Audio board rework - Githubissues

CrashOverride85 / zc95

4 channel EStim box inspired by the mk312bt, with Lua scripting support

GNU General Public License v3.0

46 stars 12 forks source link

Audio board rework #125

Closed CrashOverride85 closed 1 week ago

CrashOverride85 commented 3 weeks ago

Whilst it does mostly work, there are numerous issues with the current audio board:

Silkscreen for D3 is backwards
2n7000 is poor choice of MOSFET (see #114)
R27 pull down should either be a pull up, or just omitted
BoM spreadsheet is missing IC sockets for U2 and U3
Having that one SMD part in there isn't great

Solution: redesign the board to be fully SMD, using the JLCPCB assembly service. Swap to AO3400 MOSFET.

heavyrubberslave commented 2 weeks ago

I have a question regarding the R27. According to this issue it should be "omitted". Does this mean I need to jump/connect the two pads of the R27 with some plain wire, or does it mean I don't need to solder anything and leave the pads for R27 completely blank?

And for now just solder the 2n7000 MOSFET, as it's the best choice I currently have with the current version of the PCB?

CrashOverride85 commented 2 weeks ago

Yeah, just don't solder anything and leave the pad for R27 empty. Without R27, I think the odds are good that a 2n7000 will be ok; it's working for me with an 2n7000 and R27 present, and removing R27 will only make it (much) more likely to work. I'll hopefully be posting an update about the redesigned SMD board in about a week.