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Sensor Calibration

Soil moisture (SOILCAP-V20)​

  1. Install sensor in pot or field location representative of the area.
  2. Dry baseline: power sensor, log ADC/reading in air (no contact with soil). Record as dry_value.
  3. Saturated baseline: insert sensor in distilled water, record wet_value.
  4. Map reading to percent: moisture% = (reading - dry_value) / (wet_value - dry_value) * 100.
  5. Choose thresholds (example): water when < 30%, stop at > 60%.

Notes: Soil composition affects readings — calibrate for each soil type and probe depth.

Flow sensor​

  • Calibrate pulses per liter: run known volume through system, count pulses, compute pulses_per_liter.

Temperature & Humidity (BME280)​

  • Verify with a reference thermometer/hygrometer and adjust software offsets if necessary.

TODO: Add calibration scripts and sample CSV outputs in data/calibration/.