I learned some days ago how #moisture gets trapped inside #sealed enclosures used for #electronics when exposed to daily cycles of heat and cold.
The cold creates lower pressure inside. If that overpowers the seals, then outside air gets sucked in, carrying moisture. This extra moisture can condense inside and accumulate at the bottom.
In the next warm part of the cycle, if some air is expelled because of the higher pressure, that moisture is not carried out because it is in a liquid state.🧵
Repeat this a lot of times, and you will get the electronic circuit diving inside the enclosure 😂
I want to measure how the humidity and pressure fluctuate inside an enclosure that I'm prototyping for an industrial composting temperature sensor, so I assembled a quick hack with an Adafruit ESP32 Feather V2 running SensorWatcher that will report that every 10 minutes. The sensors are an HTU31D for humidity and a BMP388 for pressure.🧵
So I had a look on the sigrok wiki, and I've narrowed it down to a couple but still looking for recommendations for a logic analysier that people have used. Looking for something a little better than the £10 streaming type - in the sub £100 price range. Sigrok compatability ( or works on linux and older versions (11.7) of OS X #electronics#esp32
... the cover: materialized and in its natural habitat.
The wall socket box was too shallow to hold a breaker, 24V transformer and #Esp32 board with a relay.
Not very aesthetic, but it covers all the door unlocking junk.
Anyone else here doing stuff with #CircuitPython on an #ESP32 board?
I got through the installation and I can edit and run code in the web editor now... but that stores the code directly on the board, which is rather inconvenient if I want to do things like put it in a git repo, and use an IDE for editing. I could edit the code on my laptop and then upload the files to the board through the web editor, but that seems very tedious.
Is there a tool that does some kind of automatic sync for this?
Quick question for all you far more knowledgable types. I noticed that after I put my esp32 custom board into deep sleep it settled to a draw ~23.5uA but 350ms later there was a gradual (over 100ms) increase up to 27.7uA after which it dropped back to ~23.5uA. This happens after each wake and deep sleep cycle, but only once per cycle.
I have a suspicion but I don't want to influence responses - plus I don't really know what I'm doing 😔 - Some obvious known pattern?
So I bought a bunch of stuff to build an #epaper#weather display based off an #esp32 board, sort of mixing and matching stuff up from a few project I had found.
I had assumed that the hardware would be supported by #esphome, but the amount of stuff that especially me actually supports is... Disappointingly low.
So, besides learning how esphome works, I now get to figure out how to add a 3rd party library in there and how to write a panel description so it can drive it.
Had similar long term ambitions on ESP8266 when I started esp-open-rtos a decade ago, but ended up being hired by Espressif instead. 😅
From inside we always had theoretical support for open sourcing more of the WiFi stack, but it was never going to become a priority unless some high tier client demanded it...