Info on servos.
I'm considering a project that uses 2 of the IR range finding systems offset
by 90 degrees on top of a servo that rotates a quarter turn back and forth
with the two range finders covering the left and right half of 180 degrees.
I want to get a series of measurements to judge the surrounding distances
from a central point. This will be scanning back and forth, so I need each
"measurement" to be at a guaranteed location.
My question is, is a servo controllable enough to judge position, or should
I be using a stepper motor? I'm concerned about drift. I may have to use
and encoder on the rotating platform, I guess.
I was going to use one range finder and rotate it 180 degrees, but it takes
so long to get a measurement (50ms) that it makes sense to have two of them
working at the same time. BTW, does anyone know how long it takes to read
the digital output of those devices? I'm guessing 50ms worst case, but I'm
hoping for much less.
Thanks. Jeff
by 90 degrees on top of a servo that rotates a quarter turn back and forth
with the two range finders covering the left and right half of 180 degrees.
I want to get a series of measurements to judge the surrounding distances
from a central point. This will be scanning back and forth, so I need each
"measurement" to be at a guaranteed location.
My question is, is a servo controllable enough to judge position, or should
I be using a stepper motor? I'm concerned about drift. I may have to use
and encoder on the rotating platform, I guess.
I was going to use one range finder and rotate it 180 degrees, but it takes
so long to get a measurement (50ms) that it makes sense to have two of them
working at the same time. BTW, does anyone know how long it takes to read
the digital output of those devices? I'm guessing 50ms worst case, but I'm
hoping for much less.
Thanks. Jeff