This Raindrop sensor module allows you measure moisture via analog output pins and it provides a digital output when a threshold of moisture is exceeded. The module is based on the LM393 op amp.
It includes the electronics module and a printed circuit board that “collects” the rain drops. As rain drops 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. Connected to 5 v power supply power lights, no water droplets on induction plate, the DO output for the high level, switch lights out, a drop of water drops, the DO output for the low level, switch indicator,brush away the water droplets, return to again, the output high level state. – AO analog output, can be connected to the microcontroller AD mouth drops of rainfall in the above size. – DO TTL digital output can also be connected microcontroller detecting whether it will rain.
Package included:
1 x Rain Sensor
1 x Rain Module
5 x Dupont Cables
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