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Old 22nd November 2009, 10:02 PM   #31
joemana is offline joemana  United States
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Danzup,

Since I have no idea on which of this controler to pick, which one do you recommend if I want the best of your design? My needs is the one that can be used with universal remote, display and four inputs?
Since you have the r/2r kit, how much is the complete kit including shipping to U.S ? Where can I find the details of r/2r?

Thanks,

Joe
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Old 23rd November 2009, 12:01 PM   #32
danzup is offline danzup  Romania
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Quote:
Originally Posted by joemana View Post
Danzup,
Since I have no idea on which of this controler to pick, which one do you recommend if I want the best of your design? My needs is the one that can be used with universal remote, display and four inputs?
Since you have the r/2r kit, how much is the complete kit including shipping to U.S ? Where can I find the details of r/2r?
Thanks,
Joe
On the first page project nr.3 :
Yet another Volume controlers and source selections
( price for : kit r/2r atmega16 / 4 input without transport to USA is 53 euro , please any other info in pm )
But if you do not like the fade and discrete mechanical sound of relay (this do not propagate to speakers ! ) this is not for you !
In path of audio signal there are only at max attenuation 6resitors and have the most transparent sound of a passive preamplifier .
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Old 26th November 2009, 06:09 AM   #33
voxac30 is offline voxac30  Slovenia
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Hi!

I,m building tube preamp FVP (Allen Wright) with 4 CCa Telefunken
tubes .I have Alps motor poti with controler ,but will also remote
sources.So I m intersted on your kit ,or only programed IC .I ,m
only analog guy and have no skills in digital el.I have some questions
1: is posible to progam 30 -40 sec delay function ( tube warm up)to operate relay for B+
2: analog to that function output mute -when B+ for tube is on
output is on -gnd on output is enabled.
3: duo led aded for status -warm up -red ,operate -blue

What is price for kit with that functions?

Thanks
voxac30
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Old 26th November 2009, 09:12 AM   #34
danzup is offline danzup  Romania
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Quote:
Originally Posted by voxac30 View Post
Hi!

I,m building tube preamp FVP (Allen Wright) with 4 CCa Telefunken
tubes .I have Alps motor poti with controler ,but will also remote
sources.So I m intersted on your kit ,or only programed IC .I ,m
only analog guy and have no skills in digital el.I have some questions
1: is posible to progam 30 -40 sec delay function ( tube warm up)to operate relay for B+
2: analog to that function output mute -when B+ for tube is on
output is on -gnd on output is enabled.
3: duo led aded for status -warm up -red ,operate -blue

What is price for kit with that functions?

Thanks
voxac30
Yes all of your idea are possible and already implemented in one of my tube amplifier !
On LCD it will appear : " Warming up tube !" U anodic is off and mute is on , and after 60 seconds it will say " Ready !" in this time mute will stay active and only after U anodic is connected the mute relay will be released .
If you do not want to use a LCD please tell and I will provide schematics for led only on front panel .
An atmel AVR programmed with firmware will cost you without transport 5 euro .
For kit : I have an kit with pcb etched on-house using toner transfer technique with 6 input to select , cost without transport : 50 euro (schematics and pcb posted here on first page
1. Volume controller / source selector for motor potentiometer ( like Alps blue velvet ) : )
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Last edited by danzup; 26th November 2009 at 09:23 AM.
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Old 26th November 2009, 01:35 PM   #35
voxac30 is offline voxac30  Slovenia
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Hi !

Thanks for answer .I send you private mail for buy controler.
voxac30
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Old 2nd December 2009, 01:52 PM   #36
danzup is offline danzup  Romania
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Quote:
Originally Posted by danzup View Post
3. Control and audio source selection 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
- display with 16 x 2 or 20x2 LCD
- switch and encoder for selections
Firmware for this project (the .bin and .hex files ready for programming the atmega16) .
You must also write 2 fusebits in atmega16 :
- Jtag disable
- Internal 8Mhz RC oscillator
Attached Files
File Type: zip ATM16_SHUNT_R_2R_LCD_V1.zip (18.8 KB, 388 views)
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Last edited by danzup; 2nd December 2009 at 01:58 PM.
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Old 2nd December 2009, 05:28 PM   #37
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Hi
I soldered volume control with M8515 & PGA2310.
THNX Danzup
Attached Images
File Type: jpg Bottom.jpg (403.7 KB, 2675 views)
File Type: jpg PGA2310.JPG (78.4 KB, 2542 views)
File Type: jpg Top.jpg (360.9 KB, 2496 views)
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Old 3rd December 2009, 08:28 AM   #38
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Hi
Last weekend I soldered RC5 controled passive preamp with danzup source code from

Yet another Volume controlers and source selections

and with schematic from

http://www.diyaudio.com/forums/attac...attiny2313.jpg

I used 2xATtiny2313 and changed source code for both.
One of ATtiny2313 uses for amplifire switching on/off and basscontrol.
Other ATtiny2313 uses only for treble control. It turns on when amplifire is on.
Attached Images
File Type: jpg Bottom.JPG (738.8 KB, 2372 views)
File Type: jpg Top1.JPG (812.4 KB, 2186 views)
File Type: jpg Top.JPG (482.1 KB, 724 views)
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Old 3rd December 2009, 08:30 AM   #39
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Default RC5 controled passive preamp schematic

Schematic for RC5 controled passive preamp
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File Type: jpg Tembr.jpg (345.4 KB, 1235 views)
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Old 3rd December 2009, 10:45 AM   #40
danzup is offline danzup  Romania
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Quote:
Originally Posted by Pryanick View Post
Schematic for RC5 controled passive preamp

Congratulation !
And Pryanick : I like those MLT resistors , give so sweet sound !

I will post some time soft and schematics with one atmega16 with r/2r 6 relay for volume and 7 relay for bass and 7 relay for treble controller (exactly like your but extended for 7 relay each tone control : bass and treble for 0dB in the middle and -5dB, -10dB ,-15dB and +5dB , +10dB , +15dB on both ).
It was made by me in year 2007 but never posted ....
here the schematics :
http://i31.tinypic.com/necfb5.jpg
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Last edited by danzup; 3rd December 2009 at 10:59 AM.
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