So my next project is a simple pir system to guard my garden/driveway. The design and construction couldn't be simpler for the most part, but being outdoors all year round in the UK - well that is a new challenge for me.
I have so far, researched various approaches to coating boards/components with coatings, and I'm happy with plans so far.
However, where I am still in the dark, is what connecting wire and terminals to use. The arduino itself will be indoors, no problem. But both power lines (5-9v tbc) and signal lines (3.3v) will have to venture outdoors, service 6-12 pir sensors along a perimeter of maybe 12-20 meters.
Being in the UK,temperatures from -26 to +38 (max/min according to Wikipedia) in the shade. .. so I am thinking basic machine/hookup wire might not last too long.
As far as connections go, where my main wiring loop is spurred for individual PIR sensors, is another dilemma. I could glue/resin coat connections, making them at least semi-permenant. Yet I do recall some garden light kit from my childhood.. each light had a connection with 'snake teeth' that bit into the main cable so that you could position/reposition then at will. I've seen similar on components shops, manly for ribbon cable... but I'm sure these are not weatherproof! Any suggestions ??