I got an email alert last night saying I had a package waiting for me at the UPS store. I figured it was something else, as I hadn't even gotten a valid tracking number on the flash chip order. Happily, it was the 1GB and 8GB chips I'd ordered. They got here faster than I was expecting. They're very tiny. Like half of a pinky finger nail tiny. I might get around to wiring up the break out boards and the flash chips tomorrow evening. If so, I'll post another log and upload some photos. After that begins the software development process. I've struggled my whole life with finishing big projects, so it's exciting to be making such good progress with this one. I still don't have the programming skill to finish this just yet, but there's nothing stopping me from learning. The plan is to start by just getting the SD chip to show up as a removable drive on the Pi 4. After that, I'll start filling in the back end code for the simple interface I made. It needs to be able to mount and eject the cart, load software from the cart, and back up and restore the cart. I want to find a way to make the EEPROM code trigger a python script at start up that runs on the Pi and loads the PiCart program. I need to really dig into the OS Python module soon. 

Another big milestone for my little project. Hope everyone is enjoying the updates. I know they've not been anything major. I'm just excited to be making any progress at all.