PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD

[zenmastering]

Hi Igor,

Thanks for the very quick and clear suggestion. I changed R12 and R14 to 1K and so far (10 power up/down cycles) the encoder and general operation are flawless. I'll continue to test it tomorrow, but I think this has fixed the encoder issue!

Your help is much appreciated!

Graemme

 

[Igor]

GREAT!!! Tell us about sound when connected to speakers.

Encoder issue:
That's was strange, never had this before.
I bought 100 microcontrollers from local Microchip distributer, at least 10 were OK,
this is the second PIC from from this batch which has same issue with encoder port.
OK... We have a fix, in case of whatever

EDIT: I "burned-in" another 18 microcontrollers and tested in circuit.
One had same issue as yours. Will check every microcontroller before sending.

 

[zenmastering]

Hi Igor,

The sound? What sound? It has so little sound of it's own that I love it...and I'm used to very high-end monitoring here (EMM Labs DAC, Bel Canto amps and Revel monitors).

This is just great...Thanks Igor!

Now having said that, I still have one problem with the operation: Even if I follow Igor's instructions exactly, with respect to using the TRIM button to store a default setup, the unit will power up in some odd state and be unresponsive until I press another input switch. It's almost like the unit 'forgets' the setup that I've loaded and instead loads this incorrect data that 'freezes' the unit until I switch inputs.

Any thoughts?


Graemme

p.s. I've now run about 30 power up/down cycles and the encoder problem is definitely fixed.

 

[Igor]

Please pass setup procedure (to reset the microcontroller):
http://www.groupdiy.com/index.php?topic=30914.msg510069#msg510069
and store trims and initial state.

BTW, we replaced today control room section in DB for 3 of these kits, bit adapted to 5.1.

What can I say.... 6000G control room section sucks, now the sound is like somebody removed a blanket from the loudspeakers.
Will post some pics soon.

 

[Igor]

Yep.... Check here:
http://www.groupdiy.com/index.php?topic=43120.0

Some nice porn - photos are in photo album:
http://s251.photobucket.com/albums/gg291/diy33609/NEW_CRM_DB/

 

[tomcat]

Nice Igor!

The button on the right lower side "Sub" is for the subwoofer switch here?

Possible to mod your normal CRM for 3-speaker + Sub like this? Would love to scrap Talkback for this feature

 

[Igor]

Ohho.... I cannot give a support each time you change or modify something, but can post
all possible features of controller chip and full table of A6833 outputs.

"Custom mods" support is f@ng time consumer;
Please mind, every time you modify something, you do it on your own rescue.

Well... if there is interest, have to find some time and write a loooooong post about all these features

 

[Siegfried Meier]

Hey guys,

Just got one of Igor's PSU's for the CRM project here.  I'm unsure of how to hook this up to mains.  One side has 4 pins, the other has 2 and a ground on the edge of the PCB.  I'm assuming I use the side with 2 pins, and 1 is hot and one is neutral, with IEC ground to the PCB?

Any info would be greatly appreciated, I'd like to get this thing done.

Thanks,
Sig

 

[Siegfried Meier]

Anyone?

 

[Siegfried Meier]

Did anyone get one of these PSU's or am I the only one...?

If there's a way I can test this, someone please let me know.  I've never played around with these computer switching type PSU's so I have no clue...

Thanks!
Sig

 

[bluesbaz]

I've been using my monitor controller for about 2 weeks now. Unfortunately this weekend a strange thing happened. While switching through the inputs I must now pres the second button fallowed by the 3rd and the second again in order to select the second input. Until I run press the buttions in that order the interface freezes. Should I go through the reset procedure or look elsewhere?
Everything else is working fine. What a great project Igor. I really appreciate being able to make an upgrade of this quality to my studio.
-s

 

[bluesbaz]

Well I went through the reset procedure and no change.
-s

 

[bluesbaz]

Igor?
-s

 

[Siegfried Meier]

OK, so it seems my unit is working, but I have no LED's active...

The main LED screen shows stuff, but I'm unsure of how to properly set this thing up.  Are there instructions anywhere?  I have all the stuff that Igor sent me, but there are no instructions on setup, and I've been through this thread a few times...at least I didn't notice anything written here?

I did the "hold trim" on startup thing, and now it just says CUT, no clue what that means or what I'm to do...

Thanks for the help!
Sig

 

[Siegfried Meier]

Ok, so the fact that ALL the switch LED's don't work seems to indicate something is F*cked.  When the readout shows the dB level, it doesn't matter if I turn it up or down, the numbers keep going down until it hits zero and then I hear no more relays clacking.

Any clue what's wrong with this thing?  I've been uber careful with the solder joints, and have checked everything to the best of my abilities...

Pin 5 is GND on a standard VGA connector, so I've made sure that pin 4 doesn't ground out with pin 5, as I understand from what Igor has said some cables are wired that way.

http://pinouts.ru/Video/VGA15_pinout.shtml

Thanks guys,
Sig

EDIT - ugh man, cock and balls I put every single switch in backwards...I see now that there's a + on the PCB, and on the back of those switches it also denotes positive and negative, what a pain in the butt it'll be now to pull all those out.  First time using these, consider lesson learned...  :-[

 

[Siegfried Meier]

Ok, so that wasn't much fun, but all this did was fix the LED's - the switches do the same thing backwards as forwards.

Still having this weird countdown thing, where the encoder does nothing but count down to 0 when I turn it left or right, til it hits zero and then nothing.

Chip screwed?  What else could be wrong here?

 

[kibadachi]

Siegfried,

check reply #298 from zenmastering and the reply from Igor. Your situation does the opposite but still seems similar ???

 

[Siegfried Meier]

Jeeez...same page essentially!  How could I have missed that.  

This sounds strange, I'll try changing R12 and R14 to 1k this morning, see what happens?

Thanks!

 

[Siegfried Meier]

Ok, I changed the value of those 2 resistors and all it does upon startup now is:

U20 - which I assume means V2.0

and then the encoder reads 0 and the knob does nothing...

I don't think it's the resistors.  I think the chip is screwed, prob didn't work right from the beginning.  Aren't these checked out before they get sent?  All my switches work correctly, relays clack away when each one is pressed etc.  Everything else appears to be working flawlessly...

Igor, been weeks since we've heard from you.  Would love to hear on this issue please.

Thanks,
Sig

EDIT - I put the 4k7 resistors back in and now I still get a zero reading and no encoder action.  I even swapped the input to the PSU since it was "technically" backwards before, still no difference.

 

[Siegfried Meier]

Man, it's sooooooo close.  As far as I can see it's functioning 99%.  I can save, all switches work, reset setup works, it just never counts up when I turn the dial, everything counts down...

Doesn't feel to me like it's a bad solder joint or anything like that...gotta be something real simple!