Chapter 21 Hygrothermograph DHT11
In this chapter, we will learn a commonly used sensor, Hygrothermograph DHT11.
Project 21.1 Hygrothermograph
Hygrothermograph is an important tool in our life to remind us of keeping warm and replenishing moisture
in time. In this project, we will use RPi to read temperature and humidity data of DHT11.
Component List
Component knowledge
Temperature & Humidity Sensor DHT11 is a compound temperature & humidity sensor, and the output digital
signal has been calibrated inside.
It has 1S's initialization time after powered up. The operating voltage is within the range of 3.3V-5.5V.
SDA pin is a data pin, which is used to communicate with other device.
NC pin (Not Connected Pin) are pins found on various integrated circuit packages. Those pins have no
functional purpose to the outside circuit (but may have unexposed functionality). Those pins should not be
connected to any of the circuit connections.
To Next Page
Loading...
Need help?
General