View Single Post
  #1   Spotlight this post!  
Unread 12-01-2005, 15:15
Leav's Avatar
Leav Leav is offline
Spud Gun Division
AKA: Leav Oz-Ari
FRC #3316 (D-Bug)
Team Role: Mentor
 
Join Date: Dec 2004
Rookie Year: 2005
Location: Technion, Haifa, Israel
Posts: 774
Leav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond reputeLeav has a reputation beyond repute
Send a message via ICQ to Leav Send a message via AIM to Leav Send a message via MSN to Leav
Must Connect PWM cable in reverse for victor to work?

We connected our cables as per the instructions: Black side to black side on the Victor, and to the black side on the Robot Controller.

it didnt work. the victor flashed orange. (no PWM signal)

we checked everything, and verified the existance of a PWM signal with a servo.

after about 15 minutes Gal Longin (a teammate) had an idea which at first seems quite stupid: reverse the cables on both sides:
white cable goes to black terminal on victor, and white cable goes to black terminal on the controller.

it worked!

logic dictates that if you changed both sides, it should be the same.

after another 5 min we checked cables that we got with the RoboVision kit, they worked with the normal black to black setting....

how can this be???

-Leav
__________________
"We choose to build robots this season and do the other things; Not because they are easy, but because they are hard."
-Paraphrasing JFK

Participated in FIRST as a student: 2005-2006 (But still learning every season!)
Mentor: 2008 - ? (Team 2630 2008-2011, and Team 3316 since 2013)
Engineer: 2011 - ? (B.Sc. and M.Sc. in Mech. Eng. from the Technion IIT)
FIRST Volunteer - 2007 - ? (MC, FTA, FIRST Aid etc.)