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Flying Fish MH Sensor

mh-sensor.jpg

This is a very cheap analogue board containing a comparator and and a pot to give both an analogue and digital (threshold) output.

Various sensors configurations can be found which include an LDR, NTC thermistor, and two resistive water/moisture detectors.

The water/moisture detectors utilise a 2 pin header which can allow us to reuse the comparator board for any particular device we have available. For example, the picture shows a flat style 10K thermistor along with the moisture detector kit.

Schematic

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