README AGB_LIPO from makhowastaken

LiPo adapter for Game Boy Advance.

• Uses these battery terminals: https://www.aliexpress.com/item/32946601230.html
• a standard TP4056 module (Micro USB or USB C): https://www.aliexpress.com/item/32649780468.html
• and pretty much whatever diode you can get your hands on: https://www.aliexpress.com/item/32664545131.html

I got my boards in and had to make some alterations to get them to fit better. I'm still waiting on the terminals so I'll add a youtube video for instruction when I get everything in.

My Project README

Order at OSHPARK: https://oshpark.com/shared_projects/AJPIjHIz

Front:

• Solder TP1 to VIN+ of TP4056

Back:

Symbols

• U1 - TP4056(Have to be soldered UpsideDown) https://aliexpress.com/item/32649780468.html (0,41$)
• U2 - TPS3700DDCR (Texas Intruments) https://mouser.com/ProductDetail/Texas-Instruments/TPS3700DDCR?qs=mNuCSSXMdBz5rDLbdTsfrQ%3D%3D (1,79$)
• IC1 - LP38693MP-ADJ (Texas Intruments) https://mouser.com/ProductDetail/Texas-Instruments/LP38693MP-ADJ-NOPB?qs=%2Fha2pyFaduhxATx%252BYNp3uIz3XjGhpXqCpbQ80pAe8SqAsUaeuhDVzOCKiaIvHl6%2F (1,45$)
• D1,D2 - SS14 Schottky Diode (or silmilar schottky diode) https://mouser.com/ProductDetail/ON-Semiconductor-Fairchild/SS14?qs=mVVXn4M53U%252BvrBaFv5vr4w%3D%3D (0,76$)
• C1,C2,C3 - 10u CERAMIC(0603) https://mouser.com/ProductDetail/Taiyo-Yuden/JMK107ABJ106KAHT?qs=sGAEpiMZZMuMW9TJLBQkXhrP50NC0Yj7qpkxl5d0wRM%3D (1$)
• C4 - 220u TANTALUM(KEMET-B) https://mouser.com/ProductDetail/Vishay-Sprague/TR3B106K010C1000?qs=l4Gc20tDgJLwalMJRLTcCw%3D%3D (1,08$)
• R1 - 470K(0603) https://mouser.com/ProductDetail/Panasonic/ERJ-UP3J474V?qs=sGAEpiMZZMtlubZbdhIBINZyO39%252BOXIfR2tJtCQBH%2FQ%3D (0,18$)
• R2 - 62K(0805) https://mouser.com/ProductDetail/Panasonic/ERJ-6RBD6202V?qs=sGAEpiMZZMtlubZbdhIBIAseYdsNAjdpz1c9XO5OoSg%3D (0,14$)
• R3 - 1M(0603) https://mouser.com/ProductDetail/Panasonic/ERJ-UP3D1004V?qs=sGAEpiMZZMtlubZbdhIBINZyO39%252BOXIfwSlLGtGqBNU%3D (0,35$)
• R4,R5 - 240K(0805) https://mouser.com/ProductDetail/Panasonic/ERJ-PB6B2403V?qs=sGAEpiMZZMtlubZbdhIBIMNI7sOfyRuJn5D0R%252BVWI38%3D (0,72$)
• BT1 - 103048 LiPo Cell https://pl.aliexpress.com/item/33000132990.html (3$)

Cost

PCB manufacturing costs: 2$ on JLCPCB or 9$ on OSHPARK.

This project with JLCPCB will cost you ~13$.

With OSHPARK you will pay ~20$.

My Changes

• Load Sharing.
• Voltage Regulation to 3V.
• GBA Low Battery Light trigered at LiPo 3,4V.

CHANGELOG

>28.04.2020

• Base concept.

28.04.2020

• Added 3.3V Regulator.

29.04.2020

• Fixed Regulator capacitors.

01.05.2020

• Full circuit redesign.

01.06.2020

• One more full circuit redesign.

17.06.2020

• Finall release. PCB is now working corectly.