freeCodeCamp.org

We're a community of millions of people who are learning math, programming, and computer science together. A 501(c)(3) public charity. Tweets by @abbeyrenn.

[freeCodeCamp.org @freeCodeCamp]

Real-time object detection in robotics needs more than just a good model to run.

In this tutorial, Iyanuoluwa shows you how to build a perception pipeline with ROS 2 and YOLOv11.

You'll run threaded inference, track objects with ByteTrack, validate detections, and optimize the model with ONNX for edge deployment.

https://t.co/dCIXAxNAYD

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For today's coding challenge, you'll get an array and an integer representing how many positions to shift the array. You'll need to return...the shifted array! See if you can solve it on the freeCodeCamp mobile app.

[freeCodeCamp.org @freeCodeCamp]

React forms can quickly become more complex, slow, and difficult to maintain as they grow.

In this guide, @tapasadhikary shows you how to build production-ready forms with TanStack Form, Zod, and ShadCN UI.

You'll learn about validation, dynamic arrays, and patterns for building scalable, type-safe forms.

https://t.co/W3i5TmFcGG

[freeCodeCamp.org @freeCodeCamp]

Cron works well for simple scheduled tasks. But as workflows grow, things get more complex.

In this guide, Rob explains when to move beyond cron using workflow orchestration.

You'll build an ETL workflow that has scheduling, task dependencies, retries, failure alerts, event triggers, and backfills.

https://t.co/8p1v1Sp9q9

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Some bugs only happen in production thanks to differences in data, config, and infrastructure.

In this guide, @manishmshiva shows you how to systematically diagnose them.

You'll use logs, metrics, distributed tracing, and environment analysis to find root causes faster and build systems that are easier to debug.

https://t.co/EhuwbUZRUB

[freeCodeCamp.org @freeCodeCamp]

Building an e-commerce app means handling products, auth, payments, state, and deployment together.

In this course, you'll learn how to build a full-stack e-commerce app with Next.js + Supabase.

It covers authentication, server actions, API routes, reviews, how to deploy the app, and more.

https://t.co/fDwf4xm6R1

[freeCodeCamp.org @freeCodeCamp]

Building projects is one of the best ways to improve your web dev skills.

In this course, you'll build 19 projects with HTML, CSS, and JavaScript, like quizzes, Kanban boards, and API-based apps.

You'll also practice form validation, local storage, UI design, working with external APIs in real projects, and more.

https://t.co/WDiQ48f1fV

[freeCodeCamp.org @freeCodeCamp]

Express makes it easy to build APIs, while TypeScript helps catch errors before they reach production.

In this course, Rachel shows you how to build a fully typed REST API in Express with TypeScript.

You’ll learn about request and response typing, modular routing, custom middleware, validation, authentication, and query filtering.

https://t.co/E9t5FQk47E

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For today's coding challenge, you'll get strings for a person's name, title, and company. You'll need to return an email signature as a single string using a few rules. Check it out on the freeCodeCamp mobile app.

[freeCodeCamp.org @freeCodeCamp]

AI coding tools are changing how software agencies plan, build, and ship client projects.

In this article, @manishmshiva explains how they're using Claude, Cursor, and GitHub Copilot together in prod.

You’ll learn how each tool fits into the workflow, why human review is still key, and how AI is affecting everything.

https://t.co/yoYEHX6jfk

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Anthropic's Claude Certified Architect exam focuses on practical AI engineering.

In this course, Andrew helps you prepare by building real-world agent workflows with Claude, MCP, and the Claude Agent SDK.

You'll learn about agent orchestration, tool design, prompt engineering, context management, and more.

https://t.co/zA9wWu6puu

[freeCodeCamp.org @freeCodeCamp]

AI-powered IDEs can help you get projects done quicker with multiple agents working together.

In this course, Ania shows you how to build and deploy an app using TRAE IDE's AI-powered development workflow.

You'll learn about multi-agent collaboration, AI-assisted planning, full-stack development, and more.

https://t.co/6RgIEfNt53

[freeCodeCamp.org @freeCodeCamp]

Modern translation systems use neural networks to understand context.

In this tutorial, @djibril_mg explains how neural machine translation works and helps you build a translation app with React Native and QVAC.

You’ll use an on-device model to translate text locally, keeping the app private, offline, and free.

https://t.co/p0KNELcTuu

[freeCodeCamp.org @freeCodeCamp]

A full-stack app needs a front end + auth, a database, an API, and a reliable way to deploy everything.

In this tutorial, @cloud_girl1 teaches you how to build a full-stack CRUD app with React, AWS Lambda, DynamoDB, API Gateway, and Cognito auth.

You'll also learn how to use AWS CDK to deploy the backend and CloudFront to ship the frontend over HTTPS.

https://t.co/4xWj9sLuOp

[freeCodeCamp.org @freeCodeCamp]

Continuous Integration & Continuous Delivery helps you deliver reliable software quickly.

And it's designed to automate the process of integrating, testing, & deploying code changes.

In this tutorial, Juan helps you create a basic CI/CD pipeline using Python, Webhooks, and Bitbucket on Linux.

https://t.co/g3AvI54TT2

[freeCodeCamp.org @freeCodeCamp]

For today's coding challenge, you'll get a string and you'll need to return an array with the number of vowels and consonants in the string. See if you can solve it on the freeCodeCamp mobile app.

[freeCodeCamp.org @freeCodeCamp]

Self-hosted AI agents give you more control over where your assistant runs and how it works.

In this tutorial, @manishmshiva shows you how to deploy your own 24/7 AI agent on your machine or on a cloud platform.

You'll also learn how to interact with it, think about key security concerns, and keep it updated.

https://t.co/76C5M7Z076

[freeCodeCamp.org @freeCodeCamp]

LLM prompts can get chaotic when they have to plan, write, and review all at once.

In this tutorial, Darsh shows how to build a multi-agent AI system in Python and LangGraph.

You'll use Ollama, Qwen, focused agent prompts, shared state, nodes, and edges to build a local study guide generator.

https://t.co/5ZJWP4cRlB

[freeCodeCamp.org @freeCodeCamp]

Sending a large file seems simple at first.

But there are many processes working together in the background.

In this tutorial, @reetain_raina covers chunk management, object storage, encryption, & everything else needed to upload a large file & share a download link.

https://t.co/4Vmmh2HmR2

[freeCodeCamp.org @freeCodeCamp]

AI coding agents can do a lot.

They can read your codebase, edit files, and run commands while working on large tasks.

In this course, you'll learn how to get reliable results from AI agents by giving them the right context, controlling permissions, & more.

https://t.co/4Cbapb97pb