Cattlepi

Abstract

1. Introduction

Insert the card into the RPi and watch it boot. On first boot the loader will update the images and will boot the default configured image (usually the latest raspbian + any package updates) You can learn more details about the API itself or how to get your own API key at https://cattlepi.com

A lot of Raspberry Pi projects treat their software as pets. A lot of time is put into configuring and tweaking the setup. If the hardware dies or the SD card wears out it can be very challenging or time consuming to rebuild/replicate the software setup. Normally this is fine for a single DIY and/or educational project. But it's hardly practical or scalable in other cases. Our goal is to automate both the initial setup and the update process for multiple Raspberry Pi nodes. We want to turn your pet project into a cattle project.

Using the builder in this project you can create and use two images: an initfs image and a rootfs image. The (initfs) is written on the an SD card boot partition. This image contains code to both self-update and to download the final root file system (rootfs) used by the RPi. The boot code communicates with with an external API endpoint, to retrieve the configuration associated with your RPi, as well as to figure out where the image files are located and download them (i.e. both the boot image and the rootfs image can freely change between boots). As an optimization, the images are cached on the SD card boot partition to make subsequent boots faster (and to avoid any unnecessary network traffic).

2. Objective

effortlessly boot, configure, update and monitor your raspberry pi :cloud:

This project demonstrates how Shell, Raspberry Pi can be applied to a real-world Internet of Things (IoT) problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Linux / macOS terminal or WSL on Windows
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/cattlepi/cattlepi.git
cd cattlepi

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add a mobile dashboard using Blynk or Firebase
• Store readings in a cloud database for history charts
• Add alerts via SMS / Telegram when thresholds are crossed

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which microcontroller / board and sensors are used and why?
2. How does the device send data (Wi-Fi, MQTT, HTTP, Bluetooth)?
3. Where is the sensor data stored and visualised?
4. How is power consumption managed?
5. How would you secure the device and its communication?

9. Source Code & License

This project is developed by cattlepi and published on GitHub under the Apache License 2.0. Please follow the license terms and credit the original author when you use or modify this code.