This board was made primarily for my Pocket Color project (MGBC-MBL-01). The Pocket Color is a Game Boy PCB that fits inside a Game Boy Pocket shell, but utilizes the Game Boy Color CPU, and includes a variety of other modern features. The project can be found at this link: https://www.pcbway.com/project/shareproject/Game_Boy_Pocket_Color_MGBC_MBL_01_Half_silkscreen_version_7490e384.html

Some features of this power board that differentiate it from other power supply boards for Game Boys include:

• Changing the power switch to a "soft power switch," meaning the main power of the Game Boy does not flow through the switch. A dirty power switch can severly impact performance, so using this scheme can remedy that issue.
• Bootloop protection circuitry to prevent overdischarge of AAA batteries, and to allow the Game Boy to die gracefully instead of violently stuttering until the regulator gives up.

While designed for use with my MGBC boards, this power board has been tested in IPS-modded Game Boy Colors and Game Boy Pockets as well, but not extensively. I don't anticipate any issues when used properly.

Please review all the information on my GitHub repo, for information on how to build and install one for yourself: https://github.com/MouseBiteLabs/Pocket-Mouse-Power-Board