Thread Tools
This thread is privately moderated by Jack Crossfire, who may elect to delete unwanted replies.
Nov 25, 2012, 03:06 AM
Registered User
Jack Crossfire's Avatar
Thread OP

Death of a camera mount

It looks like the PT785-S Pan & Tilt System is getting voted off the island. It's perfect for smooth motion of a manually controlled camera to rough positions, but the application here is automated motion control to precisely reproducible positions, which it can't do.

It returns to a very rough position & can't return to the same position if manually pushed out of position or restarted. Using either an IMU or the raw pot voltages to detect the position was worse than just using the PWM values, so the position readout eventually used the PWM values & accepted any discrepancies in the translated position.

The only advantage it had was very smooth motion, but the pointing errors were bigger than any jerkiness in the motion of a servo. Developing a precisely reproducible motion control platform is a full time job for a 6 month timescale & all this investment in squeezing the last bit of accuracy out of robotics probably isn't worth as much as making a good tablet interface.
Sign up now
to remove ads between posts

Quick Reply
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold FS Imex Ozzie Tires Mounted On Death Star Wheels CHEAP!! fastmax Cars - Cars and Parts (FS/W) 0 Oct 31, 2008 03:44 PM
Video camera = Switchback death Wright Flyer Parkflyers 1 Jul 13, 2002 01:54 PM