The Cave Pearl Project (arduino based underwater data loggers, used for real science in cave systems) has a blog and several Youtube videos with info about rugg

The Cave Pearl Project (arduino based underwater data loggers, used for real science in cave systems) has a blog and several Youtube videos with info about ruggedizing electronics for humid environments and temperatures from freezing to about 60 Celsius. [1] Two words: conformal coating. Lots of other good in-the-trenches reporting of hard-won knowledge in the blog. Many epoxy resins shrink significantly, for example. That may or may not be important for your project. The blog is not super condensed but it's worth reading, especially for seeing the evolution of design and construction practise from the early years (2011) to now. There's a book, now somewhat dated, on the Protection of Electronic Circuits from Overvoltages (lightning strikes, or fridge motors, for example): [2] TVSes (transient voltage suppressors) are still in use, however. Even varistors. Connectors are the bane of every electrical engineer's life. There are more designs of connectors than of any other category of component, and probably there are good reasons for all of them to exist. I haven't got any good references for this topic though. Other things like fuses, fireproof insulation on on your power cables, physical design such that prying objects can't touch high voltages, and so are about protecting the rest of the world from your projects. Rod Elliott's web site [3] is a mine of information for beginning to intermediate hobbyists. It's focused on analog, audio specifically, but when you get down deep enough, everything in electronics is analog. you need to know about resistance, capacitance, and inductance, earthing (grounding) layout, and other similar topics. 1. https://thecavepearlproject.org/2023/03/17/waterproofing-your-electronics-project/ https://thecavepearlproject.org/2023/03/17/waterproofing-you... 2. https://store.doverpublications.com/0486425525.html https://store.doverpublications.com/0486425525.html Available on Amazon as an ebook. 3. https://www.sound-au.com/articles/index.htm https://www.sound-au.com/articles/index.htm