Rain Drop Sensor Module

Raindrops Detection Sensor Module Rain Weather Module for Arduino, etc. Rain sensor can be used to monitor a variety of weather conditions and turned into several fixed output signal and Analog output.

It includes a printed circuit board (control 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 (or the more water), 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 5V.

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 through a potentiometer. The module is based on the LM393 op-amp.

Features:-

• The LM393, use of the wide voltage comparator
• Provide both digital and analog output
• Output LED indicator
• Compatible with Arduino
• TTL Compatible
• The sensor uses the high-quality FR – 04 double material, the large area of 5.5 * 4.0 CM
• Treatment of nickel plating and surface, have fight oxidation, electrical conductivity, and life has more superior performance
• The comparator output, signal clean, good waveform, driving ability is strong, for more than 15 mA;
• With potentiometer sensitivity adjustment
• The output format: digital switch output (0 and 1) and analog AO voltage output;
• Has a fixed bolt hole, convenient installation 

Specifications:- 

• Operating Voltage (VDC) : 3.3 ~ 5
• Voltage Comparator : LM393