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Unread 22-02-2005, 00:52
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
Team Role: Teacher
 
Join Date: Jul 2002
Rookie Year: 2002
Location: Glendale, CA
Posts: 8,509
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Re: Victors not synchronized - dual motor train

We were getting really bad buzzing. Part of this is due to the Fisher Price being combined with the two Chias. At startup, I assume they are "fighting" (not spinning opposite directions, but not spining at the same speed) a little bit. Anyhow, I'm not exactly sure what we did, but we either calibrated the Victors or switched the motor polarity (and pwm values) or both. Anyhow, the buzzing is almost completely gone, only very minimal (due to drag and the FP). It was an electrical, not mechanical induced sound.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004