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Modulo sensor de humedad basado en el HR202 con LM393 para ajustar el nivel threshold "1" y habilitar un relevador para control o usar microcontrolador para tomar acciones de control. Con el potenciometro se ajusta el valor de humedad relativa en % (pej 60%) deseada para actival la etapa de control.
Humidity detection, humidity sensor, ambient humidity detection
Module features:
1, using high quality HR202 humidity sensor;
2, the comparator output, the signal is clean, the waveform is good, the driving ability is strong, more than 15mA.
3, with potentiometer to adjust the temperature detection threshold
4, working voltage 3.3V-5V
5, output form: digital switch output (0 and 1)
6, with fixed bolt holes for easy installation
7, small board PCB size: 3.2cm x 1.4cm
8, using a wide voltage LM393 comparator
Wiring instructions (3-wire system)
1 VCC external 3.3V-5V
2 GND external GND
3 DO small board digital output interface (0 and 1)
Module instructions
1. The humidity sensor module is sensitive to environmental humidity and is generally used to detect the humidity of the surrounding environment;
2. through the adjustment of the potentiometer, you can change the threshold of humidity detection (ie control humidity value), if you need to control the ambient humidity is 60 %, the module is adjusted to the green light in the corresponding ambient humidity, DO is output high power Flat, below this set humidity value, the output is high level, the green light is not bright;
3. The DO output terminal can be directly connected to the single-chip microcomputer, and the high-low level is detected by the single-chip microcomputer, thereby detecting the humidity change of the environment;
4. The DO output terminal can directly drive the relay module of the store, so that a humidity switch can be formed to control the related equipment to work in a suitable environment
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