As we conclude, here is a list of questions for you to test your knowledge of this chapter's material. You will find the answers in the Assessments section of the book:
- Can you list two differences between a DHT11 and DHT22 temperature and humidity sensor?
- Why is the external 10kΩ pull-up resistor optional in our DHT11/22 circuit?
- Describe the basic electronic principle used with an LDR to measure light.
- How can you make an LDR more or less sensitive to certain lighting conditions?
- You have created an LDR circuit and calibrated the Python code. Now, you change the LDR and find that the voltages readings and in-code trigger point behave slightly differently. Why?Â
- Why does placing two wires in water work as a basic moisture detector when used with a voltage divider and ADS1115 circuit?
