AM2302 sensor (Failed to read from DHT sensor!)

[marvin7]

@mnaveed1

Secondly, is it possible to use any other pin assignment other then pin 4 (pin 2 on esp8266) ?

Sure! You can use almost every GPIO, with some exceptions an warnings. Look at great post @wanek has prepared for us:

ESP8266 GPIO pins info, restrictions and features

hi blynkers! the esp8266 mcu is widely used in iot projects. however, most gpio pins on this mcu have special / multiple functionality and are not safe to use in all circumstances. these “features” are still not well documented and not explained in a friendly manner for newbies. i see lots of cases when the “issues” are simply caused by not knowing which pins to use in which case. [esp8266 pin features] here is a basic table for startup. i’ve collected the info from various sources on the i…

@mnaveed1

But I do get voltage at pin number 2

What you mean “voltage”? It says nothing. A voltage might be existent on damaged pin/esp too. Did you get some pulses?