3V Water-Level Detector

Originally, this circuit was used to sense a low-water level in a Christmas tree stand, but the circuit can be use
3V Water-Level Detector - schematic

d as a water-level detector for pump controls, water sensors (for garden and lawn applications), etc. A comparator and probe setup with a Linear Technology LTC1040CN comparator drives a 2N3906, which switches a tone generator. Sampling occurs every 20 seconds, which minimizes current drain. A pair of dry cells will power the circuit for several months.

Recommended videos

  • water level detection for overhead tank
    Duration: 5:30.
  • Make a Water Level Indicator at Home ( Hindi / Urdu )
    Duration: 4:20.
  • How to make Water level inductor_simple way_(At Home) made water level inductor[project]
    Duration: 13:49.