I'm trying to control an adjustment knob in another room. It's not a volume
control on a stereo, but the aim is essentially the same as that application
that I keep stumbling across on the web. This knob controls air flow on a
machine at 24psi from 0 to 10L/min.
The Machine is not at my house so I have yet to determine the torque
requirements or degrees of rotation required to span that scale. I realize
those two things will determine the type of rotary actuator I select.
Problem is that I've spent five hours on Google, Google Image, Aliexpress,
various hobby RC sites, Mouser.. Digikey... et al, etc... and cannot find
anything so simple as a plain-jane rotary remote/radio that controls a rotary
actuator (must be rf for multi room and multi floor use).
Things like this frustrate me. Seems like such a basic need would be as common
as flat head screwdrivers, but I find kits and products that almost fit the bill
or, more often, offer many more bells/whistles than my simple need for five
times what I'd like to spend... which would be nice around 20 USD for both
items. New, used, surplus, take-offs. I don't mind.
So I SIMPLY want to control a rotary dial on a machine from up to 60 ft or so
with RF using a remote device that is as close to a one rotary knob (emulating
the rotary knob it's commanding across the house) without added features as
So the basics...
Rotary servo motor to control a dial that meters air. Assume for the time being
that this know peak to peak is less than 270degrees.
A controller/radio with as close to an ideal one rotary input (no other
distracting functions) that commands the remote dial with RF for use between
rooms and between floors.
Off-the-shelf interface that requires a minimum of tuning, setup, firmware, etc,
in order to use these two together such that the control knob can be indexed
against the remote knob and maintain those settings over time. For instance,
sitting a few feet away when the machine knob is remotely turned to deliver
Any advice at this point would be HUGELY appreciated.
7 years ago