View Single Post
  #4   Spotlight this post!  
Unread 01-02-2011, 20:09
Greg McKaskle Greg McKaskle is offline
Registered User
FRC #2468 (Team NI & Appreciate)
 
Join Date: Apr 2008
Rookie Year: 2008
Location: Austin, TX
Posts: 4,748
Greg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond reputeGreg McKaskle has a reputation beyond repute
Re: Gaff tape on carpet

The tutorial on ni.com/frc discusses mounting just a bit.

If the sensor gets too close to the carpet, less than a few millimeters, there is not a good return path for the reflected light. As the sensor is raised above a few inches, I saw a dropoff in the sensitivity.

Especially if you are going to tune things at the regional, I'd use the built-in LEDs to get a sense of how the height affects the signal using your tape and carpet, and if you can design it, allow for easy changes to mounting height. I used extra pieces of frame to raise and lower by about 1.5" increments.

Greg McKaskle
Reply With Quote