Yet another Volume controlers and source selections

[iTiberius]

Yes, it's log and you may calculate different kinds of input impedances and resistor values, however step size is limited by relay numbers to 1dB/step.
Please note that our volume controller is designed with constant output impedance.

Regards,
Tibi

 

[Morde]

Yes, it's log and you may calculate different kinds of input impedances and resistor values, however step size is limited by relay numbers to 1dB/step.
Please note that our volume controller is designed with constant output impedance.

Regards,
Tibi

Thanks Tibi for your quick answer. Now I managed to find the discussions that have taken place in this thread. I just had misspelled the word "logarithmic".

 

[chz]

Hello!
Ready ATMEGA 8515 Procion the preamplifier, which was presented at the first page. PHILIPS RC5 remote actuated, all functions twice a touch away. Did you see this problem? What could be the solution to it? Please, who knows sgítsen of improvement.

 

[FarmTech]

Hello!
Ready ATMEGA 8515 Procion the preamplifier, which was presented at the first page. PHILIPS RC5 remote actuated, all functions twice a touch away. Did you see this problem? What could be the solution to it? Please, who knows sgítsen of improvement.

hi, did you fix the rc5 problem ?

 

[chz]

We managed to solve it works fine. RC5 code remained, more features were added.

 

[chz]

Modified HEX

 

[hsj21]

Yes.

Hi, is it possible to use the ULN2003 IC instead of the relay to drive the transistors in the circuit?,

 

[iTiberius]

Hi, is it possible to use the ULN2003 IC instead of the relay to drive the transistors in the circuit?,

ULN2003A is an array of seven npn darlington transistors. You may use this to drive relays directly and gain some PCB space and maybe reduce cost. However, you still need a microcontoller to drive ULN2003A. It is nonsense to use ULN2003A to drive transistors.

Regards,
Tibi

 

[biturbo420]

We managed to solve it works fine. RC5 code remained, more features were added.

hi, how did you learn remote controller?

 

[chz]

hi, how did you learn remote controller?

Program has been modified, inputs can be controlled by 1-6 buttons.

 

[file1]

Hi everyone,

is there any info about setting fuse bits and other relevant data for Atmel programming?

Thanks,

 

[iTiberius]

Schematic, bill of materials, gerber files, firmware, Bascom source code and entire documentation is now available for download at vicol audio : r-2r volume controller

Enjoy !

Regards,
Tibi

 

[file1]

Hello, indeed that is great news. I already got some pcb's . The pcb's are blue , with double copper and immersion silver coated. I have few pcb's for sell if anyone is interested.

 

[iTiberius]

Look nice !
Please remove vicol-audio if you intend to sell them. Scratch or use some black paint, permanent marker.

Regards,
Tibi

 

[danzup]

Hi everyone,

is there any info about setting fuse bits and other relevant data for Atmel programming?

Thanks,

In Bascom set 2 fusebit:
- Internal RC clock 8 Mhz
- disable jtag

 

[mos]

Hello! Since vicol-audio page is down, I am wondering...is there anybody willing to post the gerbers and the other files needed to build this volume controller?
Thank you!

 

[Sleepwalker65]

Hello Danzup and everyone else, I want to build a similar project but using Arduino (probably Nano) with latching relays, shaft encoder and stepping volume control (r2r probably). An e-ink display would be nice too.

Could you suggest an existing project thread on DIYAUDIO, or better yet, are you interested in porting your software to Arduino?

Thanks for all the inspiration and design work that you have shared!

 

[danzup]

Hello! Since vicol-audio page is down, I am wondering...is there anybody willing to post the gerbers and the other files needed to build this volume controller?
Thank you!

Please see this :
vicol audio : r-2r volume controller

 

[danzup]

Hello Danzup and everyone else, I want to build a similar project but using Arduino (probably Nano) with latching relays, shaft encoder and stepping volume control (r2r probably). An e-ink display would be nice too.

Could you suggest an existing project thread on DIYAUDIO, or better yet, are you interested in porting your software to Arduino?

Thanks for all the inspiration and design work that you have shared!

I will show/post how to use Nano with the relay board r2r and software that is needed for this but will take some time as now I am very busy on my actual job.

 

[viki_v2]

Hi Danzup
I will be getting pcbs fabricated for R-2R / SHUNT VOLUME CONTROLLER with 4 selectable sources.

I will need some guidance soldering chips and smd parts.
Also I have no experience in programming, this will be first time-So pls guide how exactly should i proceed.