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Old 25th August 2009, 02:24 PM   #1
danzup is offline danzup  Romania
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Default Yet another Volume controlers and source selections

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 "
Attached Images
File Type: gif atmega8515_motor_pot.GIF (55.1 KB, 15106 views)
File Type: jpg FP REV 9 A.JPG (95.4 KB, 14508 views)
File Type: jpg IS REV 4 A.JPG (76.5 KB, 13192 views)
File Type: jpg PSU REV B.JPG (84.5 KB, 12711 views)
Attached Files
File Type: zip lcd_m8515_v_1_5_ons.zip (15.6 KB, 1298 views)
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Old 25th August 2009, 02:25 PM   #2
danzup is offline danzup  Romania
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pdf with the pcb for to etch your own pcb .
Attached Files
File Type: zip PDF SELECTOR DANZUP.zip (32.8 KB, 1468 views)
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Old 25th August 2009, 02:44 PM   #3
danzup is offline danzup  Romania
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Default Project nr.2

2. Volume controller atmega8515 and pga2310 for volume control
I will be back with the software .
Attached Images
File Type: jpg pga2310_atmega8515.jpg (177.3 KB, 12557 views)
File Type: jpg pga2310_atmega8515_pcb.jpg (114.3 KB, 3356 views)
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Old 25th August 2009, 02:56 PM   #4
danzup is offline danzup  Romania
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Default Projetc nr.3

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 )
Attached Files
File Type: zip Schema Volume controller ver1.0_2009.zip (246.2 KB, 1770 views)
File Type: pdf sch_control & display.pdf (42.8 KB, 1537 views)
File Type: pdf sch_encoder & pushbutton.pdf (12.3 KB, 1132 views)
File Type: pdf sch_supply & relays.pdf (26.1 KB, 1210 views)
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Old 25th August 2009, 02:59 PM   #5
danzup is offline danzup  Romania
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Some pcb ready .
http://i25.tinypic.com/25so978.jpg
Attached Images
File Type: jpg rsz_1p1050539.jpg (144.9 KB, 2765 views)
File Type: jpg rsz_3p1050538.jpg (148.7 KB, 2782 views)
File Type: jpg Imag002 (Medium).jpg (38.4 KB, 3394 views)
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Old 25th August 2009, 03:04 PM   #6
danzup is offline danzup  Romania
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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
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Old 26th August 2009, 04:47 AM   #7
danzup is offline danzup  Romania
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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 .
Attached Images
File Type: jpg ctrl_attiny2313.JPG (61.1 KB, 4731 views)
File Type: gif ALPS Remote Control Schematic_old.gif (28.6 KB, 3379 views)
Attached Files
File Type: zip ATTINY2313_ALPS_1.zip (12.4 KB, 622 views)

Last edited by danzup; 26th August 2009 at 04:55 AM.
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Old 26th August 2009, 05:05 AM   #8
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Default Erratta

the correct soft for attiny2313 soft (that on precedence post do not work correct for power command)
Attached Files
File Type: zip ATTINY2313_ALPS_1.zip (12.4 KB, 770 views)
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Old 9th September 2009, 09:37 PM   #9
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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
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Old 12th September 2009, 07:43 AM   #10
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Quote:
Originally Posted by jsn View Post
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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