Questions

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:

1. Can a PIR sensor detect the direction that an object is moving?
2. What are some factors that can affect the measurement accuracy of an ultrasonic distance sensor?
3. How does the output of a latching or non-latching Hall-effect sensor differ from the output of a ratiometric Hall-effect sensor?
4. In relation to this PiGPIO function call, callback = pi.callback(GPIO, pigpio.EITHER_EDGE, callback_handler), what does the pigpio.EITHER_EDGE parameter mean?
5. In a 5-volt to 3.3-volt resistor-based voltage divider consisting of a 1k Ω and 2k Ω resistor, why is important to connect the two resistor values the correct way around in a circuit?
6. Both the HC-SR04 ultrasonic distance sensor and the HC-SR501 PIR sensor were powered using 5 volts connected to their respective Vcc pins. Why did...