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Wilhelm Erasmus's Feed

Show HN: Natural language in. Working electronics out. In minutes

We built a product that can take in text to describe your circuit and generate the electronics for you in minutes. Reach out to [email protected] so I can send you our product to try out.

Ask HN: Are diffs still useful for AI-assisted code changes?

I’m wondering whether traditional diffs are becoming less suitable for AI-assisted development..Lately I’ve been feeling frustrated during reviews when an AI generates a large number of changes. Even if the diff is "small", it can be very hard to understand what actually changed in behavior or structure.I started experimenting with a different approach: comparing two snapshots of the code (baseline and current) instead of raw line diffs. Each snapshot captures a rough API shape and a b

Show HN: Cadence Spanish – AI audio lessons to learn Spanish

Hey!I'm Ali, and I built a tool to help me learn Spanish. There's a good amount of info in the about page, but the short version is that I found apps like Duolingo completely useless. In theory they're designed to help you speak a language but I found it mostly helped my muscle memory tap the right parts of a screen without really learning to say anything. Or more importantly prepare me for how fast a native Spanish speaker speaks!After giving up on Duolingo I tried a few differen

Show HN: Achromatic – AI Ready Next.js 16 Starter Kit

Hey HN,I've been building SaaS apps for 12 years and got tired of rebuilding the same things every time. Not only for products, but also internal tools in our organization.Things like admin panels, billing/credits, multi-organization support and even marketing pages are still surprisingly annoying and time-consuming to get right. Having these solved upfront makes a huge difference and you can use your Claude tokens for features right away.What's in it:- Authentication (Better Auth

Show HN: Repomance: I made a Tinder like app that you can discover & star repos

Hi everyone,Repomance is an app for discovering curated and trending repositories. Swipe to star them directly using your GitHub account. It is currently available on iOS, iPadOS, and macOS. I plan to develop an Android version once the app reaches 100 users.Repomance is open source: https://github.com/mpospirit-apps/Repomance-iOSAll feedback is welcome, hope you enjoy using it.

Show HN: I made a search engine for prediction markets

Prediction markets are having a moment, but searching them is painful: - Markets are spread across 9+ platforms - Each platform has different UX and search capabilities - No way to compare similar markets across platforms - Finding new markets on topics you care about requires manual checkingI built UPMI to solve this. One search queries all platforms, AI scores relevance, and you get a unified table of results sorted by match quality.The architecture is fairly straightforward: - Firecrawl maps

50k people were dropped from one AI training project during the holidays

During the holidays, 50k people were dropped from one AI training project without the story reaching the front page. That tells you how invisible this expert workforce still is.Right before the new year, the AI training community absorbed one of its biggest shockwaves: 50k contributors waking up to sudden removal and a one-line “quality requirements changed” message, with no real path to recover. For many, it meant losing time, momentum, and income.This isn’t a post against AI training, just mor

Show HN: AgentOS – Self-hosted web UI for managing multiple Claude Code sessions

Hi all,I just open-sourced AgentOS, a tool I built for myself when I got tired of juggling a bunch of terminal windows while working with Claude Code. You can run it yourself and it's completely free.It's a web UI that lets you:- Run multiple Claude sessions side-by-side (up to 4 panes) and each pane can have multiple tabs for those power users out there - Fork conversations when you want to try different approaches - Organize sessions into folders - Have an embedded terminal right the

My "Prompt Compiler" Loop – Using PromptKelp to Build PromptKelp

A few days ago I shared the V1 of PromptKelp [0], a tool I built to solve continuous improvement for my AI agent prompts. I wanted to share a quick update on how the "dogfooding" experiment is going, because it’s reached a compelling place for me.Here's the loop I run multiple times per day now: - Pull up a prompt in promptkelp and evaluate it. - Make one of the improvements it suggests. - Upload the latest samples of iteractions from testers and dogfooders. - PromptKelp finds use

Show HN: I built Mike – AI motion graphics

When you think of AI videos, you think of something like Sora or Veo 3 (diffusion). What if the AI could write the code for a video like a website? This thought experiment led me to create Mike. It writes React code which can be rendered into a video. You can ask the AI to use any Node library to render graphs, animations, simulations.

Show HN: LLM-powered What If text gen for fun

https://getreplay.app/Hi builders! I was falling asleep when the idea for this project came to me. So, I've decided to vibecode it via Lovable to the best of my ability. This is a personal/inspirational project, but I've tried to make it as good as possible given the constraints.Tech Stack:- Frontend: React 18 + Vite + Tailwind CSS- AI: Gemini 2.5 Flash (via Lovable AI Gateway) for low-latency, empathetic coaching (to keep costs low and ship fast)- Infrastructure: L

Show HN: SpaceXYZ

Hello everyone and happy new year.<p>SpaceXYZ is a 3D sound spatialization app. Currently it supports 3 algorithms: VBAP, Improved DBAP and HRTF.<p>No need to sign in or pay you can test the product in your browser.<p>Any feedback is greatly appreciated.<p>Don&#x27;t hesitate reaching out for concerns about app or payments [email protected]

Show HN: SquareFaceIcon – a tiny "protocol" for consistent square avatars

SquareFaceIcon is a super–simple “avatar protocol” plus a free web tool for generating consistent square face icons: https:&#x2F;&#x2F;squarefaceicon.top&#x2F;Instead of every product&#x2F;team reinventing avatar styles, SquareFaceIcon treats a face icon as a tiny, structured “packet”: - fixed square canvas - a small set of discrete layers (skin, hair, eyes, mouth, extras, background) - finite, enumerable options per layer (IDs instead of pixels)That gives you: - *Deterministic avatars

I analyzed 159 viral HN posts – negative sentiment outperforms positive 2:1

I scraped 1,576 HN snapshots and found 159 stories that hit the maximum score. Then I crawled the actual articles and ran sentiment analysis.The results surprised me.*The Numbers*- Negative sentiment: 78 articles (49%) - Positive sentiment: 45 articles (28%) - Neutral: 36 articles (23%)Negative content doesn&#x27;t just perform well – it dominates.*What &quot;Negative&quot; Actually Means*The viral negative posts weren&#x27;t toxic or mean. They were:- Exposing problems (&quot;Why I mass-delet

Critical React, Next.js flaw lets hackers execute code on servers

A maximum severity vulnerability, dubbed 'React2Shell', in the React Server Components (RSC) 'Flight' protocol allows remote code execution without authentication in React and Next.js applications.

Show HN: Pytest-httpdbg – a simple way to include HTTP traces in Allure reports

Hi HN,I recently updated my pytest plugin based on httpdbg to include the HTTP traces directly in the Allure reports. As with httpdbg, the idea is to have nothing more to do than to add an argument to your command line: --httpdbg-allure.For example:pytest examples&#x2F;pytest_demo.py --alluredir=.&#x2F;allure-results --httpdbg-allureFor each test, all HTTP requests will be recorded and saved in the Allure report under a step named httpdbg.You can check the README in the repository to see how it

Show HN: Tusk Drift – Open-source tool for automating API tests

Hey HN, I&#x27;m Marcel from Tusk. We’re launching Tusk Drift, an open source tool that generates a full API test suite by recording and replaying live traffic.How it works:1. Records traces from live traffic (what gets captured)2. Replays traces as API tests with mocked responses (how replay works)3. Detects deviations between actual vs. expected output (what you get)Unlike traditional mocking libraries, which require you to manually emulate how dependencies behave, Tusk Drift automatically rec

Show HN: Visual DB – Web front end for your database (update)

Hi HN, I’m Sandhya and we have built Visual DB — a web front end for databases. It lets you create data-entry forms, spreadsheet-like grids, and reports directly on top of your existing relational database.Here’s a quick walkthrough: https:&#x2F;&#x2F;youtu.be&#x2F;4zv_HQKdKeI (13 minutes)WHAT PROBLEM IS THIS SOLVING?Building CRUD apps with master-detail forms, transactions, and proper concurrency controls typically requires weeks of custom development and ongoing maintenance. Visual DB lets you

Show HN: WorkBill – Modern Alternative to QuickBooks

Hi HN, I am Aswin Mohan(https:&#x2F;&#x2F;aswinmohan.me), a full-stack mobile&#x2F;web developer. I have been working on WorkBill (https:&#x2F;&#x2F;workbill.co) for the past 6 weeks on the side and wanted to share it here.demo: https:&#x2F;&#x2F;demo.workbill.co&#x2F;inbox (no signup needed) video-demo: https:&#x2F;&#x2F;www.loom.com&#x2F;share&#x2F;9775811960ad47d7ada89007d8169d90WorkBill is the modern, flexible accounting platform for small businesses. It is based on BeanCount(https:&#x2F;&#x

Show HN: OgBlocks – Animated UI Library for CSS Haters

Hey HN,I&#x27;m Karan, a frontend developer who loves creating UIs, but I&#x27;ve found that many people don&#x27;t like CSS, but they want their website to look beautiful and polished, and what better way to enhance a website than with animationsAnimations using plain CSS are tricky, and that&#x27;s why I leaned towards Motion a powerful animation library for React, and I built ogBlocks using React, Motion, and Tailwind CSSI built it for three reasons:1. Anyone can integrate beautiful animated