(09-11-2024, 09:13 PM)gperpetuo Wrote:(09-11-2024, 02:08 PM)hifinet Wrote: Where did you get the module? Soldering of the caps looks sloppy. Order mine from Ali HuaXinHuiDianZi Store.
I believe the smaller caps are the power supply decoupling caps and are required for stability. The larger caps are connected to pin 7 of the chip, and it is my understanding that they can be removed. It will change the sound quality, but the chip will still function.
I bought mine from "SHS IC Store" for 6.62€. Already asked for refund...
Fortunately I have access to some nice "toys"/tools at work so I could take the module out during lunch time. All caps on my board are the same. Looked at them with microscope at work...
Found HuaXinHuiDianZi Store, same price (6.64€). But had to search quite a bit to find it... From the pictures they have, it's easy to see the difference on the caps size. (their ranking is also quite good). Already bought one not to loose more time. If I have a replacement working, I'll make a second DAC... already have 4 more pcb's, cap's, resistors, etc...
I'm contacting the seller for the pin definition of module, I hope someone could come up some idea to modify these modules since I just bought 3...
I think the jump wire between ProtoDAC and 1387x8 module should do the trick, but I have to know the pin definition of this module.
And further more, could help someone who get the incompatible module can still use it on ProtoDAC.
EDIT1:
Just found something maybe useful.
EDIT2:
The seller said he cannot and will not contact the PCB layout provider for the PIN definition or the schematic, which is pretty sad news.
