The raindrops detection sensor module detects water droplets landing on its immediately changes its output voltage. The rain drop sensor works by measuring the conductance between parallel traces on the collector surface, lowering resistance and raising the analog output signal.
The rain sensor board houses an voltage comparator, which fires a clean digital low signal the moment rainfall crosses a set threshold. The sensor board surface oxidises after months of outdoor exposure, which gradually raises the base resistance and makes the sensor falsely report rain in dry conditions. The rain sensor module analog output lets you compensate for this drift in firmware rather than replacing the board.
Hobbyists making automatic rain detector window closers, and makers prototyping outdoor IoT alerts all reach for this rain detector module. StemVolt provides this sensor with trusted quality, ensuring reliable performance and easy usability.
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Features:
- Analog output tracks rainfall intensity continuously giving fine-grained readings between dry and wet
- Dual output type of analog and digital lets use one board for two different detection tasks
- Operating voltage of 3.3V to 5V DC allows direct connection logic systems
Technical specifications:
| Specification | Details |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Output Type | Analog and Digital |
| Voltage Comparator | LM393 |
| Driver Size (L x W x H) | 32 x 15 x 9 mm |
| Collector Board Size (L x W x H) | 54 x 40 x 1.5 mm |
Applications:
- An automatic rain detector window system uses this module to trigger a servo that closes the window
- A school weather station connects the raindrops detection sensor module to log daily precipitation events
- A rain sensor Arduino project monitors the digital output pin and sends an alert through a GSM module
Package includes:
- 1 x Raindrops Detection Sensor Module
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