Re: [Discuss-gnuradio] VFO tuning knobs

[Chris Kuethe]

Also, you can instantiate a controlport or xmlrpc server in your
flowgraph and then send tuning commands their endpoints.

How you generate those tuning commands is up to you... I suppose
someone who knows more about GUI programming than I do could come up
with a touchscreen app that simulates a physical knob you can turn and
emits various re-tuning events.

On Mon, Dec 28, 2015 at 9:34 AM, Albin Stigö <address@hidden> wrote:
> Lots of people are building their own with a microcontroller and some
> kind of rotary encoder. One super easy way is to use the teensy
> arudino clone (or similar) since they already have libraries for USB
> HID so you can make your scroll wheel act like a mouse scroll wheel.
>
> Rotary encoders exist in many different qualities. Optical rotary
> encoders are really nice, and expensive.
>
> I've also seen people using stepper motors as encoders.
>
> --Albin
>
> On Mon, Dec 28, 2015 at 12:33 PM, Daniel Pocock <address@hidden> wrote:
>>
>> I realize that SDR provides more than one way to view the spectrum and
>> tune to a frequency, but I can imagine some people feeling comfortable
>> with a tuning knob similar to a traditional radio.  There doesn't appear
>> to be any technical reason why a VFO knob could not be part of an SDR
>> application.
>>
>> A quick Google search for USB VFO tuning knobs found these links:
>>
>> http://df3cb.com/ft2000rc/documentation/interfaces/flexcontrol.php
>>
>> http://www.eham.net/articles/21941
>>
>> Has anybody tried anything like this with GNU Radio?
>>
>> Regards,
>>
>> Daniel
>>
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-- 
GDB has a 'break' feature; why doesn't it have 'fix' too?