My RF controled PGA2320 MiniVol and ch selector - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 21st January 2010, 09:36 AM   #1
diyAudio Member
Join Date: Oct 2007
Default My RF controled PGA2320 MiniVol and ch selector

I got a lovely MiniVol board with the PGA2320 chip driven by a AVR microcontroller from diyaudio member, theAnonymous1. The minivol provides vol up/down and mute, controlled by push switches or a rotary encoder.
The MiniVol is described here -

I also wanted a channel selector. So I rigged up a small
circuit around a CD4017 to step through the channels.
The DPDT relays are driven via 2N2222s.

To control everything, I got a cheap 4 Channel RF controlled switch on ebay. The receiver has a couple of
jumpers to choose the mode - toggle, latch or momentary.
I used the momentary mode. The 4 channels are used
for Vol Up, Vol Down, Mute and Channel select.
The open RF receiver/relay board, and the remote alongside are visible in one of the pics.

The PGA2320 is a really nice volume control chip, sweet
and transparent.
I wanted an appropriate box, so I put
the whole thing in a Ferrero Rocher chocolate box!

I am also attaching the Eagle files for the channel select circuit.
Attached Images
File Type: jpg pre-6.jpg (176.8 KB, 1317 views)
File Type: jpg pre-7.jpg (148.6 KB, 731 views)
File Type: jpg pre-3.jpg (69.5 KB, 720 views)
File Type: jpg pre-2.jpg (244.1 KB, 718 views)
Attached Files
File Type: zip (39.6 KB, 169 views)

Last edited by quadtech; 21st January 2010 at 09:39 AM.
  Reply With Quote
Old 8th February 2011, 06:11 PM   #2
diyAudio Member
linuxworks's Avatar
Join Date: Jul 2008
Location: Santa Clara, CA
a chocolate attenuator

I've used those ebay rf remotes before (I designed a camera shutter/focus remote based on those rf modules). they are pretty cool and easy to interface with.

for the relays - if you can get away with you - you can use ssr chips and have those trigger some other thing. the RF receiver modules are 5v based, I think, and so you add a small series R and go into an SSR chip, then use the 'contacts' pins to control the relays. it might make it a little quieter in operation and simplify things. you can also get the rf receivers without the relays onboard and have a smaller package.
My Photostream:
  Reply With Quote


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
PGA2310 vs. PGA2320 error401 Chip Amps 3 29th December 2011 08:51 AM
IC: MiniVol PGA23xx control board error401 Group Buys 6 20th March 2008 04:56 PM
Temp Variations CH to CH Zero Cool Everything Else 0 4th February 2007 01:25 PM
PGA2320: anyone? AudioWizard Parts 2 20th July 2005 03:39 PM
bridge a 4 ch amp into 3 ch? batonrye Car Audio 8 17th August 2004 10:37 PM

New To Site? Need Help?

All times are GMT. The time now is 01:10 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2