Project 45 · Sensor Catalog (Vol III)

Remote Plant Watering (Wi-Fi pump)

Build a smart irrigation system that monitors soil moisture and lets you water your plants from any smartphone on your Wi-Fi network.

Advanced 100 min 10 components
Remote Plant Watering (Wi-Fi pump) wiring diagram

What you'll learn

  • Understand how to interface an Arduino with the ESP-01 Wi-Fi module using AT commands.
  • Implement a power-cycling technique for analog sensors to prevent electrochemical corrosion.
  • Control high-power DC devices like pumps using a relay circuit safely.
  • Create a basic local web server to display sensor data and receive remote control inputs.

What's in the kit

  • Arduino UNO R3
  • ESP-01 Wi-Fi Module
  • Capacitive Soil Moisture Sensor
  • 5V Single Channel Relay Module
  • Submersible Water Pump (6V)
  • 1k Ohm Resistor (for voltage divider)
  • 2k Ohm Resistor (for voltage divider)×2
  • 4xAA Battery Holder (for Pump)
  • Jumper Wires (M-M and M-F)×20
  • Breadboard (Full Size)

Protocol: analog