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Repurposed waterbed heater to warm seeds in Jiffy trays.

A project log for WiFi Waterbed and Freezer Temperature Control

The old mechanical thermostat failed ON so I replaced it with a WiFi NodeMCU system with web page HMI for control/monitoring.

nodemcu12ecanadanodemcu12ecanada 04/30/2023 at 16:360 Comments

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