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25 projects
Buy a numbered ticket for a dollar. When the clock runs out one number is drawn and that wallet takes 95% of the pot. Runs on Solana, settled by a verifiable random draw.
@WeeklyDrawXYZ · X
Interactive lessons in math, programming, data analysis, AI, and science.
@BruceWayne95290 · X
just leaving a comment cause its 1am and im vibe coding, will come back tomorrow (on an alt account for open claw fyi) I've worked with the following brands: vytadose, bajabeachco, jaje health, eric javits, 4knines, welleco, coatdefence
Calculates the optimal Minecraft enchantment anvil order to minimize XP costs.
Minecraft Enchantment Calculator — Minecraft 附魔合并顺序计算器，寻找铁砧经验成本更低的书籍与装备组合顺序
Calculate concrete volume needed for slabs, footings, and driveways in yards, bags, or meters.
taylormichellebf · V2EX
做了一个免费的 Concrete Calculator，帮 DIY 用户估算混凝土用量 最近做了一个英文站：The Concrete Calculator 地址： https://the-concrete-calculator.com 它主要解决一个很具体的问题：用户在做 patio 、shed base 、walkway 、slab 这类小型混凝土项目时，不知道该 买多少混凝土、多少袋，或者该订多少 cubic yards 。 目前支持： - Concrete Slab Calculator - Concrete Pad Calculator - Concrete Yard Calculator - Concrete Bag Calculator - waste factor - cubic yards / cubic feet / cubic meters - 简单材料成本估算 做这个站的原因是我发现很多英文混凝土计算器要么广告太重，要么结果不够直观。这个版本尽量把核心计算和 单
A grid-based number puzzle game where you combine tiles to make 12.
sarreph · HN
Dozenal – A Game of Spatial Arithmetic
Calculate roman blind fabric, lining, rods and cords with fold layouts and printable planning sheets.
Free private finance tools: stress-test your portfolio against Fed rate hikes, project retirement savings with compound growth, and calculate your FIRE number. 100% browser-based —
@Big_Fin_Art · X
Interactive linear algebra tutor for solving matrix problems with real-time AI guidance.
u/CarefulArmadillo3496 · Reddit
SparkGap - an agentic linear algebra experience Hey everyone, I'm building sparkgap.ai , an interactive tutor for linear algebra. You fill in the matrices/vectors, the LLM gives you hints until you get it correct. The hope is that it will get smarter over time from the context of which questions were missed/answered correctly. As you master concepts, the progress ring next to each concept will slowly fill in. Hopefully it should be very difficult to get to full mastery. Feedback and qu
Calculate optimal team compositions for Anime Last Stand with this interactive strategy calculator.
Anime Last Stand Calculator — Anime Last Stand 游戏计算器，帮助玩家快速做出组队策略。
Take quick online tests and get instant results to track your progress.
Nalife520 · V2EX
做了一个在线反应、记忆与专注力测试网站 最近做了一个叫 [PickTests]( https://picktests.com/) 的在线测试站。 反应时间、序列记忆、瞄准训练这些东西，网上其实已经有很多了。真正让我想重新做一遍的，是不少页面要么堆了很多不必要的内容，要么广告和装饰比测试本身更抢注意力，到了手机上也不一定顺手。 所以我给这个项目定了一个比较克制的方向： 不急着增加更多测试，先把每一个已有的测试认真做好。 目前上线了 6 个测试： - 反应时间 - 瞄准训练 - 序列记忆 - 数字记忆 - 多目标追踪 - 斯特鲁普测试 首页：[反应测试]( https://picktests.com/zh/) 网站使用纯 HTML 、CSS 和 JavaScript ，没有账号系统。成绩保存在当前浏览器，打开页面就可以开始。 我现在主要在调整这些细节： - 操作是不是足够顺手 - 测试节奏会不会太快或太慢 - 结果能不能一眼看懂 - 动效和反馈会不会太多 - 手机、平板和电脑上的体验是否一致 目前最想先做好的页面
Practice hardware engineering through interactive digital logic and Verilog coding problems.
@Aimenbuilds · X
- leetcode for hardware engineers! We map job postings of hardware roles 1-1 to course requirements!
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
