GB for R2R audio volume / input selection pcb

[danzup]

Hi Tvicol, I recommentd 8bits or more relays uses in the volume control, for the reason that 6bits is really not enough for a suitable attenuation.
You can get 48dB attenuation with 8bits relays
also, 36dB only in 6bits
regards
Lu

It is not really r2r , we call it so because the schematics is identically , but the values of resistors are like this :
-1dB -2dB -4dB -8dB -16dB -32dB
6 bit = total attenuation -63dB

Now do you understand ?

 

[iTiberius]

Webshop is open.

vicol audio : webshop

Please do not forget to add shipping.
If no shipping is added we´ll use normal postage.

Regards,
Tibi

 

[iTiberius]

Schematic attached.

Regards,
Tibi

 

[dsdjoy]

Relay board for balanced setup

Webshop is open.

You offer a complete set/kit of boards.
How can I order a separate relay boards for balanced setup ?

 

[iTiberius]

Webshop is closed.
Thank you for your interest in this product !
We'll let you know when a new set of boards will be available.

Regards,
Tibi

 

[400]

Oh!
A little to late.....!

Waiting for the next charge.
Marcel

 

[iTiberius]

Seems that the interest expressed on forum is not always reflected in reality, so our pre-ordered 30 boards have been quickly sold out.

Schematic is available here as well.
http://vicol-audio.ro/img/volume-controller/VC_R2R&Shunt_2010.pdf

Those who want to DIY from the a to z this product, may found all documentation and info at vicol audio : r-2r volume controller

Regards,
Tibi

 

[Luke]

hmmm too late, been thinking about one of these. Do you plan to do another run?

 

[iTiberius]

hmmm too late, been thinking about one of these. Do you plan to do another run?

As soon we´ll finish to deliver all boards for this GB, will think to run another one, maybe with boards fully mounted and tested. A finished product.
Time to deliver will be a little longer, but the wait will worth as we´ll choose high quality components like vishay melf resistors, genuine Rubycon ZL/ZA caps and Takamisawa relays.
Anyhow you will still have the option to buy only the board with atmel programmed.

Regards,
Tibi

 

[Luke]

As soon we´ll finish to deliver all boards for this GB, will think to run another one, maybe with boards fully mounted and tested. A finished product.
Time to deliver will be a little longer, but the wait will worth as we´ll choose high quality components like vishay melf resistors, genuine Rubycon ZL/ZA caps and Takamisawa relays.
Anyhow you will still have the option to buy only the board with atmel programmed.

Regards,
Tibi

nice.

 

[Jempie]

Tibi,

can i use the LED and the LCD on the same time?

 

[jkraxi]

Tibi,
can i use the LED and the LCD on the same time?

Not in the same time, but you can choose one of this option. Also there are differences regarding firmware used.

 

[Jempie]

Jkraxi,

i can alway change the firmware, could you inform me
the latest firmware for both.

regards,

 

[iTiberius]

Jkraxi,

i can alway change the firmware, could you inform me
the latest firmware for both.

regards,

Jempie,

Latest firmware is available for download from vicol-audio.ro website.
vicol audio : r-2r volume controller

For LED http://www.vicol-audio.ro/img/volume-controller/ATM16_SHUNT_R_2R_LED.zip

For LCD http://www.vicol-audio.ro/img/volume-controller/ATM16_SHUNT_R_2R_LCD_V1.zip

Regards,
Tibi

 

[TBKK]

hi tvicol,

i have bought the boards from you but they all program for LCD, now one friend
wants to use the LED configuration. I received also the schematic with the 6 pin
but i need to know what to do exactly to pre program the chip. I have the follow;

GTP-Plus programmer for USB.
must i connect the programmer to the board, and must i also connect the powersupply
of the board. or not

please tell me what to do?

 

[danzup]

hi tvicol,

i have bought the boards from you but they all program for LCD, now one friend
wants to use the LED configuration. I received also the schematic with the 6 pin
but i need to know what to do exactly to pre program the chip. I have the follow;

GTP-Plus programmer for USB. View attachment 177257
must i connect the programmer to the board, and must i also connect the powersupply
of the board. or not

please tell me what to do?

That programmer is only for PIC and NOT for Atmel AVR !!! It will not work !
Programming with a compatible ISP for AVR is simple : with the target power on you connect the 6 signals to programmer and write the firmware .
A little google will show you a lot of compatible programmer interfaces and how to do this .

 

[TBKK]

hi danzup,

I have program Atmel with this programmer combine with WINPIC800
they even have the Atmel 8515 to select. I found this schematic
this will work so the board must be connect to power.

Regards,
TBKK

 

[TBKK]

Tvicol,

Help
am assembly the board, order everything by TME very good and quick delivery
i have BCX56-16 according to the BOM list but the housing is to small look at the
picture, any suggestion for this problem.

TBKK

 

[danzup]

hi danzup,
I found this schematic
this will work so the board must be connect to power.

Regards,
TBKK

If that interface can program Atmel AVR then it is ok !
You must connect following pins for atmel : MISO ,MOSI , CLK, RESET , +5V , GND from the programmer to corresponded Atmel pins


Yes ! This is the good interface . The board must have power as the programmer is powered from board . Use Bascom AVR to programm .
download for free from here : Downloads - MCS Electronics

 

[danzup]

Tvicol,

Help
am assembly the board, order everything by TME very good and quick delivery
i have BCX56-16 according to the BOM list but the housing is to small look at the
picture, any suggestion for this problem.

TBKK

Sorry !!!
BOM list wrong ! I have forgot to update BOM list !
I will be back with the correct code for transistor .
Sorry again.