OpenAmber: Open-Source ESP32 Heat Pump Controller With W5500 Wired Ethernet
OpenAmber replaces the Itho Amber heat pump controller with an ESP32 running ESPHome; the ESP32-P4 build uses a WIZnet W5500 for wired Home Assistant control.
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Components
Hardware components
WIZnet - W5500
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Project description
Overview OpenAmber is open-source firmware that replaces the factory Windows CE controller inside an Itho Daalderop Amber heat pump with an ESP32 running ESPHome. Built by the maker behind the GitHub project Jordi1990/openamber, it turns a closed, screen-bound heat pump controller into a fully observable and controllable device inside Home Assistant, the popular open-source home automation platform. The heat pump's inside and outside units speak Modbus over an RS485 serial bus; OpenAmber reads and writes those registers directly, exposing temperatures, pump states, compressor frequency…
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