But I suppose the extra grounded connections on the SD card slot could be the JTAG when using something other than an SD card slot.Just a couple things to note is that the wiikey and wasp are true clones.I tore down both a wasp and wiikey sd card slot just to be safe but turns out that they are exactly the same as far as the sd card slots are concerned.
I am also using this image for referencing pins: (while confirming with several other sources for naming consistency) Important note pointed out by megalomaniac. The SD card slots for WASP and WKF are fully interchangeable only if the FFC cable of the host modchip is utilized. The original SD card slot on the wiikey is a little big and the wasp fusion SD card slot is even bigger so its not exactly ideal for a portable, so the best option is to replace it with a micro SD card slot. Here are my findings: (pics are a bit big) Here are the front of the wasp and wiikey fusion SD card slots, obviously nothing interesting here to see. Wasp WiiKey Here is the back, even more boring: Wasp Back Wiikey Back Here are the boards without any components: Bare Wasp Bare Wiikey And heres the wiikey SD card slot after removing the white solder mask: Wiikey Sanded So now after some tracing and double checking, both circuits are exactly the same. Install Wiikey Fusion Modchip For Wii Software That IPlease note that the schematic that I have here has different names for each resistor due to the software that I used to create it, the values of the resistors, however, are clearly labeled on the schematic. ![]() At the top of the schematic we see two capacitors, a 10uf and a 1uf capacitor between power and gnd, this is just some simple decouple and noise filtering. Now if you do a little math you can see that most of the voltage is dropping of the 68.1k resistors and going straight to the data line. Your guess is as good as mine for the reason for this but the most probably reason is signal mirror filtering. When high speed signals are sent over long wires (in our case the FFC cable) there tends to be some mirroring forming after long periods of time, so these resistors are there to filter and dampen the ringing. As for the 15k resistor on the clock line this is mostly likely a damping resistor for any ringing that would occur. So overall the extra components are for filtering and protection. I did discover that if there is no cable plugged into the wiikey it will error out so at least some of the parts or the FFC cable is necessary for proper operation. It could also cause issues on the data lines with long game times so Id recommend leaving them on. Heres the front and back of the board that Im currently having fabricated at OSHpark: On the right hand side of the board you can see a second adapter for mounting and soldering a micro SD gecko board. The footprint for the micro sd card slot uses this part from digikey: I dont have a part for the FFC connector as I just copied the footprint from the SD card boards. As I mentioned earlier both FFC connectors share the same footprint) All the other components are using the standard package sizes from the original board so if you have an original SD card adapter you can transfer the parts over. Ive updated the pcb files and you can download them here if youre interested here. Or you can just order them straight from the shared PCB way project. It costs 6.60 for 3 with free shipping. Remember a link to the SD card slot on digikey is hosted above. Here it is in action, you can see the repaired ground trace with the air wire. But that does make me think, where is the programmer connection on this board But it is true that I did not cheak the outputs on the FFC or the pitch but the footprint is the same so Im assuming the footprint is the same.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |