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Chip Amps Amplifiers based on integrated circuits

My TDA7294 Functioning!! Now choosing Selector...
My TDA7294 Functioning!! Now choosing Selector...
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Old 8th February 2011, 10:20 AM   #1
Hakimi is offline Hakimi  Malaysia
diyAudio Member
Join Date: Nov 2010
Thumbs up My TDA7294 Functioning!! Now choosing Selector...

Hi everyone... I'm now working my intergrated audio system (PC in/MP3 player in/iPod Dock in/Fm Radio in) now i'm thinking rather than using normal rotary type of selector switch, why i'm not trying to use PIC + LCD screen as selector switch? Now here's plan there are 4 button and relay. 1 -FM Radio 2 -PC in 3 -iPod Dock 4 -MP3 player there also 1 16X2 LCD + PIC When button 'fm radio' pressed relay 1 toggled where the input radio goes to output- LCD displyed (FM RADIO) When button 'pc In' pressed relay 2 toggled where the input pc in goes to output- LCD displayed (PC in) When button 'ipod' pressed relay 3 toggled where the input ipod dock goes to output- LCD displayed (iPod Dock) When button 'MP3' pressed relay 4 toggled where the input mp3 in goes to output- LCD displayed (MP3 Player) from the output > as usual > pre-amp and POwer amp (TDA 7294)http://www.diyaudio.com/forums/image...es/biggrin.gif So now, anyone here has experienced using PIC to control the amplifier?? OR any web links that explaining more about controling amplifier using PIC.. http://www.diyaudio.com/forums/image...s/confused.gif then my NEXT idea is controling pre-amplifier using PIC (VOL/BASS/TREBEL) then if working well the next step is interfacing the PIC to IR remote to control the whole system....http://www.diyaudio.com/forums/image...s/rolleyes.gif This may be NEW idea for DIYing your amplifier.. Thanks for helping...
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Old 9th April 2011, 11:42 AM   #2
ramuji is offline ramuji
diyAudio Member
Join Date: Aug 2009
its an old idea. and there are number of diy project using this very scheme, hope you know how to use search engines!
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