Question Ashida not detecting microsd on pms pd 3

[FuhBreezy]

I just finished up wiring everything on my ashida but now the microsd card can't be detected when booting up the system. It worked with it when I trimmed the wii and was testing it on my little setup. I used the sound option on the Multimeter to see if the wii was detecting the d+ and d- pins on my pms pd3 and it did go off so I know my soldering shouldn't be the cause of this issue. I've also tried 2 different microsd cards and still get the same result. I don't know what else to do at this point.

 

[Gman]

The soldering on the Vias looks okay. Just make sure you did not mix up D+ and D-. The wire on UP looks like it is fraying. It might not be the cause but it should be fixed.

 

[FuhBreezy]

The soldering on the Vias looks okay. Just make sure you did not mix up D+ and D-. The wire on UP looks like it is fraying. It might not be the cause but it should be fixed.

I double triple checked on the Wii trim forum, I don’t think it’s that. But yeah I’ll have to resold the UP wire. I think it might have to do something with the 3.3V because I have 4 wires going to the 2 solder pads.

 

[FuhBreezy]

I used another extra pd board I had laying around and I still got the same result. Does the data wires require a bigger gauge? I used 34 gauge and I’m wondering if that has anything to do with it.

 

[ColdSolderJoint]

I used 30 gauge magnet wire for my usb lines I am no expert but it seems to me like 34 gauge might be pushing it. One thing I noticed is your usb wires are not twisted as tight as the ones I have on my trim. Also your wires look like they are tinned pretty good on the WII but I cant tell if the ones attached to the PMS are. I have had trouble tinning cheap magnet wire. Make sure it is actual tinned with shiny solder and the solder is not just stuck to the outside of the wire.

TLDR:
I would first try re-tinning the twisted wires on the side attached to the PMS, if that does not work re-twisting some wires but much tighter (preferably in a 32/30 gauge wire).

Also 4 wires going out of 3.3v should be fine maybe check voltage with a multimeter to make sure. My Ashida has 4 wires on 3.3v and I have USB working fine

 

[FuhBreezy]

I used 30 gauge magnet wire for my usb lines I am no expert but it seems to me like 34 gauge might be pushing it. One thing I noticed is your usb wires are not twisted as tight as the ones I have on my trim. Also your wires look like they are tinned pretty good on the WII but I cant tell if the ones attached to the PMS are. I have had trouble tinning cheap magnet wire. Make sure it is actual tinned with shiny solder and the solder is not just stuck to the outside of the wire.

TLDR:
I would first try re-tinning the twisted wires on the side attached to the PMS, if that does not work re-twisting some wires but much tighter (preferably in a 32/30 gauge wire).

Also 4 wires going out of 3.3v should be fine maybe check voltage with a multimeter to make sure. My Ashida has 4 wires on 3.3v and I have USB working fine

I twisted some 30 awg tighter than the photo. Still doesn’t read the microsd. Now I’m wondering if it’s my trim that’s bad.

 

[fluffypenguin]

The gauge of the wire shouldn't be the problem, since the usb lines are data with very low current going through them.

For the twisting, using a drill and twisting until it breaks off is the recommended method. Here is an example from YveltalGriffin on the discord for how it should look:

If it still doesn't work,try the other set of usb vias. Sometimes static can damage the usb lines.

 

[ColdSolderJoint]

one more thing, your usb wires don't look super long but for a proper boot they should be as short as possible It's probably worth trying to shorten the wire a bit to rule out wire length. Other than that I would second what @fluffypenguin said and would recommend to try the USB vias for a different port. For one more sanity check you could make sure you have continuity and a low resistance between the pad on the PMS-PD and the via on the WII.