I finished assembling the first prototype. All that’s left to do is hook up the MKR1500 microcontroller and continue working with the code. I’m still waiting on a fix for the Arduino board. In the meantime, I’ve tested to see if the box is really waterproof, so far no water has gotten into the interior. The silicone sealant does an excellent job. It isn’t designed for continuous underwater usage, but the device doesn’t need to be sitting in the water for more than a number of seconds at a time anyways.
I used some black twist ties I had leftover from another project to keep the sensor wires in their respective bundles. I also used white electrical tape to keep the big wires from getting in the way of the electronics which will be in the middle area. I marked the plastic caps of neutral solution from each of the sensors so that they don’t get mixed up.
It looks a bit messy right now, but once I get the MKR1500 wired up I’ll be able to bundle up more wires to give it an overall cleaner look.
H2OSupport 