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Do people do informal freelance circuit design?

S

SteadiSteve

Jan 1, 1970
0
Newbie question here....

I'm interested in paying somebody to design some circuitry for me and/or
provide advice of the same. Do people do this sort thing freelance? Would it
be strange to approach, say, EE students at a university or something and ask
them if they want to make a buck? Anything is possible of course but are
people going to look at me strangely with such a request?

What am I trying to do? I want to take two hand-driven shafts with
(presumably) encoders on them and drive two servo motors to duplicate the
movement. The purpose is to allow remote control of a motion picture geared
head. The motors need to be reasonably powerful (in other words we are not
talking about little R/C motors here).

It seems to me this is an application that has been worked out a lot of ways
before ...CNC, robotics, remote controls, etc.

I have a elementary understanding of motion control/robotic control and I'm
reading books to learn more but the design of this is clearly beyond me at this
time. That said, it seems to me that it is, in a sense, not that difficult.
I imagine there are many off-the-shelf parts now that could do things like
drive the servos. I do believe I could write the software myself....I
programmed in another life.

It would be a project from I could learn a lot but would also have an immediate
practical value for me.

Thoughts anyone?
SS
 
T

Thomas C. Sefranek

Jan 1, 1970
0
SteadiSteve said:
Newbie question here....

I'm interested in paying somebody to design some circuitry for me and/or
provide advice of the same. Do people do this sort thing freelance? Would it
be strange to approach, say, EE students at a university or something and ask
them if they want to make a buck? Anything is possible of course but are
people going to look at me strangely with such a request?
It is very common.
What am I trying to do? I want to take two hand-driven shafts with
(presumably) encoders on them and drive two servo motors to duplicate the
movement. The purpose is to allow remote control of a motion picture geared
head. The motors need to be reasonably powerful (in other words we are not
talking about little R/C motors here).
Servo's come in all sizes and powers.
 
R

Rich Grise

Jan 1, 1970
0
You're not looking for servos, but synchros. ALso known as "Selsyn
Motors." Try googling on those terms.

(5 wires and an AC power source - you turn one shaft, the other
unit turns exactly the same.)

Good Luck!
Rich
 
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