AVR Workshop

3

Getting and Displaying Input

AVR microcontrollers can process input from the outside world and react with output, which offers huge potential for interactive projects—for example, those that react to the surrounding temperature. In this chapter, you’ll program ATtiny85s and ATmega328P-PUs to detect input signals from external devices and put them to work.

In particular, you will:

• • Learn about digital inputs and buttons.
• • Make decisions with if...else and switch...case statements.
• • Use seven-segment LED displays to make a digital counter.
• • Make a single-cell battery tester.
• • Learn about the TMP36 temperature sensor.
• • Make a digital ...