Arduino based LDR volume and source selection controller

[zdr]

Yes, it works like a charm! Thanks

 

[zdr]

Second build complete, driving a gainclone.

Sent from my SM-G935F using Tapatalk

 

[ronnydepony]

followed this project a long time, but I got a problem :
when I open the eagle-files I got the message : board and schematic are not consistent.

Can someone please post the good ones ?
Thanks anyway.

Regards,
Ronny

 

[zdr]

They are good ones. Relay schematics represents only one circuit, and various board versions have various number of the same circuit, depending on number of inputs.

 

[zdr]

Yes, it works like a charm! Thanks

Ahem, maybe I spoke too soon. I am getting random volume bursts on power up, without even being on mute.

 

[wineds]

Second build complete, driving a gainclone.

Sent from my SM-G935F using Tapatalk

Very nice build zdr!

 

[ozcal]

Hi guys , great work.
Just wondering if I can use the boards for input selection only and to create a ht bypass mode?
If this is not possible will some kind sold point me in the direction of a kit that can do the ht bypass thingy.
Thanks,
Gordon

 

[howarthcd]

Ahem, maybe I spoke too soon. I am getting random volume bursts on power up, without even being on mute.

This might be a different problem to the one I addressed.

Maybe the mute relays should be switched immediately following power-up until things have stabilised.

 

[zdr]

This might be a different problem to the one I addressed.

Maybe the mute relays should be switched immediately following power-up until things have stabilised.

Might be, but I haven't seen this before while the 0 volume bug was still in there...

 

[zdr]

Oh, I also have a "bump" between step 23 and 24, quite audible with white noise on.

 

[howarthcd]

Might be, but I haven't seen this before while the 0 volume bug was still in there...

In that case I'd try backing out my change and see if the latest problem goes away.

 

[howarthcd]

Oh, I also have a "bump" between step 23 and 24, quite audible with white noise on.

Is this with 25 or 50 steps?

 

[zdr]

Might be, but I haven't seen this before while the 0 volume bug was still in there...

It's there always when I play white noise. With music it's intermittent depending on the spot where the peak kicks in.

 

[zdr]

Is this with 25 or 50 steps?

50 steps now.

 

[zdr]

In that case I'd try backing out my change and see if the latest problem goes away.

Probably gone unnoticed because I never tested with white noise. Here's the simple solution:

loadIOValues();
delay(250); // wait a bit to eliminate startup volume peak


edit: ignore above, still no worky.

 

[howarthcd]

Probably gone unnoticed because I never tested with white noise. Here's the simple solution:

loadIOValues();
delay(250); // wait a bit to eliminate startup volume peak


edit: ignore above, still no worky.

What if you call setMute very early on in the loop?

 

[zdr]

What if you call setMute very early on in the loop?

Shouldn't it be quite the opposite? It's setmute that is unmuting it too early...

 

[howarthcd]

Shouldn't it be quite the opposite? It's setmute that is unmuting it too early...

Sorry, I meant with an additional call to setMute to force it to mute shortly after power up to avoid the transients whilst settling.

 

[zdr]

Sorry, I meant with an additional call to setMute to force it to mute shortly after power up to avoid the transients whilst settling.

Tried putting it in different places. no worky. But you are right, not related to original problem and it's there also with original setVolume.

 

[wineds]

Hi guys , great work.
Just wondering if I can use the boards for input selection only and to create a ht bypass mode?
If this is not possible will some kind sold point me in the direction of a kit that can do the ht bypass thingy.
Thanks,
Gordon

Hi Gordon, I have been thinking about adding a ht bypass command that simply sets the volume on one input to an arbitrary value like 20. Do you think that would do the trick ?

Cheers, Paul