View Single Post
  #14   Spotlight this post!  
Unread 26-07-2015, 17:01
thatprogrammer's Avatar
thatprogrammer thatprogrammer is offline
Registered User
AKA: Ahad Bawany
no team (None)
Team Role: Programmer
 
Join Date: Apr 2014
Rookie Year: 2014
Location: Florida
Posts: 609
thatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond reputethatprogrammer has a reputation beyond repute
Re: Which sensors should be used throughout the robot?

Quote:
Originally Posted by Thad House View Post
So the input shaft of the encoder is 1/4 inch. So its press fit in. Then teams zip tie the wires down, which stops the housing from spinning.
Okay, I thought you'd simply need to select the 1/4 inch diameter option for the encoders.
When would you use a high cpr vs a low cpr? It seems to me that using a high cpr encoder on a fly wheel might overwhelm the fpga. Any formula to figure out the max possible?

One last question: 971's mentor mentioned their robot featured:
Quote:
"encoders with index pulses and used a potentiometer with those to resolve the integer number of revolution ambiguity."
How much % of error can one expect simply using an encoder rather than this set up? Is this set up really necessary or simply a practice that, while good for inspiration and education, is a bit overkill?
Thanks for all the help so far!