Internet of Things with Python

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1. As an effect of using a pull-up resistor with a pushbutton, we will read the following value when the pushbutton is pressed in the GPIO pin to which it is connected:
   1. A low value (0V).
   2. A high value, that is, the IOREF voltage.
   3. A value between 1V and 3.3V.
2. As an effect of using a pull-up resistor with a pushbutton, we will read the following value when the pushbutton is released in the GPIO pin to which it is connected:
   1. A low value (0V).
   2. A high value, that is, the IOREF voltage.
   3. A value between 1V and 3.3V.
3. If we check a pushbutton status by reading the GPIO pin value to which it is connected with polling, the loop runs every 0.5 seconds and the user keeps the pushbutton pressed for 3 seconds:
   1. The code will behave as if the pushbutton ...