Thread: Potentiometer
View Single Post
  #10   Spotlight this post!  
Unread 08-02-2011, 12:22
Matt Krass's Avatar
Matt Krass Matt Krass is offline
"Old" and Cranky. Get off my lawn!
AKA: Dark Ages
FRC #0263 (Sachem Aftershock)
Team Role: Mentor
 
Join Date: Oct 2002
Rookie Year: 2002
Location: Long Island, NY
Posts: 1,187
Matt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond repute
Send a message via AIM to Matt Krass
Re: Potentiometer

Quote:
Originally Posted by RyanN View Post
...But if you do buy a cheap potentiometer, or actually, most potentiometers (but cheap ones mostly). Even though they rotate at 270 degrees, don't expect to get all 270 degrees of data from it. Cheap ones get probably 200 degrees of reliable data. Decent 270 degree ones maybe a little more.

My point: don't get a potentiometer that will just have enough rotation to work. It won't.
Agreed, plus you want to be able to sense your soft limits before you're right on top of them, which requires some extra room at either end of the range.

We've used 300 degree pots for about 250 degrees maximum range, with some breathing room.

Matt
__________________
Matt Krass
If I suggest something to try and fix a problem, and you don't understand what I mean, please PM me!

I'm a FIRST relic of sorts, I remember when we used PBASIC and we got CH Flightsticks in the KoP. In my day we didn't have motorized carts, we pushed our robots uphill, both ways! (Houston 2003!)