Guest Post: Arduino Water Depth Monitor

Author: Nathan Mannes, ’19

With supplies from the Geology Department and with the advising of Andrew Wilson, we have created an Arduino-based water-depth monitor. The grey cone you see at the bottom of the photo is a sonar-device that measures how far the closest solid object in front of it is. That could mean a wall, but we intend to put it over a body of water, like Lyman Lakes, to measure its depth over a long period of time with little maintenance. Because it is solar powered, we can leave it outside and let it send readings on its own.

On the right side you see a 3G shield module (with the antennae) mounted on an Arduino. It uses mobile data to send readings over the internet. But it has to send data to somewhere, right? We are setting up a public-facing webserver so that we can keep track of this data long-term. Then, much like the water tower, we will always be able to check what the depth of the Lyman Lakes are. In the future, we intend to expand this to conduct other readings on the water, like its pH or temperature, or volume of flow.