View Single Post
  #1   Spotlight this post!  
Unread 08-05-2012, 10:35 PM
Michael Hill's Avatar
Michael Hill Michael Hill is online now
Registered User
FRC #3138 (Innovators Robotics)
Team Role: Mentor
 
Join Date: Jul 2004
Rookie Year: 2003
Location: Dayton, OH
Posts: 1,567
Michael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond reputeMichael Hill has a reputation beyond repute
Are we still using only 256 unique PWM steps?

It seems like that limitation should be lifted when using the cRIO board, which appears to be a rebranded NI-9076 board running the Xilinx Spartan-6 LX45 FPGA, which looks like it is a 16-bit controller, and that seems to usually be the "bit chokepoint" when trying to generate a pwm signal.....This isn't a limitation by the victors or jags are they? I haven't taken apart a Victor, but it looks like there are just a bunch of LM317s in there. It looks like there's a large capacitor. Now if you just have an RC filter in there (which explains the large cap), there should be no problem accepting a higher resolution PWM signal. I haven't tried this. Would that be possible to do? Sometimes 8-bits just isn't enough.
Reply With Quote