rc potentiometer

[CharlieM]

I have some hydraulic machinery controlled via a 5kohm pot, an amplifier
and solenoids etc.

I'd like to control wirelessly. Is there some "off the shelf" products
can buy to replace a wired potentiometer with a remotely controlle
potentiometer?



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Posted through http://www.Electronics-Related.com

 

[Jamie]

CharlieM wrote:

I have some hydraulic machinery controlled via a 5kohm pot, an amplifier,
and solenoids etc.

I'd like to control wirelessly. Is there some "off the shelf" products I
can buy to replace a wired potentiometer with a remotely controlled
potentiometer?



---------------------------------------
Posted through http://www.Electronics-Related.com
I think you should look into a wireless pendant and using a

motorized Potentiometer (MOP)..
http://www.potentiometers.com/select_motorized.cfm

and there are many wireless pendant products out there, look for
one that offers the receiver with multiple outputs..

If you don't want to go the route of motorized pots, you can use
something that is cheap in the PLC line that offers analog input and
out put to set the voltage for you. THe mulit function pendant can then
operate the inputs.. Go to AutomationDirect and look at their line of
PLC's. the "CLICK" line has a CPU with analog and the software is free,
you only need the buy a cable or make one.

I they also offer wireless pendants.

Jamie

 

On Sun, 13 Mar 2011 08:03:02 -0500, "CharlieM"
<cormorant@n_o_s_p_a_m.bigpond.com> wrote:

I have some hydraulic machinery controlled via a 5kohm pot, an amplifier,
and solenoids etc.

I'd like to control wirelessly. Is there some "off the shelf" products I
can buy to replace a wired potentiometer with a remotely controlled
potentiometer?



---------------------------------------
Posted through http://www.Electronics-Related.com

Not aware of any "off the shelf" that does what you want.

You suggest remotely controlled- the obvious easy way is "wired remote
control" (just extend the leads on the pot to the place you want to
control it from). That will work up to some length before electrical
noise starts affecting the wire runs.

But a hobby style radio control servo could turn the knob you have
now, or you could replace the internal servo feedback pot with a dual
section pot and wire one to the servo to provide it feedback and use
the other section to control your hydraulic gizmo.

Alternatively a "motorized" pot is a great way to do it - connect up
one of the off the shelf tiny remote controls to it for button push
up/down control.

There's better electronic ways to do it but maybe not if your
experience is limited.

The pot you have probably just inputs a DC voltage to some circuit
that controls the hydraulic system. The electronic way would be to
find the voltage it has to supply and build a circuit to supply it.

What about safety? One assumes this isn't getting connected to a
gantry crane carrying molten iron or something? I hear hydraulic and
start imagining something huge heavy and with a lot of potential for
damage.

 

[tuinkabouter]

Op 3/13/2011 2:03 PM, CharlieM schreef:

I have some hydraulic machinery controlled via a 5kohm pot, an amplifier,
and solenoids etc.

I'd like to control wirelessly. Is there some "off the shelf" products I
can buy to replace a wired potentiometer with a remotely controlled
potentiometer?

And what distance do you need?

blue tooth, wifi, phone?

--
pim.

 

[Jasen Betts]

On 2011-03-13, CharlieM <cormorant@n_o_s_p_a_m.bigpond.com> wrote:

I have some hydraulic machinery controlled via a 5kohm pot, an amplifier,
and solenoids etc.

I'd like to control wirelessly. Is there some "off the shelf" products I
can buy to replace a wired potentiometer with a remotely controlled
potentiometer?

standard remote control hardware (as used by remote control model
enthusiasts) sounds like it would fit the bill. just hook a servo the
the pot shaft.

you'll need a transmitter, receiver, servo, connecting cables, and a
power supply of some sort for the receiver-servo pair, (the transmitters
usually use batteries)


if you can use PWM instead of a pot you can probably do it with just
the transmitter and receiver.



--
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