Yet another Volume controlers and source selections - Page 19 - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th April 2010, 12:20 PM   #181
danzup is offline danzup  Romania
diyAudio Member
 
danzup's Avatar
 
Join Date: Oct 2007
Location: Bucuresti
Quote:
Originally Posted by coolnose View Post
Danzup,

thanks for the answer.

But I do understand that bigger displays will (physically) not fit the PCB without modifying. Could you kindly confirm ?

Cheers,

Max
There is no need to fit in size if the interface connector is the same !
( no problems if the LCD is bigger if the connector fits well on pcb )
__________________
There are not better tube than 6P3S and 6N2P for my ears !
  Reply With Quote
Old 13th May 2010, 02:28 AM   #182
diyAudio Member
 
Join Date: Jul 2009
project nr.3 looks like just what I've been looking for!

I'm new to all this so I have some questions, anyone can help I would greatly appriciate it.

I plan on using it as a passive pre-amp for some chipamp.com gainclones, would it be suitable as is or would it need any modification?

If i did need to mod it do I just need to change the firmware on the atmega chip? I think I have a few atmega16's and a parallel port programmer from wii project so that would be handy

Surface mount scares me a little as I've only ever done through hole but etching my own boards doesn't as I know I can get help with that. Is it better for me to make my own or are there through hole pcbs available? I'm happy to buy kits, I just don't trust my surface mount ability.

Thanks for sharing these designs with the community!
  Reply With Quote
Old 13th May 2010, 04:17 AM   #183
danzup is offline danzup  Romania
diyAudio Member
 
danzup's Avatar
 
Join Date: Oct 2007
Location: Bucuresti
Quote:
Originally Posted by sparehead1 View Post
project nr.3 looks like just what I've been looking for!

I'm new to all this so I have some questions, anyone can help I would greatly appriciate it.

I plan on using it as a passive pre-amp for some chipamp.com gainclones, would it be suitable as is or would it need any modification?

If i did need to mod it do I just need to change the firmware on the atmega chip? I think I have a few atmega16's and a parallel port programmer from wii project so that would be handy

Surface mount scares me a little as I've only ever done through hole but etching my own boards doesn't as I know I can get help with that. Is it better for me to make my own or are there through hole pcbs available? I'm happy to buy kits, I just don't trust my surface mount ability.

Thanks for sharing these designs with the community!
That project do not need modifying for gainclones.
You can make your own through hole pcb as the schematics is there .
If you want some changes in firmware , based on my free time I will try to do the changes . The parallel port programmer is perfect !
Here some pcb with r-2r project made as through hole with some bigrelay and big pcb : Picasa Web Albums - suzuki-san - atenuator
I made this for a user that have a tube amplifier and that user want only the volume part . That is for your inspiration .
__________________
There are not better tube than 6P3S and 6N2P for my ears !
  Reply With Quote
Old 14th May 2010, 02:02 AM   #184
diyAudio Member
 
Join Date: Mar 2007
Location: Bandung
@ sparehead1 :
This Solder side and component side you ask.

Didiet
Attached Files
File Type: pdf PCB Volume.pdf (118.8 KB, 547 views)
File Type: pdf Comp - Volume.pdf (92.6 KB, 467 views)
  Reply With Quote
Old 14th May 2010, 03:07 AM   #185
diyAudio Member
 
Join Date: Jul 2009
Quote:
Originally Posted by didiet78 View Post
@ sparehead1 :
This Solder side and component side you ask.

Didiet
Thank you didiet7, that will help me a lot
  Reply With Quote
Old 14th May 2010, 07:41 AM   #186
danzup is offline danzup  Romania
diyAudio Member
 
danzup's Avatar
 
Join Date: Oct 2007
Location: Bucuresti
Quote:
Originally Posted by didiet78 View Post
@ sparehead1 :
This Solder side and component side you ask.

Didiet
Congratulation my friend !
That are good looking PCB !
__________________
There are not better tube than 6P3S and 6N2P for my ears !
  Reply With Quote
Old 16th May 2010, 04:28 PM   #187
diyAudio Member
 
Join Date: Aug 2009
Location: Smederevo, Serbia
@Danzup
I've built volume controller in January (page 9 of this thread). I had some problems because it was my first microcontroller project, but when I fixed all my mistakes, now it works perfectly, like Swiss clock.
I have only one problem. When I sit in my chair to listen to the music, I'm far away from preamp, so I can't see clearly volume setting, numbers are small or my eyes are weak, it doesn't matter. If I used LED display, I could have bigger numbers, but LCD is more "fancy".
Now I have an idea, but I don't know to realize it, so I need your help.
Instead of 2x16 LCD display, I want to use 4x20. All text will be displayed at upper two lines. Bottom two lines will be bar grafic display. Each 7x5 matrix will be one bar, so if I use 16 bars in each of two lines (it's more simple than to use all 20), I'll have 32 bars for 64 volume positions. Each odd or even volume position will add one bar more. I think it will improve this project and will be more attractive for other builders.
Is it possible to realize? Is it simple? Are there enough place in memory?
You must answer these questions. If you have time to write program, I'll be very happy and thankful.
  Reply With Quote
Old 17th May 2010, 01:52 AM   #188
diyAudio Member
 
Join Date: Mar 2007
Location: Bandung
@Dobrivoje : what about using VFD instead of LCD?You can still use 16x2
  Reply With Quote
Old 17th May 2010, 03:11 AM   #189
danzup is offline danzup  Romania
diyAudio Member
 
danzup's Avatar
 
Join Date: Oct 2007
Location: Bucuresti
Quote:
Originally Posted by dobrivoje View Post
@Danzup
I've built volume controller in January (page 9 of this thread). I had some problems because it was my first microcontroller project, but when I fixed all my mistakes, now it works perfectly, like Swiss clock.
I have only one problem. When I sit in my chair to listen to the music, I'm far away from preamp, so I can't see clearly volume setting, numbers are small or my eyes are weak, it doesn't matter. If I used LED display, I could have bigger numbers, but LCD is more "fancy".
Now I have an idea, but I don't know to realize it, so I need your help.
Instead of 2x16 LCD display, I want to use 4x20. All text will be displayed at upper two lines. Bottom two lines will be bar grafic display. Each 7x5 matrix will be one bar, so if I use 16 bars in each of two lines (it's more simple than to use all 20), I'll have 32 bars for 64 volume positions. Each odd or even volume position will add one bar more. I think it will improve this project and will be more attractive for other builders.
Is it possible to realize? Is it simple? Are there enough place in memory?
You must answer these questions. If you have time to write program, I'll be very happy and thankful.
This have been done in another personal project made by me and posted in the romanian forum as you see in the attached picture . So only need is my free time to add this for that project .
Also a VFD work perfectly in place of LCD , as this is something i have successfully tried already .
Attached Images
File Type: jpg LCD_tda.jpg (135.7 KB, 962 views)
__________________
There are not better tube than 6P3S and 6N2P for my ears !
  Reply With Quote
Old 17th May 2010, 10:24 AM   #190
evansp is offline evansp  United Kingdom
diyAudio Member
 
Join Date: Apr 2009
Default Delivery and Supply costs

I would like to purchase pcb's and pre programmed controller etc what are supply status and costs please (to UK)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
source selector / volume hum in Aikido cbutterworth Tubes / Valves 1 28th March 2007 07:34 AM
Source for volume knobs? Alois Pass Labs 4 3rd July 2005 05:12 PM
IC Controlers for Class D Power stage frozenpod1 Class D 14 17th May 2005 03:25 PM
Swichable source and volume pot. Whats the best way? sounder Chip Amps 2 22nd September 2003 06:29 PM
detented volume pots... source? Mach_Y Parts 2 1st June 2003 05:23 PM


New To Site? Need Help?

All times are GMT. The time now is 07:39 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2