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Lesson 18 Temperature & humidity sensor DHT-11
Overview
In this lesson, you will learn how to use a DHT11 Temperature and Humidity Sensor. It's
accurate enough for most of projects that need to measure humidity and temperature.
Components Required
Name Qty Name Qty
UNO R3 or MEGA 2560 1 DuPont Wire 20
DHT11 Temp and Humi Module 1 10KΩ Potentiometer 1
Component Introduction
The DHT11 Sensor features a temperature & humidity sensor complex with
a calibrated digital signal output. The sensor includes a resistive-type humidity
measurement and an NTC temperature measurement.
Connection Schematic
VSS
VDD
V0
RS
RW
E
D0
D1
D2
D3
D4
D5
D6
D7
A
K
AREF
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
GND
SDA
SCL/RESET
3V3
5V
A0
A1
A2
A3
A4
A5
GND1
GND2
VIN
Analog Input
Digi tal Input/Output
ARDUINO-NOHOLE
1
2
3
VCC
OUT
GND
DHT11
Potenti
ometer
UNO R3/
Mega 2560
LCD1602
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