DEMO MODE (Mock Telemetry)
Hardware Advisory: Running in Demo Shell Mode. Telemetry shown is simulated for interface verification until live ESP32 DevKit V1 telemetry is received by the backend.
Backend Configuration Status →

Sensor Telemetry & Hardware Status

Real-time analog-to-digital conversions and digital bus readings from ESP32 DevKit V1.

DEMO CALIBRATION VIEW

Engineering Guideline: Raw ADC vs Conversion

As specified in the system brief, the initial hardware readings are raw ADC values (0–4095 on ESP32 12-bit ADC1), not fabricated moisture percentages. In-soil calibration across dry soil vs wet field capacity is required before automated thresholds are engaged.

Capacitive / Resistive Soil Moisture

GPIO34 (ADC1_CH6)Type: Analog ADC
Adequate Moisture
Current Telemetry
2840/ 4095 ADC
Approx 69% of ADC Range

Measures volumetric soil water content via dielectric permittivity / resistance change.

Calibration Benchmark: Raw value decreases as moisture increases on capacitive probes. Dry air: ~3200-3800, Saturated water: ~1200-1500.

Submersible Water Depth Sensor

GPIO35 (ADC1_CH7)Type: Analog ADC
Tank Level OK
Current Telemetry
1950/ 4095 ADC
Approx 48% of ADC Range

Monitors the water reservoir depth to enforce hardware pump interlock protection.

Calibration Benchmark: Dry sensor reads ~0-200. Submerged reads ~1800-3000. Critical cutoff: Stop pump if reading < 500.

DHT11 Climate Module

GPIO27 (Single-Bus)Type: Digital Single-Bus
Nominal Climate
Current Telemetry
Air Temperature

24.8 °C

Relative Humidity

62 %

Digital temperature and relative humidity sensor with internal NTC thermistor and capacitive humidity element.

Calibration Benchmark: Factory calibrated digital output. Range: 0-50°C (±2°C), 20-90% RH (±5%).

Light Dependent Resistor (LDR)

GPIO32 (ADC1_CH4)Type: Analog ADC
Daylight Ambient
Current Telemetry
1420/ 4095 ADC
Approx 35% of ADC Range

Photoresistor voltage divider indicating ambient solar illumination on the farm canopy.

Calibration Benchmark: Darkness: ~3500-4095. Direct Sunlight: ~200-800. In-between: Day ambient.

Passive Infrared (PIR) Motion Detector

GPIO26 (Digital Input)Type: Digital GPIO
Pending Field Test
Current Telemetry
LOW (No Motion)Digital Pin 26

Pyroelectric infrared sensor detecting field motion, unauthorized access, or animal intrusion.

Calibration Benchmark: Fixed pin assigned to GPIO26. Wiring and sensitivity potentiometer adjustment pending physical hardware bench test.