My TDA7294 Functioning!! Now choosing Selector... - diyAudio
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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) So now, anyone here has experienced using PIC to control the amplifier?? OR any web links that explaining more about controling amplifier using PIC.. 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.... This may be NEW idea for DIYing your amplifier.. Thanks for helping...
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Old 9th April 2011, 11:42 AM   #2
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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