Yes, there is a chance to realize one simple non-arduino project of a forgetful plant waterer! If you are looking for this option, digital output of the module must be linked to the little circuit ...

This humidity sensor consists of 2 copper conductors that are located at small distance from each other. The relay switches as soon as the ... You can use other sensors like LDR or NTC instead of the ...

The circuit shown in the figure measures relative humidity in air at the low temperatures found in applications like cold storage of food items and greenhouses.