
NodeESP — Visual programming for ESP32
Visual node-based programming environment for creating GPIO logic and MQTT workflows on ESP32 devices.
@NodeESP · X
- Project for sale
The full gallery
Tech stack
60 projects

Visual node-based programming environment for creating GPIO logic and MQTT workflows on ESP32 devices.
@NodeESP · X
- Project for sale

Generate free QR codes for URLs, text, WiFi, vCards, and more. No signup required. Download high-resolution PNG files instantly. Privacy-first, works offline.
@andrei_haiducu · X
free static QR code generator, anything vCards / WiFi etc, all in your browser! Dynamic QR codes available!

Generate QR codes instantly with Dimas' free, no-login toolbox.
u/Live_Mathematician20 · Reddit
I created a website with free tools. It all started when my colleague reached me with a complaint that she created a few QR codes, and after a week they started showing paywall. By that time those QR codes were printed on promo banners. I remember Internet as a place where you find a tool, use it and leave. That's it - no paywalls, no subscriptions, no accounts. So I decided to put a piece of those beautiful Internet back and created a small toolbox site - dimastoolbox.com Of

Visualize and predict weather with on-device calculations and custom aggregation modes.
__mp · HN
I built my own weather prediction / visualization app: https://wx.rsp.li (on-device temperature lapsing, on device interpolation modes, user-selectable aggregations, etc…). One of these days I should do a writeup. I also asked Claude to build a photo gallery for me https://places.pascalspoerri.ch (HDR, map support, similar images)

No-code platform for data analysis and document extraction.
@0xLingjieKong · X
Hey @Sarakhan49309, I'm currently building an agent specialized in data analysis that reduces hallucinations. would love to connect!

Collaborative whiteboard for wireframes, flowcharts, and process design — no signup needed.
veau · V2EX
[产品自荐] 基于 Excalidraw,我做了一个更顺手、更全能的纯本地白板: 1NX 作为产品民工+重度 Excalidraw 用户。 在 AI 的加持下,基于 Excalidraw 做了一个更顺自己手、更全能的纯本地白板:**1NX.NET** 访问地址: https://1nx.net/ **核心解决日常画图、画交互、读取各种文件轻量化处理的问题。** 产品能力概览: * 无须注册,打开即用。完整兼容 Excalidraw ,旧图可直接导入继续编辑 * 优化画布操作手感和交互,解决存储满的问题,大量元素上依然流畅 * 流程图、脑图、原型、文档、代码和图片都能放在同一张画布 * 支持 Axure 、XMind 、draw.io 、Visio 、Mermaid 、PlantUML 等格式直接导入 * 代码块、PDF 、Word 、PPT 、Excel 可直接摊开阅读;无需打开软件 * 图片裁剪、切片、马赛克、高清放大、智能抠图一站完成(全单机完成) * AI 生成思维导图、流程图、以及汇报级别的 PPTX * 增强本地化单文件能力,全

Open-source remote control for Claude Code and Codex on iOS, Android, and web.
@Ex3NDR · X
Few days ago Happy had a birthday. Tried to refresh one of the most neglected part of it: our Happy Website: also i built a new harness called “rig”. i started to use at work recently instead of codex/claude code and i liked how it does work. i want to share this with everyone. it is a codex and cause code reimplemented using Pi, but keeping native prompts and expanded a little for uniformity (like added workflows to codex yay!). when something new released that is worthy of porting - i ask Sol to mim for prompts or read sources directly and i can have a feature within an hour. why this is needed? i was constantly blocked by the needing of integrating a lot of models together, which each has their own harness or many doesn’t have any, but i didn’t want to go too far from native and don’t like the idea of extensions - i want experience to be the same everywhere. i think configuration > extensions. more soon

Route AI coding tasks to the cheapest capable model based on estimated complexity.
@viiforwinn · X
Hey, let's connect! 🚀 I got tired of the manual grind (picking Claude models, checking diffs for secret leaks, and guessing agent parallel counts), so I automated all three. Built kodemux—it's completely free and open source:

Open-source, OpenFeature-native feature flags you self-host in five minutes. No server, no database, no bill, and multiple languages work on day one through their own OpenFeature p
@Flaghoistdev · X
Open source solution for rolling feature flags

Connect Gmail accounts to automate email sending and track opens and clicks.
@KenziChenBuilds · X
Hey! Developer behind Always looking for feedback to make it better.

Chat with an AI rubber duck debugging assistant to solve coding problems.
Antihero5759 · HN
I built a rubber duck chat that you can use through the browser but it's also OpenAI api compatible so you can plugin it in and use it through your favorite ai app. https://bearjcc-quack-language-model.hf.space/

Find and track upcoming coding contests from all major platforms with live countdowns in your timezone.
@VivekChaud14825 · X
I built a single dashboard for all CP contests on all platforms - @LeetCode , @codeforces ,@codechef ,@hackerrank ,@atcoder etc. Check out👇🏻 Link : Entirely vibecoded using lovable AI. Artificial Intelligence is really learning fast than expected.