Chapter 8. Taking Digital Inputs to the Raspberry Pi Zero
Here's what we will cover in this chapter:
- Interfacing push switches
- Interfacing toggle switches and setting debouncing
- Avoiding the floating states of the input line
- Interfacing a keypad with the RPZ
- Interfacing RTC to get accurate time
- Setting up interrupts on a toggle switch through GPIO
- Interfacing RFID tags with the RPZ
- Interfacing a GPS module with the RPZ
Introduction
In this chapter, we move from controlling external devices, such as motors and LEDs, to reading input from devices. The flexibility of the GPIO allows both, and the libraries we used previously to drive outputs work just as well for understanding device inputs.
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