Remotely Controlled Motorized Volume Pot. - Page 2 - 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 5th April 2012, 09:24 PM   #11
diyAudio Member
 
Join Date: Feb 2012
Thanks for checking fotios. I realised today when i saw no crystal on the board that some hardware changes would be needed. I was about to update the thread wih my conclusin. The newer pic chip is half the price i paid many years ago.

I will start etching the board this weekend and order my parts. I will also post some pics when it is finished. I also will probably remove or omit the mute and power functions.
  Reply With Quote
Old 6th April 2012, 04:54 AM   #12
fotios is offline fotios  Greece
diyAudio Member
 
fotios's Avatar
 
Join Date: Feb 2007
Location: Δραμα - North Greece
Quote:
Originally Posted by deChrLam View Post
Thanks for checking fotios. I realised today when i saw no crystal on the board that some hardware changes would be needed. I was about to update the thread wih my conclusin. The newer pic chip is half the price i paid many years ago.

I will start etching the board this weekend and order my parts. I will also post some pics when it is finished. I also will probably remove or omit the mute and power functions.
Please keep MUTE switch on PCB. It is useful to establish communication between mcu and remote control handset. Take a look on instructions where this function is described.
Very nice alternative for P16F88 is the new P16F1827. Excellent micro with lot of new posibilities. I have some samples of it and i will do an upgrade of program code for this. I also have in process a mini remote control handset (like this in the picture) that uses the P16F1827. I will finish it in 2-3 days. P16F88 and P16F1827 are pin to pin compatible, so no changes on PCB layout.
__________________
Best Regards FOTIS ANAGNOSTOU
  Reply With Quote
Old 6th April 2012, 10:05 AM   #13
diyAudio Member
 
Join Date: Feb 2012
@fotios, thanks for the tip about the mute switch.

What kind of capacitors are:
C1, C4, C6 100nF
C2 10nF
C7 220nF

In the picture C1 is different to C4 and C6 despite them all having the same value of 100nF
  Reply With Quote
Old 6th April 2012, 11:01 AM   #14
fotios is offline fotios  Greece
diyAudio Member
 
fotios's Avatar
 
Join Date: Feb 2007
Location: Δραμα - North Greece
Quote:
Originally Posted by deChrLam View Post
@fotios, thanks for the tip about the mute switch.

What kind of capacitors are:
C1, C4, C6 100nF
C2 10nF
C7 220nF

In the picture C1 is different to C4 and C6 despite them all having the same value of 100nF
C1 is the supply decoupling capacitor of MCU and so it is the usual multilayer ceramic cap = 100nF.
C3 is electrolytic, if your AC input is greater than 12Vac please use a 470μF/35V. It has same dimensions and footprint like a 1000μF/16V.
All other capacitors are MKT type.
BTW, parts marked as LK (LK1,2,3,4,5,6,7) are just wire links.
__________________
Best Regards FOTIS ANAGNOSTOU
  Reply With Quote
Old 8th April 2012, 06:18 AM   #15
diyAudio Member
 
Join Date: Feb 2012
Hi Fotios,

One more question. I am selecting a transformer for the board and my volume control. The volume control needs a maximum of 70 mA.

I was thinking 230VAC primary, single 6VAC secondary @ 3.2VA 534mA.
My mains voltage is a very steady 230VAC

Is this size OK?

Cheers,
deChrLam
  Reply With Quote
Old 8th April 2012, 09:11 AM   #16
fotios is offline fotios  Greece
diyAudio Member
 
fotios's Avatar
 
Join Date: Feb 2007
Location: Δραμα - North Greece
Quote:
Originally Posted by deChrLam View Post
Hi Fotios,

One more question. I am selecting a transformer for the board and my volume control. The volume control needs a maximum of 70 mA.

I was thinking 230VAC primary, single 6VAC secondary @ 3.2VA 534mA.
My mains voltage is a very steady 230VAC

Is this size OK?

Cheers,
deChrLam
Yes, a 6VAC/534mA transformer is just fine. I use the same size.
Go ahead!
I wish you success.
__________________
Best Regards FOTIS ANAGNOSTOU
  Reply With Quote
Old 25th August 2012, 06:43 AM   #17
diyAudio Member
 
Join Date: Feb 2012
I got a remote control Philips RC 19420002-01 on yaBe for 1 Euro and it works just great. This remote has a different header to the TV codes and as expected does not interfere with my Philips TV.

This project was fun and painful at the same time. Next time around I think I will just buy the boards from fotios. The price is good and the concept is solid and professional.

Next step for me is to get the mute working with my existing soft start and speaker protection modules from here: AudioCreativ - High-End Kombimodul: Lautsprecherschutzschaltung + Softstart

I have a circuit diagram from the designer, but I cannot publish it here.

All the best
Attached Images
File Type: jpg Philips RC 19420002-01.jpg (22.1 KB, 271 views)
  Reply With Quote
Old 29th August 2012, 04:59 PM   #18
Bare is offline Bare  Canada
diyAudio Member
 
Join Date: Dec 2001
Location: vancouver
Nice Achievement.
However I have that Same Alps pot w bigger motor though and a slightly more sophisticated Setup OEM on My Main amp, Selector switches are motorized as well
Frankly I don't use it. Because it's just.. another... stupid remote to deal with.
All for the sake of not getting up out of one's Chair ??
  Reply With Quote
Old 30th August 2012, 11:35 AM   #19
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Bring the Pre-Amp to the listening seat.
Then full analogue control of all the signals sent to the Power Amplifiers/s
__________________
regards Andrew T.
  Reply With Quote
Old 30th August 2012, 04:28 PM   #20
fotios is offline fotios  Greece
diyAudio Member
 
fotios's Avatar
 
Join Date: Feb 2007
Location: Δραμα - North Greece
Quote:
Originally Posted by AndrewT View Post
Bring the Pre-Amp to the listening seat.
Then full analogue control of all the signals sent to the Power Amplifiers/s
This is a wonderful idea! You can sit in your arm chair keeping hug your beloved preamplifier!
__________________
Best Regards FOTIS ANAGNOSTOU
  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
SIMPLE remote volume control with alps motorized pot ChopperCharles Tubes / Valves 22 7th October 2014 03:36 AM
Slowing Adcom motorized volume pot bcmink Digital Source 1 17th January 2010 11:48 AM
Alps RK27112 10K Motorized Blue Velvet Volume Pot raghoser Parts 4 28th January 2008 02:24 PM
I need the infrared remote control schematic for motor controlled volume pot noyan Parts 4 24th July 2007 03:05 PM
FS: Remote volume control w/motorized pot theAnonymous1 Swap Meet 2 28th June 2006 11:38 PM


New To Site? Need Help?

All times are GMT. The time now is 02:44 PM.


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