Chapter 4. Getting started with embedded systems
This chapter covers
- Understanding the various categories of embedded systems
- An introduction to working with the Raspberry Pi
- An introduction to setting up and using Node.js for IoT prototyping
- Learning to connect sensors and actuators using GPIOs
As we discussed before, there are two broad categories of physical objects on the Web of Things: tagged objects and connected objects. The first category comprises various tagging technologies that are attached to a product, such as barcodes, QR codes, NFC or RFID tags, and so on. In this case, objects aren’t connected directly to the web, only passively, because there’s a need for another device or application to interact with the product. Connected ...
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