Technology stack

As explained in Build Your Own Robot: Using Python, CRICKIT, and Raspberry Pi

A hardware and software stack is a layered model of the hardware and software components that together provide a computing system's functionality.

A technology stack is a layered model of the hardware and software components that together provide a robot's functionality. Linux, Python, and reusable software libraries combine with physical components to turn user requests into movement, sensing, or interaction. section 1.3.1

A robot project can cross several stack layers:

• User interaction: a shell, web interface, keyboard, or joystick supplies movement or control requests. section 4.3 section 6.1
• Software and network layer: Linux, Python, libraries, Wi-Fi, and Ethernet carry commands between users and the robot. section 1.3.1 section 5.1
• Control layer: a Raspberry Pi communicates with a CRICKIT board, which sends signals to DC motors or other devices. section 4.3 section 3.2
• Sensing and physical layer: cameras, servo motors, wheels, and controllers provide movement, positioning, and visual input. section 8.1 section 10.1

From request to robot movement

A shell command runs on the Raspberry Pi, communicates with the CRICKIT board, and causes the DC motors to move. The same layered path can begin with a web button, keyboard input, or joystick request transmitted over Wi-Fi or Ethernet. section 4.3 section 6.1 section 7.1

Perception-driven behavior

A camera captures a live video feed while the robot travels along a controlled track. When matching QR code imagery is detected, the system stops the DC motors. section 10.1

Figure 4.2 Hardware stack: the robot shell controls the DC motor through the CRICKIT board.

Use the hardware-stack diagram to trace commands from the robot shell through the Raspberry Pi and CRICKIT board to the DC motor. section 4.3

How Build Your Own Robot: Using Python, CRICKIT, and Raspberry Pi covers it

How deep it goes

Maps concrete signal paths among components and interfaces, while deferring detailed assembly and configuration to dedicated guides.

Examples

Uses robot shells, web controls, keyboards, joysticks, cameras, servo motors, DC motors, and QR-code detection as concrete stack configurations.

What you can do after

Operate/configure robot interfaces and connections that carry commands from users or cameras to motors and other physical components.

How it connects

Connects Linux, Python, software libraries, Raspberry Pi, CRICKIT, DC motors, cameras, web applications, Wi-Fi, Ethernet, and joysticks.

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Also explained in

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  React in DepthA technology stack is the set of programming languages, frameworks, libraries, tools, and infrastructure used to build and operate an application.
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  Coding with AIA tech stack is the set of technologies selected to build and operate a software application.
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  Quantum Programming in DepthA software stack is a layered collection of software components that collectively supports application execution on a computing platform.
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  Bootstrapping Microservices, Second Edition: With Docker, Kubernetes, GitHub Actions, and TerraformA technology stack is the combination of tools, software, frameworks, and other technologies used to build an application or service.

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Related concepts

• microservice architectureused by · Microservice architecture is a software architectural style that organizes an application as independently deployable services with focused responsibilities that communicate through defined interfaces.
• Reactuses · React is an open-source JavaScript library for building user interfaces from declarative, reusable components.
• serviceused by · A service is a capability or activity provided by an entity to meet the needs of users or other components.
• frameworkuses · A software framework is a reusable structure that provides components, conventions, services, or extension points for building applications or other software systems.

This explainer was generated by Manning's knowledge graph from the text of Build Your Own Robot: Using Python, CRICKIT, and Raspberry Pi. The section links point to the parts of the book it draws on.