vomo

Hi Windell,
thanks for your very fast and good answer!

Im driving with 5V, also.

Okay, Ill try to get a better one next time.

After Easter, im going to modify my website and show my bot and the differents to yours.

Best regards and good night (its 0:56 in Germany :-)

Vomo






       
   
By: Windell (offline) on Thursday, April 21 2011 @ 05:26 PM PDT  
Windell

Is it possible that the load on your servo is much higher from the steel and all?


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