From a little board.
To a bigger picture.
In 2021, IGTech connected an ESP32 at home to a custom dashboard. Electrical readings became charts, consumption estimates, and downloadable reports.
Built around a small hosting budget, it was an exercise in making real measurements useful. The project has since been archived and its Firebase project removed. The lessons remain.
Read the engineering case study ↗ESP32 · home readings
Express API · Firestore
Next.js · charts & reports