Worklog [2022 Contest Entry] Wii Console designed after my favorite Gamecube game

[MJMT]

Just a little update: I finished printing this out several days ago- need to do a bit of drilling and painting but I think it could work as the final if I work with it enough. I got 3.25v on my 3.3 today. I had replaced the resistor but that didn't do the trick.... I popped off the voltage regulator, re-did the solder, and used the heat gun to put it back on there.

 

[MJMT]

It looks like the 3v3 and 1v both draw down significantly under load to the point of being unusable.. Something may be be flawed about my power system as a whole.

Edit: I just ordered the inductor it calls for in the data sheet directly from Coilcraft. Gotta love that $8 shipping for a $1 part.

 

[MJMT]

I got the new inductors today and put them on by expanding the pads with wire.... The voltage problem was exactly the same as before. I figured my N-Channel Mosfet must be making the ground unusable and took it off after that. After removing the mosfet I found that my power supply itself dipped to 3.5v under load and figure the power supply itself must be inadequate with its 5v @ 2amp. I guess I'll have to buy a usb-C breakout board to feed it 5v from one of my larger supplies and see where I go from there. I'd still like the N-channel to work for my on/off switch at some point if anyone can offer any pointers. Using part # STD5N20LT4 with a 1kohm gate and 100kohm pull down resistor.

 

[MJMT]

I now have 3.22, 1.05, .9 under load with no video output. Had to re-attach the 1v regulator twice.

 

[MJMT]

Still testing my custom regulators... Got this board to show me a black screen which is actually an improvement. I have everything I need to finish the 3D print models so I'll have that to show soonish.

Edit: 3/11/23 7:32 EST - I just ordered larger resistors for RBF 2 for all 3 voltages. 1v will be going from 6.65kohm -> 8.06kohm, 1v15 will be going from 9.9kohms -> 9.31kohms

 

[MJMT]

We have.... a boot! I moved my 9.09 kOhm resistor to the 1v regulator and changed the 1.15v regulator to 9.31 kOhm. I can now check my trimmed boards with it to see if they are viable.

 

[Customledmods]

Great work

 

[MJMT]

Here's a little progress update:

I only have a few more trims to make to my plastic before I paint it. I currently have a working trimmed board for this project and just need to do the magnet wires for data stuffs.

 

[MJMT]

Another small update..... Just painted and drilled as you see here.

 

[MJMT]

Here's the finished top half. I'll try to finish the bottom this weekend and call it done.

 

[MJMT]

Pretty much done here but- I need an extra 3mm of clearance from the top to the bottom given where I put the power switch and vent fan. I'm printing the 3mm shim and see how I like it. I also did a little redesign on the bottom in Blender that I will try to print as well. If my modified bottom prints well enough I will transfer everything to it.

 

[MJMT]

I think I'll just call this completed.