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Unread 21-06-2016, 12:33
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Greg Needel Greg Needel is offline
REVving up for a new season
FRC #2848 (All-sparks)
Team Role: Engineer
 
Join Date: Jan 2002
Rookie Year: 2002
Location: Dallas, TX
Posts: 3,104
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Re: SD540 Motor Controller

Quote:
Originally Posted by JesseK View Post
I remember these being the cheapest when they came out, but perhaps the SPARKs came out after the SD540's and dove below the price point? Am I remembering this correctly?
We didn't learn about the SD540 until days before the public announcement, at which point our prices had already been set. The SD540 was available to purchase a few weeks prior to the SPARK, but their existence didn't influence our cost.



If I can step back from my obvious SPARK bias a bit, my main issue with the SD540 is that the calibration switch and brake coast mode switch is on the bottom of the unit. I don't understand from a user interface standpoint how this works for teams. Do teams have to lift up their motor controllers while the robot is powered and enabled to calibrate them? Also my team plays with the brake/coast mode all season for different applications and it would be frustrating to me to have to turn over each controller for access to this feature.
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Greg Needel│www.robogreg.com
Co-founder REV Robotics LLC www.REVrobotics.com
2014 FRC World Champions with 254, 469, & 74

Last edited by Greg Needel : 21-06-2016 at 12:44.
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