is DHT11 an analog sensor?
It is said in the video that Arduino will take analog data from DHT11 and gives to Arduino. According to Datasheet of DHT11, it is digital sensor sending the data of temperature and humidity in 40 bits or 5 bytes format. Moreover if we connect a DHT11 to any digital pins then also it works properly. So how can we say DHT11 as an analog sensor?
According to me, for this tutorial LM35 or simple potentiometer is good and more relevant example than this one.
Arduino Analog-to-Digital-Conversion 01-02 min 10-20 sec
For temperature readings, it is using NTC thermistor and for humidity it is using an air capacitor. You can get same output using digital pin also. The circuit incorporates both analog and digital techniques.