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Every 3D printer owner needs these 2 essential safety upgrades
<p>If you can spend a few hundred bucks on a 3D printer and some filament, you can afford to spend a little on a few upgrades to ensure that your hobby is a safe one.</p><img src='https://static0.howtogeekimages.com/wordpress/wp-content/uploads/2026/03/bambu-lab-p2s-3d-printer-printhead.jpg' />
5 Excel mistakes beginners make that ruin their spreadsheets (and what to do instead)
There's a massive difference between a spreadsheet that looks good and one that actually works. Many beginner spreadsheet habits are secretly ticking time bombs for your data. Here are the core mistakes messing up your files, and the simple settings that fix them.
My Take on: An LLM API call, in 4 GIFs
My Take on: An LLM API call, in 4 GIFs IntroductionMy Take on: An LLM API call, in 4 GIFs is gaining massive traction in the developer community. Whether you are a beginner or experienced developer, this guide will help you get up to speed quickly. Why It MattersThe tech landscape is evolving rapidly. Staying current with tools like this gives you a competitive edge in the job market and opens new opportunities for side income. Quick Start Step 1: InstallationMost moder
Building a Live Odds Dashboard in React (without the re-render storm)
A live odds dashboard is one of those projects that looks simple — fetch some JSON, display it, refresh on a timer — and then quietly becomes a re-render nightmare. Here's a working React 18+ implementation that doesn't grind your browser when 200 odds update in the same second. What we're buildingA two-column dashboard: left = list of live matches, right = the selected match's 1X2 + Over/Under 2.5 prices, updating every second. 1. The fetch hook (polling-based, cache-aware)import
SVG Keyframe Animation in Pure CSS (No Library)
<p>Liquid syntax error: Variable '{{% raw %}' was not properly terminated with regexp: /\}\}/</p>
Mini Micro Fantasy Computer
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Gofin – Go library for bot detection via browser fingerprinting
Built this Go library over the past few weeks it takes a browser fingerprint from your frontend JS and scores how bot-like it looks.Basically you collect stuff like navigator.webdriver, screen size, WebGL renderer, canvas hash, timezone, fonts, plugins etc. on the client, send it as JSON to your server, and the library runs it through a bunch of detection rules and gives you back a score and an explanation.Caught things like headless Chrome pretending to be a real browser, SwiftShader GPU (dead
How I Built 8 Free Dev Tools as a Solo Maker — Lessons Learned
The BackstoryI'm a solo developer. No team, no funding, no fancy stack. Just a laptop, Claude Code, and a problem: every online dev tool I used was uploading my data to some server.So I built my own. Eight of them. What I BuiltToolTimeJSON Formatter + CSV export45 minImage → Base64 encoder30 minSQL Formatter with highlighting1 hourMarkdown → HTML preview2 hoursUUID/ULID Generator15 minRegex Tester with captures40 minTimestamp Converter20 minDiff Checker (LCS algo)1.5 hoursTotal: ~7 ho
Appointment Setting Teams Calling Roofing Contractors Need to Remove Supplier and Directory Results First
Before assigning Chicago, Houston, or Dallas roofing lists to callers, agencies should separate callable local service providers from look-alike accounts.An appointment setting agency preparing a roofing outreach campaign may open a CSV for Chicago and Houston and see what looks like a healthy first-pass list: business names, phone numbers, websites, ratings, reviews, categories, and business hours. The problem usually appears only when the operations lead checks a few rows. One result is a roof
xTool's new full-color laser engraver looks like the ultimate craft room upgrade
Making custom keychains, engraved coasters, and decorative items sounds fun until reality hits you—complicated software, sketchy open-frame machines, and a price tag that makes the whole hobby feel like a small business investment. xTool now wants to change that with its newest product for everyday users and casual creators. The company has unveiled the xTool M2, an
Ask HN: How do you prepare to tech interview? Any tip and tricks?
Hey, I’m working as developer 8 years, and I changed company a couple times, and it was just luck every time, I ruined 90% of tech interviews, but in regular work I can do a lot of things, like invent some solutions, learn new things very quickly, but in interviews I’m absolute loserWhat can you advise me? How can I better pass job interviews?
"Networking" Problem of Engineers
Having social support and circle of friends is helpful in tough times. But when it comes to jobless engineers, their “social support” consists of other stresses or out of job engineers. These folks usually live away from family and old friends in hubs such as SF and when out of job, hang around with others who function as a depressive echo chamber: Young folks with limited “experience” [failure] and limited history of bouncing back from failures. Keeping in touch with family, working from the re
How Freelance Labor Became the Unsung Casualty of Media Layoffs
While layoffs are detrimental to all media workers, given freelancers’ especially precarious and disadvantaged situations, it’s important to examine how media layoffs are shaping—and enforcing—the nature of freelance labor.<img src='https://images.pexels.com/photos/8052859/pexels-photo-8052859.jpeg' />
The Outlook For Freelancing: Global Leaders Share Their Views
Forbes contributors publish independent expert analyses and insights. I write about the freelance revolution and the future workforce. “It was the best of times; it was the worst of times ...” began ...<img src='https://images.unsplash.com/photo-1690473711974-128be96d9a50?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=M3wyMzg1fDB8MXxzZWFyY2h8Mnx8RnJlZWxhbmNlfGVufDB8fDJ8fDE2OTM3ODUyODR8MA&ixlib=rb-4.0.3&q=80&w=1080' />
Idempotency Keys: How to Make Your API Calls Safe to Retry
Idempotency Keys: How to Make Your API Calls Safe to RetryNetwork failures happen. A request times out, a connection drops, a load balancer restarts mid-flight. The question isn't whether you'll face this — it's what happens when your client retries and the server already processed the first attempt.For read-only requests (GET, HEAD), this is painless: retry as many times as you like. But for write operations — charging a card, creating an order, sending an email — retrying a request that
Stripe is friendly to "friendly fraud"
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How does VuReact implement Vue v-on in React
VuReact is a compiler toolchain for migrating from Vue to React — and for writing React with Vue 3 syntax. In this article, we dive straight into the core: how Vue's common v-on/@ directive is compiled into React code by VuReact. Before We StartTo keep the examples easy to read, this article follows two simple conventions:All Vue and React snippets focus on core logic only, with full component wrappers and unrelated configuration omitted.The discussion assumes you are already familiar with
A Visual CSS @keyframes Editor in 500 Lines — Plus the 'Same Animation Won't Restart' Trap and How to Fix It
Every time I write a CSS @keyframes rule I end up cycling through -40 → -30 → -50 → reload → "still not right" → -45 → … forever. I built a 500-line vanilla JS tool with a timeline UI for editing stops and properties live, with the generated CSS ready to copy. While building it I hit a famously confusing CSS quirk: re-applying the same animation declaration doesn't restart the animation. Here's how the tool works and how to defeat that trap.🌐 Demo: https://sen.ltd/portfolio/css-animation-designe
Cloudflare Flagship
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I Built a Free Debt Payoff App - Here's What I Wish I Knew About Personal Finance APIs
A few months ago, I got tired of juggling multiple spreadsheets to track my debt payoff journey. So I built The Golden Grizzly (thegoldengrizzly.com) — a focused debt management app. Here's what I learned building it, especially around the challenge of connecting to financial data. The Problem: Most Finance Apps Try to Do EverythingMint, YNAB, Personal Capital — they're great apps, but they try to be everything: budgeting, investing, net worth tracking, and debt management all in one. The p