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-   -   Yet another Volume controlers and source selections (http://www.diyaudio.com/forums/analog-line-level/149597-yet-another-volume-controlers-source-selections.html)

danzup 25th August 2009 02:24 PM

Yet another Volume controlers and source selections
 
5 Attachment(s)
I will post more projects that was made by me :
1. Volume controller / source selector for motor potentiometer ( like Alps blue velvet ) :
-schematics
-avr atmega8515 soft
-pcb
On atmega8515 you have to write only the fuse-bit named :
" Internal RC oscillator 8Mhz "

danzup 25th August 2009 02:25 PM

1 Attachment(s)
pdf with the pcb for to etch your own pcb .

danzup 25th August 2009 02:44 PM

Project nr.2
 
2 Attachment(s)
2. Volume controller atmega8515 and pga2310 for volume control
I will be back with the software .

danzup 25th August 2009 02:56 PM

Projetc nr.3
 
4 Attachment(s)
3. Control and audio select with relay and r2r volume
- volume with quality MELF resistors for r2r or shunt adjusting
- infrared remote control in the stop / start amplifier
- selection from 4 sources of signal relays
- version Display with LED or LCD display as it wants ( depending on board will possible planting to serve both variants )

danzup 25th August 2009 02:59 PM

3 Attachment(s)
Some pcb ready .
http://i25.tinypic.com/25so978.jpg

danzup 25th August 2009 03:04 PM

And some pictures with another type of testing different volume controler :
http://i33.tinypic.com/2q8zyhc.jpg
http://i38.tinypic.com/i78sd1.jpg
http://i29.tinypic.com/34rzlp5.jpg

danzup 26th August 2009 04:47 AM

3 Attachment(s)
4 . This project was made by me for a friend who buy from ebay a kit like this :
http://forum.analogmetric.com/viewth...a=page%3D1
but did not work at all !
So I write the software for this kit . I post here for everyone who want to use .
Atenttion : I have remove the AT89C2051 ( look at the old schematic ) from that pcb and replace with ATTINY2313 ( look at the new slightly modified schematics) which is more modern micro controller .

danzup 26th August 2009 05:05 AM

Erratta
 
1 Attachment(s)
the correct soft for attiny2313 soft (that on precedence post do not work correct for power command)

jsn 9th September 2009 09:37 PM

Neat. I was thinking about remote controls a bit lately, and thought something like this might integrate really easily with a "lightspeed" style attenuator using LDRs controlled by the micro controller. Seems trivial to control the brightness of an LED via the voltage on a pin.

And while you are at it, you could configure each input to "remember" it's previous volume setting.

Just some ideas I wanted to share since I will probably never build my own remote controlled preamp :)

jsn

danzup 12th September 2009 07:43 AM

Quote:

Originally Posted by jsn (Post 1920005)
Neat. I was thinking about remote controls a bit lately, and thought something like this might integrate really easily with a "lightspeed" style attenuator using LDRs controlled by the micro controller. Seems trivial to control the brightness of an LED via the voltage on a pin.

And while you are at it, you could configure each input to "remember" it's previous volume setting.

Just some ideas I wanted to share since I will probably never build my own remote controlled preamp :)

jsn

Thanks for your thoughts man !
I have also tried an write soft for all variant include the not so hi-fi IC like : TDA7813 and associate.
But nothing like only resistor attenuator !


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