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(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 five volts.
Features:
Adopts high quality of RF-04 double sided material.
Area: 5cm x 4cm nickel plate on side.
Anti oxidation, anti-conductivity, with long use time.
Comparator output signal clean waveform is good, driving ability, over 15mA.
Potentiometer adjusts the sensitivity.
Working voltage 5V.
Output format: Digital switching output (0 and 1) and analog voltage output AO.
With bolt holes for easy installation.
Small board PCB size: 3.2cm x 1.4cm.
Uses a wide voltage LM393 comparator.
Technical Specifications :
Operating voltage: 5V
Provide both digital and analog output
Adjustable sensitivity
Output LED indicator
Compatible with Arduino
TTL Compatible
Bolt holes for easy installation
3.2 cm x 1.4 cm x 1.0 cm
Package Content:
1 x Rain drop detection sensor module
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