Arduino & Wearable Electronics Free Updated Sep 03, 2026

Smart Water Tank Level Controller with Automatic Pump Switch

Prevent water overflow and dry-run damage with contactless ultrasonic level sensing and relay pump control.

Project Overview

Automate home overhead water tanks with ultrasonic distance sensing, motor relay interlocks, and dry-run pump protection.

Features

  • Waterproof JSN-SR04T ultrasonic level sensor
  • Auto-start at <25% level and auto-cutoff at >95% capacity
  • Current sensor to detect dry-run pump spinning without water
  • Liquid Crystal I2C display with percentage volume bar