Recall & Review
beginner
What is the main purpose of the DHT11 and DHT22 sensors?
They measure humidity and temperature in the environment.
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beginner
How do you connect a DHT sensor to an Arduino board?
Connect the sensor's power pin to 5V, ground pin to GND, and data pin to a digital input pin on the Arduino.
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beginner
Which Arduino library is commonly used to read data from DHT11/DHT22 sensors?
The DHT sensor library by Adafruit is commonly used.
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intermediate
What is the difference between DHT11 and DHT22 sensors?
DHT22 is more accurate and measures a wider range of humidity and temperature than DHT11.
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intermediate
Why do you need to add a delay between readings when using DHT sensors?
Because the sensor needs time to stabilize and provide accurate readings; reading too fast can cause errors.
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Which pin on the Arduino should the data pin of a DHT sensor be connected to?
✗ Incorrect
The data pin connects to a digital input/output pin to send and receive data.
What is the typical delay time recommended between DHT sensor readings?
✗ Incorrect
A delay of about 2 seconds is recommended to allow the sensor to stabilize.
Which sensor is more accurate and supports a wider range: DHT11 or DHT22?
✗ Incorrect
DHT22 is more accurate and supports a wider range of humidity and temperature.
Which Arduino library is commonly used to read DHT sensors?
✗ Incorrect
The DHT sensor library by Adafruit is designed for these sensors.
What does the DHT sensor measure?
✗ Incorrect
DHT sensors measure humidity and temperature.
Explain how to set up and read data from a DHT11 or DHT22 sensor using Arduino.
Think about wiring, library usage, and timing.
You got /5 concepts.
Describe the differences between the DHT11 and DHT22 sensors and when you might choose one over the other.
Consider accuracy, range, and cost.
You got /5 concepts.