Rain Drop Sensor

₹75

01 — About

What it does

The Rain Drop Sensor detects water and rainfall through exposed PCB traces that change resistance when wet. An affordable solution for weather monitoring, smart irrigation, and automated window/skylight systems.

Key features

Rain and water detection via conductive PCB surface
Analog output proportional to water coverage
Digital output with adjustable threshold
Adjustable sensitivity via onboard potentiometer
LED indicator for detection status
Compact module with separate detection board
3.3V-5V operation compatible with all microcontrollers

Good to know

Keep sensor surface clean for accurate detection
May corrode over extended outdoor use
Not for submersion – surface water detection only
Calibrate threshold for your expected rainfall intensity
Shield from direct water spray to avoid false triggers

02 — Datasheet

Specifications

Sensor Type: Resistive (conductive traces)
Operating Voltage: 3.3V – 5V
Output: Analog + Digital
Detection Area: Approx 40mm x 50mm
Sensitivity: Adjustable via potentiometer
Indicator: Power LED + Detection LED
PCB Size: Control: 15mm x 20mm, Sensor: 40mm x 50mm