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The standard servo is a closed loop control system, using the pot as feedback to tell what position the arm is in. When modified, the pot never moves, so the servo keeps trying to approach whatever position you have set with the PWM. The farther the change in angle, the faster the servo will move, so speed control is also accomplished in this manner.
These were unmodified servos, so the potentiometer should have actually stopped them from moving when they got too far. Although your comment about the momentum from one end to the other still sounds possible...Thanks for your input, btw
Its frightening to think that making a mistake in your programming can result in destroying hardware components. Especially the actuators, which are usually the most expensive part of any robot.
Quote from: VegaObscura on December 07, 2010, 11:05:40 AMIts frightening to think that making a mistake in your programming can result in destroying hardware components. Especially the actuators, which are usually the most expensive part of any robot.Well there's a lot of ways your programming could result in destroying hardware. For example a program that makes your robot drive full speed into a wall or off a cliff.
I suppose I'll need to get my hands on an oscilloscope then...
Or have the throttle in your car stick.