[Physical object verified] GAMEBOY card reader

This project comes from foreign websites, https://www.jrodrigo.net/es/project/gameboy-cart-flasher/ and https://github.com/melka/gbcartflasher

Follow the GPL3.0 open source license

Main functions: 1. Read the game ROM and backup archive of GAMEBOY cartridge;

                  2. Burn and restore archives to some burning cards.

The article project uses a PU processor. Because the AU is out of stock, the schematics are the same. If you are interested, you can make your own.

I used this article to ask for the open source schematic diagram of the GAMEBOY flash card . I searched many websites, and they all said that there are open source files abroad, but I have never found them. I have a terrible headache. If anyone knows about it, please let me know in the comment area. Thank you very much!

I made three versions in total. The first one I wanted to test was to use a serial port chip such as CH340C, but it failed~. The second version added a lot of ancillary components, and the third version deleted unnecessary components.

In terms of firmware, the open source version is version 2.1, and the current commercial version seems to be version 3.X or above, but I can't find where to download it, but 2.1 can already be used normally. If anyone has the latest version of the firmware, please share it if possible.

Firmware fuse settings: Using avrdude, fuses need to be set as low 0x1F and high 0xc9