Quote:
Originally Posted by Brandon_L
Im quite interested in how 148 decided on where to have your arm balanced. Just straight out horizontal? Or something game specific like near the top rack in logomotion?
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In 2011 we disconnected the motor from the gearbox and balanced at about horizontal as baseline value, then tweaked until the drivers & programmers were happy. In some years, we've had to reduce this amount due to the arm lifting up at the starting position. In 2011 we had a very simple "drive until position, then cut power" control scheme. Combining the Victor brake-mode with surgical tubing balance and this control allowed for easy pre-positions.
We tuned in surgical tubing & position code through iteration -- test, tweak, repeat. (Iteration is always the answer, of course.)
In my experience, it is better not to overthink it, just add some surgical tubing and tune it to taste...
-John