I’ve just made an fresh install, and the sound is all craked up. At first it was slow, now is practically no -existent. But, when I take out the SD card, the “Directoy not found” sound is correctly heard. And the pixels seem to be correctly illuminated.
As installed:
Today:
When SD card is taken out:
Any help on how to troubleshoot this problem will be appreciated. I would like to try some things (like testing speaker and booster) before swapping the board.
Did you do sdtest in serial monitor ? Maybe a bad sd card ?
I tested it on a testing station and it works well. Then flashed a new board and tested it on the testing station, and also works well.
but did you run sdtest in serial monitor (from Arduino) with a ProffieBoard connected to your computer and the sd card in that ProffieBoard to test the sd card (not the ProffieBoard) ?
I got 1976kb/s and 22.41 simultaneous streams. So I don’t thinks it’s the problem.
Sounds like a short maybe. Check over all the wiring. Maybe a stray strand is touching another pad?
For me, on a particular install, when I was holding the board, the sound would play slower that usual as if my fingers were sorting the pads.
It doesn’t sound like an issue from interference with the crystal clock… if the sdtest didn’t show any errors while running (could you post the output here?) that’s a bit odd.
I’m inclined to think it’s not an SD issue though also just because it’s playing back just fine w/ smooth swing if you listen, it just keeps cutting out.
It’s not all cutting in or out though so it’s not a hardware issue w/ the amp, otherwise you would hear the hum and whatnot whenever it cut in, but you don’t as far as I can tell.
I’ve had similar things happen before when there’s low-power and high CPU usage… things just kind of break, so I’m inclined to say it’s a bug in ProffieOS.
I started testing random shorts, and got one between Data2 and GND. But the strange thing is that once I de-soldered the Data2 wire, I couldn’t reproduce the short between Data2 pad and GND, nor between the wire and GND. Regrettably, while doing the testing I put the battery wrong and broke the PCB. So I’m taking out the PCB, the board and using new ones. Hopefully that should solve it.
Rewired the whole thing, new board, new PCB. Same issue. Now, when I put the battery, I get conductivity between LED2/3 and Positive. Only thing that could be doing strange things is the wire from the battery - to the switch to the transistor. May be I wired it wrong?
Did you try a different sd card?
No, but I will. But it’s not the SD, it’s some short somewhere. The speaker degrades each time I turn it on. And I hade continuity first between GND and USB D-. Then between LED2/3 and Positive. I think I will scrap all and start again. But I have two board with what look like burn booster. Is there an easy way to test which components are gone? I assume Q7 and the booster, but that’s just a guess.
No.
However, if Q7 is dead, the board just doesn’t work.
A bad booster tends to lead to bad sound, but you can measure the 5v pad to see how it’s doing.
(You might need something like an oscilloscope to see noise on the 5v pad though.)
So, just with a tester I can’t do much?
Testing the 5v with a multimeter is a good first step.