alfon1917

I actually found the site very likeable.

I totally agree about using glue to strengthen it.Two additional notes:- skipping the saran wrap and allowing the cardboard to stick to the bottom and top pieces would immensely increase the rigidity.But...- There is such a thing as TOO MUCH rigidity. I assume that when performing tricks, the board will be subjected to very strong stresses. In such cases, some elasticity is beneficial. Total lack of it might lead to the board breaking for being unable to flex.

Great instructable.I do keep wondering, however: will it still be food-safe with the glue? And will the lamination hold up if used for cooking?

Have you tried removing the delay (100);line and moving the linedigitalWrite(moisturePowerPin, LOW);directly after the analogRead line?Doing so should further diminish the power consumption / corrosion rate without affecting the measurements

You are probably referring to osmosis. However, osmosis only applies to non-electrolytic solutions. cells will NOT 'attempt to balance the electrolyte gradient' (there is no gradient here either, BTW).