The SQFMI Watchy is a fully open-source, hackable ePaper watch based on the ESP32 with a crisp, glare-free 1.54" 200x200 ePaper display which can be programmed using the Arduino IDE and lots of your favourite Arduino/ESP libraries!
SQFMI Watchy, a hackable ePaper watch based on the ESP32.
I've actually just received one of these HATs (the crashing version), and found this issue because my Pi Zero was crashing. Thanks for all the suggestions here.
Instead of messing around with capacitors, wouldn't it be simpler to do this:
remove (clip off / unsolder) the 5V pin(s) from the Pi header
attach the HAT to the Pi
solder a wire from the 3.3v pin to VCC on the HAT