Raindrop Detection Sensor Module

Description

The raindrop sensor module is used for rain detection. It is also for measuring rainfall intensity. The module includes a rain board and a control board that is separate for more convenience. It has a power indicator LED and an adjustable sensitivity though a potentiometer.

The module is based on the LM393 op-amp. It includes a printed circuit board that “collects” the raindrops. As raindrops are collected on the circuit board, they create paths of parallel resistance that are measured via the op-amp. The lower the resistance, the lower the voltage output. Conversely, the less water, the greater the output voltage on the analog pin. A completely dry board, for example, will cause the module to output five volts.

Specifications: 

Operating voltage: 5V

Output LED indicator

Provide both digital and analog output

Bolt holes for easy installation

Compatible with Arduino

Adjustable sensitivity

TTL Compatible

Pin Description

Vcc

GND

DO: digital output

AO: analog output

Packages Includes:

1 x The raindrop sensor module set

5 x Female/Female jumper wires