I would like to know how to construct a temperature sensor which senses the temperature and a humidity sensor which senses the humidity inside a green house .
I had also posted a request for the construction of automatic sensor tap.By automatic sensor tap I meant the watertaps which works automatically when hand is placed underneath it.
I had also posted a request for the construction of automatic sensor tap.By automatic sensor tap I meant the watertaps which works automatically when hand is placed underneath it.