UGS-muse preamp GB

[Eric06]

with what reference available would you like to replace the following items:
CMF551K5000DHR6
CMF551K0000FHEK
TMCMA1A476MTRF
593D475X9016A2TE3
T491X107K025AT

That are the 5 components missing from our GB

Alex

CMF551K5000DHR6 => CMF551K5000FHEB
CMF551K0000FHEK => CMF551K0000FHEB
TMCMA1A476MTRF => F931A476MAABE1
593D475X9016A2TE3 => TP3A475K016C2500AS
T491X107K025AT (In stock at Mouser)

 

[Stones]

To all the person I gave the firmware, this is to validate it.
I did not received any feedback yet, is it working well or did you find issues.

Alex, can you just double check that ?

View attachment 896567

Thanks

Looks to me like your GND is wrong pin. But I am basing that of PCB pictures

 

[PsykoK]

CMF551K5000DHR6 => CMF551K5000FHEB
CMF551K0000FHEK => CMF551K0000FHEB
TMCMA1A476MTRF => F931A476MAABE1
593D475X9016A2TE3 => TP3A475K016C2500AS
T491X107K025AT (In stock at Mouser)

thanks, I will order the missing refs

 

[Eric06]

Looks to me like your GND is wrong pin. But I am basing that of PCB pictures

Stones, you are right for the GND pin location.
Gionag, you have the others pins PC6, PC7 and PC8 correctly marked on the spare I/F.

PC6 => SPARE5 (pin6)
PC7 => SPARE1 (pin2)
PC8 => SPARE0 (pin1)
GND (pin 12)

Spare connector pin numbering (from bottom view)
5 ..... 1
10 .... 6
15 ....11

 

[gionag]

"of two... We made one" [emoji23]

 

[Eric06]

Yep.
Just a reminder that user's of the second encoder need to add the debounce circuit for the switch pin (SW). So you need also the 3.3V from the Spare I/F.

 

[gionag]

... while is can easily doable "on the wires", i am designed a neat pcb to bridge both of the connector, to carry also 5v+ for some type of optical encoder...
keep you posted..

 

[gionag]

if someone interested....
just let me know 😱

 

[Alex_twn]

Thanks Eric and Stones.

 

[gionag]

Yep.
Just a reminder that user's of the second encoder need to add the debounce circuit for the switch pin (SW). So you need also the 3.3V from the Spare I/F.

I think also that if weak pullup is not active on clock pins, you'll also need debounce on them if a mechanical encoder will be used.

 

[fencki]

if someone interested....
just let me know 😱

View attachment 896804

how much?

 

[Eric06]

I think also that if weak pullup is not active on clock pins, you'll also need debounce on them if a mechanical encoder will be used.

Sounds perfect.
Nice adaptor!

 

[gionag]

how much?

Free
but i think i can bundle it with the encoder adapter with ring led.
"master" is working...
i had a little hiccup on the usa customs with digikey and i have some components on hold here in italy waiting to be released,
once i have them i can also test the "slave" encoder board.
and then, if interested, i can give you the set (encoder board "master"[for volume] / adapter / encoder board "slave"[for source])
Just pay the shipping

 

[fencki]

yes that would be really nice!
🙂

 

[Stones]

I am now in front of my unit adding 2nd encoder connections could someone please send me the firmware stones dot mark at gmail dot com

 

[gionag]

I am now in front of my unit adding 2nd encoder connections could someone please send me the firmware stones dot mark at gmail dot com

Sent !

 

[Stones]

Lazy ugly switch debounce might help someone (only the switch as I am not using mechanical encoder)

 

[aterren]

Had the opportunity to take a picture of the correct orientation.
For future reference...

View attachment 893063

Thanks gionag. This is helpful.

Does anyone have a set of pictures of each board from each board from known working preamp? It would be great to have them as reference.

Assuming no one person has a complete set of photos I'd be happy to have people send them to me and I'll arrange them into a single collection. PM me and we can work out a way to transfer the photos.

 

[PsykoK]

Transformers received

 

[Stones]

After fighting with windows for two hours I managed to get v2.99 loaded and have yet to find any issues but I keep trying to find some