Yet Another IR Remote Volume Controller? No, I want one WITHOUT uC - diyAudio
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Old 29th November 2012, 07:53 AM   #1
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Question Yet Another IR Remote Volume Controller? No, I want one WITHOUT uC

I want to add an IR remote volume controller to my tube amp (C3g+6C4C). There are a lot of circuits based on microcontrollers (AVRs, PICs, '51s etc.), but I have found 0 (zero) pure analog ones. Are there any special funtion IC, e.g. RC5 decoders, or discrete solution I can utilise to control an Alps RK168 series potentiometer?
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Old 29th November 2012, 07:34 PM   #2
rsavas is offline rsavas  Canada
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I think all the dedicated RC5 decoder IC's are all obsolete, so a MCU is the only modern day solution for what you want.
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Old 30th November 2012, 03:38 PM   #3
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If you don't want to go through the hassle of programming the microprocessor, there
are cheap kits on ebay.
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Old 30th November 2012, 10:33 PM   #4
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Yes, I know about kits from different online shops. Found a couple. I know about discontinued SAA chips. Yet I thought someone had had a different approach. Anyway, thanks.
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Old 3rd December 2012, 07:09 AM   #5
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Old 3rd December 2012, 07:43 AM   #6
balerit is offline balerit  South Africa
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Quote:
Originally Posted by yagoolar View Post
Yes, I know about kits from different online shops. Found a couple. I know about discontinued SAA chips. Yet I thought someone had had a different approach. Anyway, thanks.
I use the TA7630AP (also TDA 1524a) which are pure analog and would like to make it remote controlled but I know nothing about pics. The chip's volume, bass etc. is controlled by a 0-5v variable voltage on their pins and I was wondering if one could use a microcontroller to vary the voltage on these pins?

http://novelbooks.weebly.com/camm-eq...amplifier.html

Last edited by balerit; 3rd December 2012 at 07:47 AM.
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Old 3rd December 2012, 10:50 AM   #7
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You can do that with any uC with digital to analog conversion. The choice depends on the number of lines you want to control.
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Old 3rd December 2012, 11:59 AM   #8
balerit is offline balerit  South Africa
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Quote:
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You can do that with any uC with digital to analog conversion. The choice depends on the number of lines you want to control.
Well, I would want it to obviously use a tv or similar remote control, maybe have a learning ability and would control 4 lines: Volume, bass, treble and balance. It must have mute, fade in fade out and have a preset switch on volume. But as I mentioned don't know the programming side of things, but must say my pre amp is a great sounding one.
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Old 4th December 2012, 04:59 AM   #9
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All u want cannot be achieved easily without using a preset equaliser chip. U can do it with motorized pots but will be costly and getting the pot value will be difficult to replace in an existing circuit. However fade in and fade out will pose its own issues.

Gajanan Phadte
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Old 4th December 2012, 05:08 AM   #10
balerit is offline balerit  South Africa
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Quote:
Originally Posted by balerit View Post
I use the TA7630AP (also TDA 1524a) which are pure analog and would like to make it remote controlled but I know nothing about pics. The chip's volume, bass etc. is controlled by a 0-5v variable voltage on their pins and I was wondering if one could use a microcontroller to vary the voltage on these pins?

DIY Preamplifier - The Book Worm
Sorry guys, this is the part number: TA7630P
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