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[DPRG] Absolute reference for angular position
Subject: [DPRG] Absolute reference for angular position
From: Eric Sumner
kd5bjo at gmail.com
Date: Tue May 27 11:40:25 CDT 2008
> Can anyone suggest an alternate method for measuring angular position with a
> high degree of accuracy and repeatability? All I really need is an "index
> mark" to tell me when the robot returns to a specific heading and not a
> continuous readout of angular position.
If you're only going to be using this to calibrate your rotation, you
could use a beacon and a directional receiver; a 38kHz IR receiver
module might work for this, if you restricted its field of view. You
could do something similar with a laser pointer and a photodetector;
whenever the laser is directly falling on the detector, its value will
go up sharply.
-- Eric Sumner
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