Basva's Farm (Smart Soil Moisture Automated Irrigation System)
Source: Stemoto Original
Construct an automated farm plot model for onion crops. A capacitive soil moisture sensor monitors soil dryness; when dry, the ESP32 automatically activates a 3V water pump to irrigate crops.
Categorisation
Props & Materials Required
- •Mini crop field container with soil & toy crops (Onion, Maize)
- •Capacitive corrosion-resistant soil moisture sensor probe
- •3V mini DC submersible water pump & relay module
- •Water reservoir tank & drip irrigation tubing
- •ESP32 controller board with 0.96-inch OLED display
- •DFPlayer Mini MP3 module + 3W speaker
Step-by-Step Instructions
Insert Soil Probe in Dry Field
Insert moisture probe into dry soil in the farm plot.
Read Soil Moisture Level
OLED screen displays 'Moisture: 18% (DRY!)'.
Automated Water Pump Activation
ESP32 triggers relay switch — 3V water pump switches ON! Water drips onto crop roots through drip tubing.
Irrigation Shutoff
As soil absorbs water, moisture rises to 65%. Pump automatically switches OFF! Speaker: 'Soil adequately watered! Drip irrigation complete!'
Why It Works & Notes
Basva's Farm details onion farming steps (ploughing, sowing, weeding, irrigation, harvest). Building an automated soil-moisture drip irrigation system introduces smart agriculture technology that conserves water.
Looking Around Chapter 14: Basva's Farm | STEM Tech: Capacitive Soil Moisture Sensing & Automated Relay Water Pump Actuation — precision drip irrigation systems.