Also, the first assembled v0.6 board!

Ya, I found that one too, once I figured out what was going on.
I should probably consider some filtering on VBUS, as the new power management IC has a switchmode supply

yup! It's enough for the power management IC to think VBUS is present, but in an undervoltage condition. Which stops it from sending an interrupt.
Temporary solution on this board: lift the leg going to VBUS on the ESD package.
Will find a new ESD protection device, I guess!

Yup!
Spent way too much time chasing it as a software bug, when it was a hardware bug the entire time!

and yes, I have figured it out!

R11 is internal to the chip handling the USB interface. I just added it for clarity :)

The bigger the battery, the better, IMHO!
My main limitations are the round form factor, and not wanting it to be too thick, so smaller batteries that can be swapped worked well

It's based around an ESP32S3, as I needed the extra power for GIF decoding, and the LCD controller peripheral, as the display uses a 16bit RGB interface

It's a Nokia style "BL5C" battery. So in theory about 1000mAH, but I haven't actually tested a battery to get it's actual capacity yet.
In practice I have gotten about 3-4 hours out of it depending on the content it's playing!

It's from github.com/LeoDJ/Paw-Co...
It is a Tag-Connect footprint disguised as a paw
The pinout is just an SVG from the github, with text added

the big one is new on this revision. Realized I really need to mark out what the pinout was, as I hate when other people don't do that.

Let's not talk about the 3d print graveyard it took to get here