Yet another Volume controlers and source selections

[joemana]

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

[danzup]

Originally Posted by joemana

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 .

[voxac30]

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

[danzup]

Originally Posted by voxac30

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 ) : )

[voxac30]

Hi !

Thanks for answer .I send you private mail for buy controler.
voxac30

[danzup]

Originally Posted by danzup

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

[Pryanick]

Hi
I soldered volume control with M8515 & PGA2310.
THNX Danzup

[Pryanick]

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.

[Pryanick]

Schematic for RC5 controled passive preamp

[danzup]

Originally Posted by Pryanick

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