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DEV Community · Technology

Building a $12 Multi-Robot Swarm: ESP32 BLE Mesh for STEAM Education in Emerging Markets

Building a $12 Multi-Robot Swarm: ESP32 BLE Mesh for STEAM Education in Emerging Markets What if a classroom of 30 kids could each control a robot in a coordinated swarm — for less than the cost of a single LEGO Mindstorms kit? At LearnOBots, we've been teaching robotics to kid...

Shamyl Bin Mansoor 2 hours ago

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DEV Community · Technology

Cheap OpenAI-compatible inference for AI agents via x402 ($0.10/1M tokens on Solana + Base)

If you're building an autonomous AI agent, you've probably hit the same wall I did: your bot needs LLM inference, but every provider wants an API key, a credit card, a signup flow. That flow assumes a human operator, not a self-directed agent. x402 solves that. It's the HTTP status-code-based payme...

GitVova999 2 hours ago

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DEV Community · Technology

"0 matches" looked like "all clean": the PowerShell filter that couldn't fail loudly

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. Some bugs crash. Some bugs corrupt. The one that taught me the most did neither — it reported success while doing absolutely nothing, and it did it during a launch gate. The setup Launch night for a long-r...

Bryan Williams 2 hours ago

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DEV Community · Technology

I built a robot that applies for jobs. The hard part was proving it worked.

The demo was never the problem. A browser agent that opens a job posting, reads the form, writes your history into it and clicks submit is a weekend of work now. It looks like magic in a screen recording. You can film one this afternoon. The problem is the sentence you have to say afterwards: it w...

Ava Bagherzadeh 2 hours ago

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DEV Community · Technology

Your job application isn't sent until the company says it is

There is a moment every job seeker knows. You finish the fourteenth form of the week, you hit submit, the page goes white, and something appears that says Thank you for your interest. Then nothing. For weeks. And you cannot tell the difference between they read it and passed, they never opened it,...

Ava Bagherzadeh 2 hours ago

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DEV Community · Technology

Understanding Git Workflow from Working Directory, Staging, Commit, and Push.

Git Git is used to track changes in files and allow for managing ythe developmnet of projects, especially those that entail data. I used git to enable me record the different versions of my data from the original raw data, compare changes, without interfering with the initial data....

Adolph Ochieng 2 hours ago

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DEV Community · Technology

Model Cascade: making LLM classification cheaper

Many LLM workloads are classification tasks. This can get expensive, and I believe it is going to become more and more important, especially with the proliferation of software factories. So what is Model Cascade? In short, it is a way to make a deterministic system around a cheap model and make it...

Boris Barac 2 hours ago

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DEV Community · Technology

Your degree got you the interview. This is why it isn't getting you the job.

I'm in a lot of Facebook groups. Dev groups, IT groups, job groups, here in the Philippines. And there's one post I see more than any other. It goes like this: BSIT graduate. Certificates in [list]. Looking for work. Willing to learn. Please DM. Hundreds of them. Good people. Nobody replies. If...

TheWorkBehindtheLuck 2 hours ago

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DEV Community · Technology

Mix and Match: One Agent, Three Clouds, One Protocol

This article provides a step by step comparison of the same research agent built three times, on Google ADK, AWS Strands and Microsoft Agent Framework, all three speaking A2A to one coordinator. The code is here: github.com/xbill9/multicloud-a2a-subagent What is this project trying to Do...

xbill 2 hours ago

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DEV Community · Technology

Mix and Match: Serving an ADK Agent to AWS and Azure

This article provides a step by step look at running a Google ADK agent on Cloud Run, and serving it over the A2A protocol to callers that are not ADK. The code is here: github.com/xbill9/multicloud-a2a-subagent What is this project trying to Do? This project aims to answer one researc...

xbill 2 hours ago

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DEV Community · Technology

Healthtech Welcome Email — 4 API Signals Before Raising Dedicated-Domain Volume

The hard part of a healthtech signup email isn't calling a send API. It's proving that a dedicated domain is ready for more welcome-email traffic without losing the evidence needed to explain each verification link later. Short answer: use a gradual warmup plan controlled by four signals — authenti...

marcorossi4891 2 hours ago

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DEV Community · Technology

Auditing an Existing Subnet Plan Before a Cloud Migration

Most subnet articles start from a blank piece of paper and end with a clean diagram. That is not the situation most teams are actually in. The situation is a Confluence page from 2019, a router config someone exported last quarter, and a network engineer who swears "the 10.40.0.0/16 is in use somewh...

Tea-sip 2 hours ago

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TechCrunch · Technology

Who’s behind the new ‘stealth model’ Ox Alpha?

A mysterious new AI model called Ox Alpha has driven certain corners of the internet into a frenzy of speculation.

Anthony Ha 2 hours ago

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DEV Community · Technology

Ditch the Cloud: Building a Real-Time In-Browser Video Editor with WebCodecs, WebGPU, and Canvas

For over a decade, building a video editing SaaS came with a massive hidden tax: cloud infrastructure costs. Every time a user applied a cinematic color grade, cropped a 4K frame, or stitched clips together, those raw bytes had to travel across the network, hit an expensive GPU-backed server cluster...

Programming Central 2 hours ago

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DEV Community · Technology

Google indexed 428 of my 1,432 generated pages and none of my 2,290 handwritten ones

I spent yesterday planning to delete the best part of my site. I run a calculators-and-tools site, solo, five months old. About 5,800 pages across four language sections. Google has 642 of them in its index. Not great. The rest sit in two buckets: 1,153 "crawled, currently not indexed" and 4,161 "d...

farcrak 3 hours ago

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DEV Community · Technology

The Bug That Passed Every Test — And Still Took Production Down

A few years ago, I was working on a backend service that looked completely healthy. Tests were green. CPU usage was normal. Memory looked fine. No obvious exceptions were showing up in the logs. And yet, every few hours, requests would suddenly slow down. Not fail. Just become painfully slow. T...

Dinesh 3 hours ago

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DEV Community · Technology

Claude Code Overtakes GitHub Copilot: What JetBrains' Survey of 15,000 Developers Says About AI Coding Agents in 2026

AI coding agents are no longer an experiment. According to JetBrains' Developer Ecosystem Survey 2026, 90% of professional developers now use AI coding agents at work at least weekly. 68% use them daily. The survey ran from May to July 2026 and collected responses from more than 15,000 professional...

jamilxt 3 hours ago

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DEV Community · Technology

A GIF re-encode made the file 4.5x bigger. Interframe differencing fixed it.

Cropping a GIF should not make it bigger. Ours did, and not by a little: a 288-frame Foucault pendulum went from 1074 KB in to 4881 KB out, and a 70-frame gun turret went 116 KB to 1232 KB. That is 455% and 1062%. The same thing happened with no crop at all, which is the detail that gives the cause...

이준김 3 hours ago

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DEV Community · Technology

Speaker - Microsoft Build 2026 Community Event

On June 6, 2026, I had the opportunity to speak at the Microsoft Build 2026 Community Event, held at IDAT Lima Centro as part of the Azure User Group Latam community. The event brought together developers and technology professionals to explore topics related to Microsoft Build 2026, including gene...

Jorge Aurelio de la Flor Argandoña 3 hours ago

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TechCrunch · Technology

Uber faces fine of nearly $1B over automated driver suspensions

The Dutch Data Protection Authority is fining Uber €825 million in the second largest penalty issued under Europe’s GDPR.

Anthony Ha 3 hours ago

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The Verge · Technology

GTA VI: all the news on Rockstar’s next entry in the Grand Theft Auto series

It’s been over a decade and two console generations since GTA V came out, and its sequel is still a work in progress. GTA VI has faced multiple delays, with developer Rockstar Games bumping back its predicted release date twice, first to May 26th, 2026, then again to November 19th, 2026, a full year...

Verge Staff 3 hours ago

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DEV Community · Technology

Seven interview rounds is a confession that your bar is broken

If you have to go through seven interview rounds, it's not thorough process - it's a hostage situation. A company that needs seven conversations to decide on you is telling you it can't read a signal. So they're going to wear you down until you're the only one left. What long loops actuall...

Aditya Agarwal 3 hours ago

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DEV Community · Technology

GSoC 2026 Final Report: Automated Webpack Documentation Pipeline 💫

Name: Mohamed Shams El-Deen (@moshams272) Organization: Webpack Mentors: Aviv Keller (@avivkeller), Claudio Wunder (@ovflowd), Sebastian Beltran (@bjohansebas) GSoC Teammates: Nikhil Kumar Rajak (@ryzrr), Tushar Thakur (@TusharThakur04) Introduction As part of Google Summer of...

Mohamed Shams El-Deen 3 hours ago

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DEV Community · Technology

🧐 ECS Express Mode vs Traditional ECS: A Hands-on Comparison with Terraform

Hola Amigos 👋 Welcome to the world of Cloud and Automation! AWS launched ECS Express Mode in late 2025, and in today’s blog, we will understand how it compares to traditional AWS ECS. We will use a basic Flask portfolio website with three versions to illustrate how both approaches hand...

Pravesh Sudha 3 hours ago

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