RF based motorized volume control

shanindia

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Joined
Mar 10, 2013
Messages
68
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Location
Hyderabad
Hi All,

I am currently using a RF based source selector in my preamp made using Quad's 4017 based circuit (http://www.hifivision.com/diy/53964-dcb1-build-5.html#post617930) and source selector from Sachin.

Now I am planning to add volume control to the same RF remote, using Alps motorized pot. Quad had used PGA2320 based volume control, but it requires pre-programmed microcontroller, and I don not have the capability for microcontroller programming.

Therefore I was wondering if there is a way to use the spare momentary connections from the RF switch to control the voltage for up/down of the motor. However as per my understanding it would also require defining the time of the voltage application such the steps for volume up/down is precisely defined.

There are some circuits online using audrino and IR remote. But I do not want to use IR, rather use the existing RF remote.

Is there a simple way to achieve this? Please note that I do not have any background in programming, but can work with audrino if needed.

Thanks,
Shantanu
 
Shantanu, see post #11 here - it is quite easy to make it work with
the rf remote you seem to have already - about 4 tip101 transistors and 4 2.2k
resistors.

https://www.head-fi.org/threads/need-idea-for-12v-motor-control-alps.376845/

Of course, you will need an alps motorized pot similar to this -

ALPS RK168 Motorized Potentiometer A100KX2

Another possibiity is to use a volume control IC like the MAX5288 -

5288.gif


- Quad
 
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