Linux, DevOps, AI/ML, AIOps and electronics — by Ashish Disawal.https://prahari.nethttps://prahari.net/blog/giving-my-robot-eyes-hp-w300-camera-on-arduino-uno-q-s-linux-sidehttps://prahari.net/blog/giving-my-robot-eyes-hp-w300-camera-on-arduino-uno-q-s-linux-sideIn the last post, I gave the robot its first sense — ultrasonic distance via the MCU.Sun, 12 Apr 2026 00:00:00 GMTarduinouno-qcameraopencvPythonqualcommroboticselder careComputer Visionhttps://prahari.net/blog/giving-my-robot-its-first-sense-hc-sr04-ultrasonic-on-arduino-uno-qhttps://prahari.net/blog/giving-my-robot-its-first-sense-hc-sr04-ultrasonic-on-arduino-uno-qIn the last post, I got the Arduino UNO Q working from the command line — blink LED, SSH, deploy apps.Wed, 01 Apr 2026 00:00:00 GMTarduinouno-qhc-sr04Ultrasonicsensorszephyriotroboticselder carehttps://prahari.net/blog/arduino-uno-q-is-not-a-regular-arduino-what-i-learned-the-hard-wayhttps://prahari.net/blog/arduino-uno-q-is-not-a-regular-arduino-what-i-learned-the-hard-wayIf you just got an Arduino UNO Q and tried to use it like a classic Arduino, you probably hit a wall. I did. Here's the story of how Serial.println()...Sun, 29 Mar 2026 00:00:00 GMTarduinouno-qqualcommcliembedded linuxiotroboticselder carehttps://prahari.net/blog/machine-learning-basics-improving-model-performance-with-feature-engineeringhttps://prahari.net/blog/machine-learning-basics-improving-model-performance-with-feature-engineeringWelcome back to our Machine Learning Basics series! In our previous post, we built a simple linear regression model that achieved an R-squared score of...Thu, 02 Oct 2025 00:00:00 GMTMachine LearningPythonData Sciencehttps://prahari.net/blog/machine-learning-basics-building-your-first-simple-linear-regression-modelhttps://prahari.net/blog/machine-learning-basics-building-your-first-simple-linear-regression-modelWelcome to the first post in our Machine Learning Basics series! In this tutorial, we'll dive into one of the most fundamental algorithms in machine...Sun, 21 Sep 2025 00:00:00 GMTMachine LearningPythonData Sciencehttps://prahari.net/blog/3-nicegui-weather-app-displaying-weather-datahttps://prahari.net/blog/3-nicegui-weather-app-displaying-weather-dataWelcome to the final post of our Creating a Weather App in NiceGUI series!Tue, 22 Oct 2024 00:00:00 GMTProgrammingPythonNiceGUIhttps://prahari.net/blog/2-nicegui-weather-app-layout-and-stylinghttps://prahari.net/blog/2-nicegui-weather-app-layout-and-stylingNow that we’ve got the basic setup of our NiceGUI project in place, it’s time to build the foundation of our weather app. In this post, we’ll create the...Mon, 21 Oct 2024 00:00:00 GMTProgrammingPythonNiceGUIhttps://prahari.net/blog/1-nicegui-weather-app-setting-up-the-projecthttps://prahari.net/blog/1-nicegui-weather-app-setting-up-the-projectIn this series, we will build a weather app using NiceGUI, a Python-based UI library that simplifies web app development. In this first post, we'll cover...Wed, 16 Oct 2024 00:00:00 GMTPythonProgrammingNiceGUIhttps://prahari.net/blog/part-03-fastapi-fundamentals-mastering-responses-for-dynamic-api-interactionhttps://prahari.net/blog/part-03-fastapi-fundamentals-mastering-responses-for-dynamic-api-interactionWelcome back to the FastAPI Fundamentals series! In the previous posts, we explored the basics of FastAPI, building powerful APIs, and handling user...Mon, 11 Dec 2023 00:00:00 GMTFastAPIPythonProgramminghttps://prahari.net/blog/part-02-fastapi-fundamentals-getting-user-inputhttps://prahari.net/blog/part-02-fastapi-fundamentals-getting-user-inputFastAPI offers various methods to get user input in your API. Let's explore four commonly used methods: Query parameters, Path parameters, Body...Thu, 23 Nov 2023 00:00:00 GMTFastAPIPythonProgramminghttps://prahari.net/blog/part-01-fastapi-fundamentals-building-powerful-apis-with-easehttps://prahari.net/blog/part-01-fastapi-fundamentals-building-powerful-apis-with-easeWelcome to the world of FastAPI! If you're looking to supercharge your Python API development, you're in the right place. In this guide, we'll walk...Mon, 20 Nov 2023 00:00:00 GMTFastAPIPythonProgramminghttps://prahari.net/blog/using-python-and-aws-lambda-to-resize-imageshttps://prahari.net/blog/using-python-and-aws-lambda-to-resize-imagesImage resizing is a common task in web development, especially when dealing with user-uploaded images. AWS Lambda provides a serverless computing service...Thu, 20 Jul 2023 00:00:00 GMTCloud ComputingAWS Certified Solutions ArchitectTechnologyhttps://prahari.net/blog/getting-started-with-go-programminghttps://prahari.net/blog/getting-started-with-go-programmingGo, also known as Golang, is an open-source programming language developed by Google in 2007. It is designed to be simple, efficient, and productive, with...Wed, 31 May 2023 00:00:00 GMTGoLangTechnologyProgramminghttps://prahari.net/blog/interplanetary-file-systemhttps://prahari.net/blog/interplanetary-file-systemIn today's digital age, the way we store, share, and access data has become increasingly centralized, leading to concerns over security, reliability, and...Thu, 25 May 2023 00:00:00 GMTTechnologyIPFShttps://prahari.net/blog/getting-started-with-aws-eks-clusterhttps://prahari.net/blog/getting-started-with-aws-eks-clusterAmazon Elastic Kubernetes Service (EKS) is a fully managed Kubernetes service that Amazon Web Services (AWS) provides. It makes deploying, managing, and...Thu, 11 May 2023 00:00:00 GMTCloud ComputingTechnologyAWS Certified Solutions ArchitectKuberneteshttps://prahari.net/blog/aws-iam-concepts-policieshttps://prahari.net/blog/aws-iam-concepts-policiesAWS Identity and Access Management (IAM) provides a powerful policy system to define permissions for accessing AWS resources. IAM policies are JSON...Tue, 02 May 2023 00:00:00 GMTCloud ComputingAWS Certified Solutions ArchitectTechnologyhttps://prahari.net/blog/aws-iam-concepts-roleshttps://prahari.net/blog/aws-iam-concepts-rolesWhen it comes to AWS IAM (Identity and Access Management), roles are one of the key building blocks. Roles are used to grant permissions to an entity...Wed, 26 Apr 2023 00:00:00 GMTCloud ComputingAWS Certified Solutions ArchitectTechnologyhttps://prahari.net/blog/aws-iam-concepts-usershttps://prahari.net/blog/aws-iam-concepts-usersWhen working with Amazon Web Services (AWS), it's important to have a solid understanding of the building blocks of AWS Identity and Access Management...Tue, 25 Apr 2023 00:00:00 GMTCloud ComputingAWS Certified Solutions ArchitectTechnologyhttps://prahari.net/blog/different-ways-to-interact-with-awshttps://prahari.net/blog/different-ways-to-interact-with-awsAmazon Web Services (AWS) provides several ways to interact with its services and resources. Whether you're a developer building an application, an IT...Thu, 20 Apr 2023 00:00:00 GMTAWS Certified Solutions ArchitectCloud ComputingTechnologyhttps://prahari.net/blog/intro-to-aws-well-architected-frameworkhttps://prahari.net/blog/intro-to-aws-well-architected-frameworkThe AWS Well-Architected Framework is a set of best practices and guidelines designed to help cloud architects build secure, reliable, and efficient...Wed, 12 Apr 2023 00:00:00 GMTCloud ComputingTechnologyAWS Certified Solutions Architecthttps://prahari.net/blog/introduction-to-aws-security-token-service-stshttps://prahari.net/blog/introduction-to-aws-security-token-service-stsThis blog post is the 2nd in the AWS Certified Solutions Architect series. This is inline with my efforts to crack the AWS Certified Solutions Architect...Thu, 06 Apr 2023 00:00:00 GMTAWS Certified Solutions ArchitectCloud ComputingTechnologyhttps://prahari.net/blog/introduction-to-aws-iamhttps://prahari.net/blog/introduction-to-aws-iamThis blog post is the 1st in the AWS Certified Solutions Architect series. This is inline with my efforts to crack the AWS Certified Solutions Architect...Wed, 05 Apr 2023 00:00:00 GMTAWS Certified Solutions Architecthttps://prahari.net/blog/start-of-a-new-journey-into-the-devops-consultancy-worldhttps://prahari.net/blog/start-of-a-new-journey-into-the-devops-consultancy-worldWelcome to PraHari Tech, your premier destination for DevOps consulting and training services. I am thrilled to announce the launch of my new business and...Sat, 01 Apr 2023 00:00:00 GMTDevOpsConsulting