- Feb 25, 2016
Here are the pcb files, code, and bill of materials for my Wii Power Management System.
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
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)
the interface is shown in the Wiivision:
A - "Auxiliary" IO. default code there is no purpose.
btn - wire to a tact switch connected to ground for on/off
T-, T+ - thermistor for thermal protection. Cuts off ~75C
R-, B-, G- - wire to the common anode RGB led, Anode can be wired to a source voltage like 3.3v
CHRG - this is the DC voltage source charger input. Recommended to use 12V DC. Cannot exceed 14V! The default code is set to I charge 3.072 A which is ideal for a 1S2P 18650 battery configuration. Please make sure to check the specifications of the battery against the charging settings of the system before use.
B+ - Battery positive connection
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.