MicroSD Card Adapter For GameCube's Front Memcard Slots v2.0
Based on the SD2SP2 2.0 made by Extrems, Thank you for your hard work!
Important Note about Old Gerbers/Worn out SD Card Issues
Previous version of gerbers could cause 3v3 short to GND by some sus SD card models that have worn out edges exposing 3v3 plane to CD pin when inserted, this is fixed in new gerbers by making the SD card slot GND shield floating to prevent the issue regardless of the card being worn out.
One solution for old gerbers is to snip off the GND shield that the CD switch engages when a card is inserted to prevent old worn SD card edges from shorting to GND as shown in the image below.
Important
When using the adapter make sure to have the Latest Version of Swiss, Due to the way Swiss handles it in SLOT A it acts like a normal speed Passive SDGecko, in SLOT B it works in Semi-Passive 2.0 enhanced speed mode.
https://github.com/emukidid/swiss-gc
The PCB must be ordered (e.g. from jlcpcb) in 1.6mm thickness with surface finish ENIG at minimum.
3D Printed Case Enclosure
You'll need to 3D print the case enclosure Top and Bottom pieces from the Case folder to use it in your Memcard Slot preferably on an FDM printer, the case screws are countersunk self tapping M2x5 screws.
Note
R1,R2,D1,D2 are not necessary if you don't want to have LED's in your adapter or want to minimize on components.
SDGecko2.0+ PCB
C1: 0402 22u Capactior (10V Min) - DigiKey Part# 490-GRM158R61A226ME15DCT-ND
LCSC Part# C3845593
R1: 0402 14ohm Resistor - Digikey Part# P14.0LCT-ND
LCSC Part# C400609
R2: 0402 14ohm Resistor - Digikey Part# P14.0LCT-ND
LCSC Part# C400609
D1: 0402 Green Led 20ma (Dot on PCB footprint marks LED Cathode side) - Digikey Part# 1516-1216-1-ND
LCSC Part# C2856703
D2: 0402 Blue Led 20ma (Dot on PCB footprint marks LED Cathode side) - Digikey Part# 1516-1215-1-ND
LCSC Part # C965797
J4: MicroSD Slot - DigiKey Part# 2223-MSD-4-ACT-ND
LCSC Part# C113206
U1: OR Gate IC - DigiKey Part# 296-1093-1-ND
LCSC Part# C7470
Alt Nexperia Digikey Part# 1727-3067-1-ND
LCSC Alt Nexperia Part# C12488