Chapter 3: Sensors, Actuators, and Embedded Systems
The chapter details the critical hardware components required for building Internet of Things (IoT) systems, focusing on sensors, actuators, and embedded systems. It elucidates the functionality and applications of various types of sensors and actuators, while also providing insight into microcontrollers and embedded boards that facilitate these components' integration. Furthermore, the chapter emphasizes the importance of interfacing techniques and communication methods involved in IoT applications.
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What we have learnt
- Sensors detect environmental conditions and convert them into electrical signals for interpretation by microcontrollers.
- Actuators execute physical actions based on commands from microcontrollers, enabling interaction with the environment.
- Microcontrollers, such as Arduino and Raspberry Pi, serve as the central processing units that coordinate sensor data and actuator commands.
Key Concepts
- -- Sensors
- Devices that detect and measure physical quantities from the environment, converting them into electrical signals for processing.
- -- Actuators
- Components that convert electrical signals into physical actions, enabling responses based on sensor data.
- -- Microcontrollers
- Compact integrated circuits designed for embedded applications, accounting for data processing, control logic, and sensor integration.
- -- Interfacing
- The process of connecting sensors to microcontrollers for data collection and application execution.
- -- Communication Methods
- Varied techniques like digital input/output and communication protocols (I2C, SPI, UART) for data exchange between sensors and microcontrollers.
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