Design Requests

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A probe + control system that allows one to present cut-in and cut-out temperature for a water circulation system. Could be Arduino-based to make it part of a larger automation system with multiple probes and control solenoids. The application is hydronic heating hot water circulation from an open source hydronic stove with a pipe-based heat exchanger. NPT pipe connections are used for the probe insertion point, or the probe can go on the outside of a pipe so it's non-invasive. See current sytem design at