Optimizing ESP8266/ESPHOME for battery power (and making an ice bath thermometer as well)

It’s been a long while I wanted to check for how long can an esp8266 with esphome last on a battery supply. Yet I didn’t have a reason to get it done. Time to fix that and add yet another battery optimization manual for ESP8266 to the internets.

And what’s the big reason? The story is simple. I decided to try ‘cold water immersion’ practice and make it a habbit.Yep, not the cold showers, but true hardcore ‘CWI’. I started back in summer when it was hot as hell and went all the way through to November. The weather gradually lowered the water temperature for me from ‘ah, cool and nice’ to ‘Awh shit this is cold!11’. Ideally that would become a habit.

However in November I had to pause that for a few weeks. And that meant the only thing: I had to start over again. And since the weather isn’t helping me any more, I’d have to take care and gradually decrease the temperature myself.

The first idea was to just order a dumb water thermometer. But why order when you have all the parts in stock and can just build one? And with cool features!

Hard as a rock, dumb as a brick (c)

WAAAGH-cination: Results

I have to admit, it took me a while to figure out what the heck was going on and finally write this post. To make the story short, I didn’t have a chance for a clean experiment and got ‘something flu-like’ a week or so after vaccination along with my family. No COVID according to the PCR testing, so I got on my feet quickly, got the second doze of the vaccine. Blood tests showed COVID antibodies for me, but not for my family. Yeah, and I got a nice and shiny certificate for that.


WAAAGH-cinating with Sputnik V vaccine

This post (or, perhaps, a few), would be totally different from the stuff I usually write on my blog. I usually post cool stuff I make, tips’n’tricks, tech hacks and other useful stuff, but this time it’s something totally different.

This time I decided to be like an ork from Warhammer and sign up as a volunteer to the death squad test out the new COVID-19 vaccine. And document my experience in the blog. Why? Becuz WAAAGH!