[PROJECT] Digitial Volume/Power Control Board

[col]

yes, Iv'e read the entire thread. I know that the volume control is IR, I'm obviously not requesting that as a feature, more the option to be able to trigger relays or something to turn off more than one piece of equipment. Usually, when I shut down my system I have to turn the amps off first and then all the signal processing stuff. Would be very cool to have a means to be able to hit one button and that sequence to take place.

cheers,
col.

 

[Andreq]

I'll look into it.

I don't see why it would be possible to plug 2 or more "Relay module" on 1 µC IO.

If this particular IO control power, than every connected module would power on/off according to it.

 

[col]

So I would just need to put a start up module (client) in each bit of equipment then program the server module to get the sequence right? That sounds great! At the moment turning on the HiFi is a bit like the start up sequence for the space shuttle

col.

 

[Andreq]

Kinda,

but the "relay module" will only use 1 IO pin with 5v and gnd... if everything goes well, you should be able to plug 1,2 or 3 module on the same IO pin/5v & gnd connector and they will all work at the same time.

 

[col]

here is a photo of the insides of my preamp.

http://pix.minirig.org.au/main.php?g2_itemId=1150

It's basically a bunch of modules from ESP. I'm using a ESP P05b power supply that has a unregulated AUX voltage of around 20v I could use that with a LM7805 to power it.

http://sound.westhost.com/project05b.htm

col.

 

[Andreq]

Upates :

I made a little (big) mistake on the volume control module!

After reading the data sheet a little bit more, I found that pin 11 (agnd) stand for Analog Ground, and not... address gnd.. which it why I tied it to gnd...

I've managed to isolate the problem on my already made pcb. I'll do some more testing using this board. I might need to add a "Wheatstone Bridge" (4 resistor x 2 channel).

Next time I'll take time to read everything -_-

Anyway I'll be able to save this little PCB.

I've attached the revised PCB