So I'd been struggling for a while now trying to reduce the power consumption of a small Thread-powered ePaper dashboard and I finally cracked it, but the solution, after messing around with kconfig and board definitions for ages and ages, made me feel like a dummy. So I wanted to share my embarrassment in hopes it might help someone else in the future.

Since this is a long story (sorry, not sorry?) here is the TL;DR : If your display allows you to bypass the LDO if you're feeding it its 3.3v operating voltage, do it. You'll save over .5mA draw as was the case for me.

A few caveats to begin: My code is written by GPT Codex. I am a designer, not a coder, but I've always been super fascinated with tech, and indeed have taken coding classes in the past and wrote HTML/CSS early in my career. I LOVE making things, fixing electronics, repurposing stuff, etc. I would pay $100 in components to make something myself instead of buying a $50 piece of junk from Aliexpress.…