Today I fixed the LiPo battery readings by using a LiPo flow chart to match the curved depletion of LiPo batteries. When I finished I checked with a multimeter and the predicted voltages were basically spot-on, matching the multimeter exactly once I added a calibration step to the math to account for the difference.

I also found out some bad news, which is that my e-paper display is incompatible with partial refreshes (updating the pixels of the display in the part you are changing specifically rather than the entire display) in the library I am using, and I have not been able to find a replacement library so I am assuming it is just entirely not possible. This does suck but I think the project will be okay and I will still be able to make a good final product. That’s about all for today, I was gonna work more but unfortunately I was busy, my goals for tomorrow are going to be working on making more UI besides the battery, dealing with the no partial refresh issue, and (hopefully) acquiring an SD card and starting to figure out how I’m gonna load text onto the screen. See you guys tomorrow!