Onion Storage Health Monitor

The problem

Onions rot from inside the pile outward. By the time it's visible, a serious share of the harvest is gone, and the monitoring kit that would have caught it early costs more than a small farmer's crop is worth.

What I built

I built a low-cost sensor unit on an ESP32 with environmental and gas sensors, streamed the readings into a dashboard, and trained a Scikit-learn model to convert them into something useful in the field: roughly how long this batch will hold, and when to sell rather than store.

• Custom sensor hardware measuring temperature, humidity, and spoilage gases
• Dashboard showing current storage conditions
• Scikit-learn model predicting remaining shelf life
• Complete path from hardware to backend to database to prediction