Ghosts make wii micro with wii 4 layer ?

[groseil]

Hello, I want to make a wii microphone but I only have a 4-layer model (I know that a 6-layer is recommended for this type of project)
So I was wondering what the cut would be for a 4 layer Wii mic. the only picture i found here is of a 6 layer wii, does it also fit a 4 layer?

 

[Stitches]

Afaik the Noldtendo Wii Micro design requires a 6 layer Wii due to the trim dimensions. 4 layer Wiis have the NAND chip and 1.8v reg rotated 90 degrees and thus have a slightly longer trim which won't fit inside the case. You would have to modify the case design to be a bit longer in order for a 4 layer board to be compatible

 

[groseil]

dacor so I just have to lengthen the cut lines of my wii so that all the trimmings fit? (I will redo a box for the wii 4 layers)

 

[Stitches]

I think so, yes. Extend the trim lines to accommodate the essential functional area shown in the 4 layer OMGWTF trim, and then if you lengthen the case by 10mm or so it *should* work just fine. The 4 layer and 6 layer Wiis have the same size heatsink in the same place with the same screwholes and the same fan, so once the case is enlarged to fit a 4 layer trim it should just work as a drop in replacement. All you have to adjust for are the voltage supply locations and the BT module relocation.

The 4 layer boards have no convenient BT vias like the 6 layers do, so you'll have to do the trace scrape and solder magnet wire to the traces before mounting the trim to allow for the BT module relocation to work.

 

[groseil]

ok but for the BT module I'm afraid of breaking the traces and is there a clearer guide on where to solder my magnetic wires from the BT module to the wii

 

[Stitches]

The BT relocation is outlined in the 4 layer Definitive Trimming Guide about as clearly as it can be

 

[groseil]

is the fit good? (I haven't sanded and removed the unnecessary component yet)

 

[CrazyGadget]

That looks pretty solid to me! Yup just remove any cut-though components and what's left of the stock voltage regs, give it good sand and you'll be good to try it out!

 

[groseil]

how do i check if there are any short circuits in my card before plugging it in to test it

 

[CrazyGadget]

https://bitbuilt.net/forums/index.php?threads/wii-trim-resistances.2602/

 

[groseil]

Hello again, I have several questions. I have started the wii with my pth08080 and suddenly a black screen appears and about 1/5 of the attempts there is the image which tells me that I have no usb keys plugged in so I plug it in and it is written loading on black screen and it remains blocked on this image. (let me know if I'm not clear in my words)

 

[Stitches]

Can you show us photos of your wiring?

 

[groseil]

here are my connections.

 

[groseil]

and also the fan spins and the GPU CPU heats up

 

[Stitches]

Did you check that all the resistances were within acceptable bounds before wiring in power? If the USB connection is having issues it could be something like a transient short on the 5v line.

That is assuming the problem isn't this bit here that looks like a straight up short

 

[groseil]

I think I understood something... when I plug in my usb key and start my wii nothing happens just a black screen but when I remove my key and restart, it shows me an error with RVL which tells me that the key usb is not connected. (I double-checked if my connections are good but everything seems to be in order.) Are there any connection wires missing for everything to start correctly? Thanks for your help !

 

[Stitches]

Nothing is missing that I can see. Did you fix the short I pointed out before?

 

[groseil]

Yes and RVL loader error code its 00

 

[groseil]

I don't think it's normal but for each resistance between 3.3v and the other voltages I have, it's around (17k ~) and when I look in the resistance guide it says that it is supposed to have 9k .
Does that mean there is a short circuit somewhere?

 

[Stitches]

If your regs are connected to the Wii when you measure, it can skew the results. To answer your question though, a higher resistance is rarely a cause for concern. What you need to look out for are lower resistances, particularly single digit readings as those indicate a short.

I recommend desoldering the regular wires from the Wii and re-taking the resistance measurements. Then later on when you reconnect the regs, measure the voltage on your 5V line and see if it's dipping below 4.5v