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Muses Volume

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#181
1. Two wires (left channel in and out) to muses pcb gnd (left)
2. Don't think so, it should mean that controller is doing it's job but muses chip consists of both digital and analog domain and you clearly have a problem at analog out

You can feed the input with a steady signal (signal generator, instrument or even web based) and see if you get some reading at analog out. If so, adjust the volume and see what happens.
If you connect the psu ground to the earth ground (better via loop breaker) do you still have that hum ?

Edit: I would do all the testing with a cheap test speaker, a simple gnd lift can cause major problem farther down the line
 
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#186
Hi Daniel. Thanks for the Muses boards that I received yesterday.

My boards will be soldered up using a reflow oven (its good to have friends!) and I'm wondering if you would be willing to share the file required to have solder paste stencils made as it would make the job much quicker and simpler, especially as I'll probably be looking to build some more of your Muses modules later.

I need to order some PCBs from JLC so adding a stencil to the order is easy and cheap.

BTW, have you considered using the JLC PCB assembly service so you could offer assembled modules?
 
#196
With J2 you can select between external 5V supply or the internal 5V regulator.
Internal 5V reg without display: R1=1k
Internal 5V reg with display: R1=100R
External 5V reg: R1=100R
Please have a look to the part list note.

Daniel
 
#197
Yes, i understand the selections—just wasn't 1000% sure what the jumper position should be for "Internal 5V reg without display: R1=1k"—
Which I'm now seeing indicated in the "Installation and connections", "simplest case" part of the guide should be 2-3. Thanks Daniel! Sorry for the trouble. You have a very compact and well-thought-out design here—excellent.
 
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