About a year ago now, I built my first wii portable. Despite people in the community saying that the ashida was the easiest portable to build in the community, I decided that I didn't like how bulky the ashida was and settled on a g-wii.
I did this all for my highschool “capstone” project. A self guided project where you could do whatever you wanted, as long as you could make a presentation showing your skills and growth by the end of it. (I got 100% on the project btw)
That portable has some of the most atrocious wiring in the world (see picture) but it still works to this day, and I would never change a thing about it.
Recently, my shifts at work were cut down due to slow sales which gave me a lot more free time. This led me to come back to the bitbuilt community with one simple goal… the rite of passage.
I heard about this back when i was researching for my g-wii. The elusive “omega trim”. A trim so “difficult” that it is considered somewhat of a status symbol to make a working one. So that is what this thread is. It is documenting my trials and tribulations of building my first omega trim.
So far what I've learned is that it's actually not that difficult. (hence the difficult in quotations) I quickly figured out that I needed to do two big relocations.
Thankfully, it was pretty easy to find a BOM for resistors for one of the relocations from yveltal, so I don't have to desolder all the components around the chip. Which makes it a little less daunting.
So far what I've done is pretty simple. Y2K told me that I should get a working OMGWTF, then trim it to a LMAO, make sure it's working, then trim it to an omega.
Right now I have step one complete. I have a working OMGWTF running off a pms 2. The only steps I've done towards a further trim is relocating the u10 to the back of the board based on a picture I found. I checked continuity and stuff and everything seemed like it would work and sure enough, it still booted.
The other thing i’ve done is move C5 to the right.
I’ve seen this in many omega photos, so i was pretty sure this was the right thing, until i saw this thread https://bitbuilt.net/forums/threads/life-goal-trim-an-omega.4533/
Where sparklebear relocated c200 from the back of the board to the same spot that I put c5 on the front of the board???????? It seemed to work for him, and c200 seems to do the same thing as c5 with one end connected to 1.8v, and the other to ground. But shank’s wii super thread says that they have wildly different capacitance values. Other trims seemed to have removed c200 entirely, so i tried removing it and keeping c5 intact, and it still boots. So is c200 needed at all? Or will this cause problems later on? This is still a mystery to me. For now, c200 lives on my wall where it cannot be lost.
Will post with more updates (shorter updates) once my flex pcbs arrive.
I did this all for my highschool “capstone” project. A self guided project where you could do whatever you wanted, as long as you could make a presentation showing your skills and growth by the end of it. (I got 100% on the project btw)
That portable has some of the most atrocious wiring in the world (see picture) but it still works to this day, and I would never change a thing about it.
Recently, my shifts at work were cut down due to slow sales which gave me a lot more free time. This led me to come back to the bitbuilt community with one simple goal… the rite of passage.
I heard about this back when i was researching for my g-wii. The elusive “omega trim”. A trim so “difficult” that it is considered somewhat of a status symbol to make a working one. So that is what this thread is. It is documenting my trials and tribulations of building my first omega trim.
So far what I've learned is that it's actually not that difficult. (hence the difficult in quotations) I quickly figured out that I needed to do two big relocations.
Thankfully, it was pretty easy to find a BOM for resistors for one of the relocations from yveltal, so I don't have to desolder all the components around the chip. Which makes it a little less daunting.
So far what I've done is pretty simple. Y2K told me that I should get a working OMGWTF, then trim it to a LMAO, make sure it's working, then trim it to an omega.
Right now I have step one complete. I have a working OMGWTF running off a pms 2. The only steps I've done towards a further trim is relocating the u10 to the back of the board based on a picture I found. I checked continuity and stuff and everything seemed like it would work and sure enough, it still booted.
The other thing i’ve done is move C5 to the right.
I’ve seen this in many omega photos, so i was pretty sure this was the right thing, until i saw this thread https://bitbuilt.net/forums/threads/life-goal-trim-an-omega.4533/
Where sparklebear relocated c200 from the back of the board to the same spot that I put c5 on the front of the board???????? It seemed to work for him, and c200 seems to do the same thing as c5 with one end connected to 1.8v, and the other to ground. But shank’s wii super thread says that they have wildly different capacitance values. Other trims seemed to have removed c200 entirely, so i tried removing it and keeping c5 intact, and it still boots. So is c200 needed at all? Or will this cause problems later on? This is still a mystery to me. For now, c200 lives on my wall where it cannot be lost.
Will post with more updates (shorter updates) once my flex pcbs arrive.
