“If you need a logger with a rugged waterproof housing, it’s still hard to beat the Dupont-jumper build released in 2016. However sometimes I just want a quick bare-bones unit for bookshelf test runs while I shake down a new sensor. I can whip up a breadboard combo in about twenty minutes, but they stop working if I bump one of the wires loose. I’ve lost SD cards from this half way through a long term test, and I’ve also run into issues with noise & resistance from those tiny breadboard contacts. To address this I’ve come up with a new configuration that uses a screw-terminal expansion shield originally intended for the Arduino Nano. This requires a modest bit of soldering, and after some practice, between 1-1.5 hours to finish depending on how many “extras” you embed into the basic three component core. In return for that time you get all the pins broken out, making this approach almost as flexible as a breadboard, and much more physically robust. Pop them into some pre-made boxes and these little guys qualify as deployable, at least for gentle environments.”
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