According to Pull-up Resistors - SparkFun Learn , pull up resistors make sure the default state of inputs to be HIGH which simply is [image] And on this tutorial for a 4 pins DHT11, it is wiring a pull-up resistor this way. [image] And from my understanding, in a schematic way [Schematic_DHT11…

Pull up resistor on DHT11

chung705 October 3, 2021, 12:02am 4

Thank you very much for the explanation

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