DIY Depth Sensing
Nice discussion on envirodiy here of a Maxtobox-based design.
Another nice post on environdiy on evaluating their performance, here.
- A question I have, here: they consider the Onset logger to be the 'reference' ... but oughtn't we also to evalue its values? I like the idea of conductive screws as an 'absolute' external check on either sensor (though maybe that measurement mode is more complex than I realize).