Chapter 3: Turning an LED On or Off Using a Push Button
In this chapter, we will review and practice how to turn an LED on or off using a push button connected to a microcontroller board. A push button is a practical component that acts like a switch and is used for closing or opening an electronic circuit. We can use them to initialize or activate a process in a microcontroller board. Consequently, the input data provided by a push button is important in many microcontroller applications that require human intervention. Specifically, we will cover the following main topics in this chapter:
- Introducing push buttons
- Understanding electrical noise from push buttons
- Connecting an LED to a microcontroller board port and using an internal pull-up resistor
- Testing out the push button
By the end of this chapter, you will have learned how to connect a push button to the Curiosity Nano and the Blue Pill microcontroller boards, as well as how to program the push button...
