Developer uses camera and .NET to integrate 1970s power meter lacking digital interface.

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A developer faced the challenge of integrating a mechanical power meter from 1975 into a software system, as the meter lacked any digital interface. In Germany, the rollout of modern smart meters has been slow, and modifying the existing meter was not an option. The developer chose a non-invasive solution using a camera to capture images of the meter's display for optical character recognition. The system employs an ESP32-based camera module and a .NET 10 service to ingest and process the images asynchronously.

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