in this blog i am showing how to build your own room temparature and humidity monitering system…(a device that measures the humidity data and temperature data and logs it and displays it on a LCD screen)this system for somany applications like incubator,home automation etc….
so lets gets started
arduino uno r3
DHT11 SENSOR MODULE
16*2 lcd module
330 ohm resistor
jumper wires
first lets test the dht11 module
The DHT11 is a temperature and humidity sensor on one board, it easy to use with the arduino
connect the arudino to the dht11 as follows
5V — VCC of the sensor(2nd pin)
Gnd — Gnd of the sensor(3rd pin)
D7 — Signal or data pin of the sensor(1st pin)
after connecting upload the code and open serial moniter
if everything works perfectly lets make our display
follow the circuit diagram
circuit diagram
again if everything works as expected lets move to soldering
thats it…..
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