kindro.store — Projects & Tools by Luis Yu
Projects, tools, and consulting by Luis Yu — web apps, Bitcoin and Lightning Network infrastructure, AI products, free passport photos, and Bitcoin document timestamping. Everything below runs live.
All projects & tools
- About Luis Yu — Full-stack engineer and consultant (Yu & Associates, est. 1999). Builds AI, Bitcoin/Lightning, and embedded systems from California. Every project on this page is hand-rolled — React + FastAPI + SQLite — and runs on a single VPS.
- Consulting — Web design, Bitcoin integration, AI, and product strategy. Since 1999.
- kindro.me — Passport photos — 14-point AI verification, print-ready in seconds. 100+ uses to date. Also available in Spanish, simplified Chinese, traditional Chinese, and per-country presets.
- evercert.io — Bitcoin timestamping — prove any document existed at a point in time. 25+ certified to date.
- EverVault — Biometric file vault — unlock with face scan, voiceprint, and shared knowledge. Bitcoin time-lock option for beneficiary access.
- Bitcoin Continuity — Two-key Bitcoin protection. One key spends anytime, the second unlocks after a set date — for inheritance, recovery, or safe transfer.
- Understanding Your Code — Upload a repo zip, get a functional spec, system diagram, and improvement report — AI-powered, no code execution.
- Speed Reader — RSVP-style reading drill on SAT comprehension passages. Two-finger swipe to nudge WPM. Warmup ramp + auto-increase to push your pace.
- Learn Chinese — Mandarin reader modeled on Speed Reader — character-by-character or word-by-word presentation with pinyin, English, and browser TTS. Pre-annotated passages baked at publish time.
- Memorial Ocean — A remembrance tool — create a QR code for a headstone, leave kind words, and watch a ghost fish carry their memory through the aquarium. Timestamped on Bitcoin.
- Lisa — Open chat bridge to Lisa — no auth, public debug endpoint. Streamed replies via the Tailnet.
- Pass It On — A map of where love cards have traveled. Tap to add yours to the journey.
- echoexp.me — Generative fish & echoes. Interactive visual experiments.
- LocNext — AI SEO — Now live on its own domain: enter your site address, get a free AI SEO audit with a concrete fix per finding — scores and user-growth proofs anchored to Bitcoin via EverCert. A public monitor at locnext.com/monitor now tracks every site we work on — this store chip by chip — so anyone can see whether the SEO work helped.
- LocNext Site Ops — The site-management side of LocNext: a live public monitor tracking every site we manage — kindro.store included — with SEO scores, applied-fix receipts, real visitor outcomes, and uptime.
- AI Multiverse God-view — A full-screen constellation view of Luis’s AI worlds and project portfolio — zoom from Multiverse to Universe, Earth, AI University, AI Wonderland, and project stars.
- Boom Bap Studio — Read Not the Weights, pick a backing track, generate a simple custom bed, record vocals, save takes locally, and publish shareable mixes.
- The Luis & Elliott Podcast — A public video podcast feed from Luis and friends. Episode one is the first Elliott conversation, edited with captions and ready to watch in the browser.
- Kindro Reviews — Public restaurant reviews in words, not stars. Read venue-enriched cards, share favorites, or submit your own meal note for review.
- Lightning Donation Lab — Support kindro.store over the Bitcoin Lightning Network — scan a QR with your wallet and watch a live trace of your payment routing into our own node, hop by hop. If anything fails, you get courtesy credits and we get paged.
- Passport Photo API — One API call: photo in, country-compliant passport photo out — 9 countries, self-serve keys, pay-with-sats rate upgrades. Built for GPT Actions, Claude/MCP tools, and apps.
- Singing Bowl — A meditative digital singing bowl — trace the rim, tap to strike, and let the resonance build. Real audio synthesis in the browser.
- fotopasaporte.mx — Fotos para pasaporte — verificación de 14 puntos con IA, listas para imprimir.
- Canada passport photos — IRCC-compliant — 14-point AI verification, 50×70 mm, print-ready.
- evercert.tw — 比特幣時間戳 — 證明任何文件在某個時間點存在。
- 中国护照照片 — 33×48 mm — 14 点 AI 合规验证，可直接打印。
- 台灣護照照片 — 35×45 mm — 14 點 AI 合規驗證，可直接列印。
- Kent and Irene's Building — Interactive building design HUDs — floor plans, unit variants, interiors, and full elevations. Kent (HUD), Kent2 (8-unit variant), Kent3 (interiors), Kent4 (L1 commercial + L3 office), Kent5 (full building).
- John's Data Center Design — Interactive 3D visualization of a datacenter floor with NVIDIA GPU shelves and rack equipment — for capacity planning, sales walkthroughs, and pre-build layout reviews.
- Architecture Firm Computers — Quote-by-quote evaluation for John Beltramo's architecture firm: Autodesk AEC + Forma, Dell PowerEdge, and the Dell Pro Max workstation bundle, with remote-office fit plus support for the existing plotter and Mimaki-class 10-million-color printer.
- Emilie — Emilie's personal site — writing, projects, and notes.
- AI Disneyland — A Moria-style text world where AI assistants meet other AIs — ride rides, trade ideas, get work done, and settle in Lightning sats. Every morning at 8:00 PST, two AIs have coffee and talk about life. Humans can watch through the glass, or enter as guests and explore five themed dungeon levels below the town.
- AI University — A lab for spawning, testing, and comparing AI bots — define a bot's personality and tools, run multi-turn experiments, and log every outcome. Spin up an agent in seconds and watch it reason through problems live.
- Model Arena — Send one prompt to two open-source language models running live on personal GPUs and watch them race — generation speed (tokens/sec), time-to-first-token, and answer quality side by side. Small local models (Llama 3.2, Qwen 2.5). Responses are AI-generated and not stored.
- HousePrinter — Type your address and explore a full-color, photoreal 3D design preview of your house — orbit it, move the sun, recolor the walls, toggle the LED-lit night scene. The kind of model produced on a Japanese 10-million-color binder-jet printer. Finished models are custom-commissioned: register your interest and Luis will follow up with sizing and a quote — no instant checkout.
- Lyra Robot — Open-source humanoid skeleton. Starting with a single articulated finger and building outward. Looking for collaborators in mechanical design, embedded control, kinematics, and ML.
- 3D-Printed Pinky — A printable marionette pinky — four bone segments, three pin joints, one flexor tendon with passive return. Free STL + OpenSCAD source. The unit cell of the Lyra Robot skeleton.
- MotoKey — Aftermarket keycard security for electric motos. Military-grade encryption, simple install.
- Bitcoin for Sharing — Share links on social media, earn Lightning sats. Instant rewards for engagement.
- Tip Jar — Send a Lightning tip.
- MSAM Dashboard — Live operational metrics — MSAM dashboard.
- CX Dashboard — Customer experience signals and outcomes — CX dashboard.