Rotary encoders are readily available with rotate+push action  - ideal
for this sort of application, and you don't need an ADC to read them!
Piher and Alps are 2 makes that come to mind.=20

>> I have a couple of applications where I need simple and compact local =
control.
>> I've settled on a potentiometer and switch arrangement where the pot =
selects
>> the desired value and the switch locks the value in and advances to =
the next
>> input. I'm about halfway through my testing.
>>
>> I realized that two separate components are really not necessary. All =
I need
>> is a pot with an integrated switch. This would both reduce the space =
required
>> for the user interface and simplify the interface because it can then =
be
>> operated with one hand without having to move that hand from one =
component to
>> the other.
>>
>> But after searching for a bit I also realized that the commonly
>> available component doesn't really meet my need.  Common pot/swtch
>> combos are organized an a volume/power knob type arrangment.  The
>> switch clicks on/off at one end. What I need is a switch that can be
>> pushed with the know set in it's current position.
>>
>> I'm envisioning operation where the interface is activated bu pushing =
the knob.
>> The display will flash the value to be set. The knob is turned to the =
desired
>> value. Then the knob is pushed again to set the value and advance to =
the next
>> one. Once all the values are set the interface is deactivated until =
the knob
>> is pushed again.
>>
>> My two immediate applications are setting the time on my =
sunrise/sunset
>> controller and a programmable thermostat I'm putting together. But =
clearly
>> it has applications in dimmers and any other kind of control interface=
 where
>> the switch indicates start/advance/completion and the pot sets the =
value.
>>
>> So does such an item exist?
>>
>> Let me know. TIA.
>>
>> BAJ
>>
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