Sample project · ECE
IoT smart irrigation
Soil-moisture sensors switch the pump on only when the field needs water, with a live dashboard.
Try it live
A sample our team built to show the standard of a delivered project, not client work. The demo simulates the sensor readings in your browser (a real build reads them from the ESP32). The control logic, thresholds and alerts are the same as the real system.
- Soil moisture
- 48%
- Temperature
- 29.0 °C
- Humidity
- 58%
- Tank
- 80%
Controls
Automatic: pump on below 35%, off at 60%. Water used: 0 L
Alerts
No alerts. Try Manual with the pump off, or let the tank run dry.
What it solves
Fixed watering schedules waste water and still let crops dry out on hot days. The project measures soil moisture and switches the pump automatically, with a dashboard and alerts for the farmer.
Features
- Soil moisture, temperature and humidity readings
- Automatic pump control with on/off thresholds
- Manual override from the dashboard
- History charts and water usage
- Alerts when moisture stays low or the tank runs dry
How it works
- Sensors (soil moisture, DHT22)
- ESP32 reads every few seconds
- Threshold logic switches the relay
- Readings published over MQTT
- Dashboard and alerts
Tech stack
- ESP32
- Capacitive soil moisture sensor
- DHT22
- Relay + pump
- MQTT
- Node-RED dashboard
IoT & embedded · ECE
Report, slides and viva prep
Every project ships with a full report, a presentation deck and viva preparation. Here is a look at this one.
Contents
IoT smart irrigation
- Abstract
- 1. Introduction
- 2. Literature survey
- 3. Block diagram and components
- 4. Circuit design
- 5. Firmware and control logic
- 6. Dashboard and communication (MQTT)
- 7. Results
- 8. Conclusion and future scope
- References
IoT smart irrigation
Control logic
- Pump on below 35% moisture
- Pump off above 60% (hysteresis)
- Alert if dry for 30 minutes
Final year project review · Project Squad sample
Viva questions we prepare you for
- Why use two thresholds (hysteresis) instead of one?
- Why a capacitive soil sensor instead of a resistive one?
- What happens to the pump if the Wi-Fi connection drops?
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