https://github.com/Gmanmodz/Wii-Power-Management-System
My Wii PMS pcb files, code, and bill of materials is now available to download for free on my github! This is an all-in-one system for battery charging, battery protection, Wii custom regulators, and more. The parts can be ordered from digikey for just under $30 and the 4layer pcb can be acquired cheaply from JLCpcb, OSHpark, and others.
Portablizing has been plagued for years from inefficient buck regulators, expensive smart lithium-ion chargers, and poor quality Chinese battery charging pcbs. This pcb will solve many problems we faced previously while also having a more integrated user-interface.
Features:
4 buck regulators – 1v, 1.15v, 1.8v, and 3.3v
1 boost regulator – 5v
Battery management IC – seamless play and charge and battery protection
PIC microcontroller for enabling the regulators, programming the battery IC registers, reading battery statuses, thermal protection, and other tasks
Interface:
hold down button for around 1 second to turn on and off. Tap button shortly to cycle through the led modes:
1. leds off
2. RGB fade
3. Battery monitor
4. Shipping mode (when it is turned off in this mode, it cannot be turned on until you plug in a charger)
It’s not perfect by any means but it is stable and has already been installed working in 3 portables. I would like to thank Aurelio for the answers to many questions I had over the past 2 years I’ve worked on this and also for the inspiration from his Powermii. I’d also like to thank Shank for helping me test it further on the Wiivision project.
GmanModz 