JJ H. — 工程、Web 与嵌入式个人站点：工程服务、项目、文章与简历。基于 Astro 与 Tailwind 构建。https://heff.world/OpenMANET radio buildout: pace car mesh comms at Watkins Glenhttps://heff.world/zh/blog/openmanet-radio-buildout/https://heff.world/zh/blog/openmanet-radio-buildout/OpenMANET HaLow mesh build for pace car and track-side comms. Covers hardware, PTT, Watkins Glen layout, and Starlink backhaul.Wed, 24 Jun 2026 00:00:00 GMTjjcodes@me.com (JJ Heffernan)jheff.media-site, from boilerplate fork to a modern Rust media stackhttps://heff.world/zh/blog/jheff-media-site/https://heff.world/zh/blog/jheff-media-site/Commit history of the automotive social landing repo: Yew 0.23, Actix 4, Tailwind v4, unified feeds, and what comes next.Fri, 19 Jun 2026 00:00:00 GMTjjcodes@me.com (JJ Heffernan)Proxmox on OptiPlex 7040s - clustering, self-hosting, and why Traefik plus Caddy wonhttps://heff.world/zh/blog/proxmox-homelab/https://heff.world/zh/blog/proxmox-homelab/Proxmox on three OptiPlex 7040s - LubeLogger, Manyfold, Matrix, and a Traefik + Caddy reverse-proxy stack.Sun, 22 Mar 2026 00:00:00 GMTjjcodes@me.com (JJ Heffernan)heff-shop - Saleor submodules, Docker, and the test build grindhttps://heff.world/zh/blog/heff-shop/https://heff.world/zh/blog/heff-shop/heff-shop Saleor monorepo - platform + forked storefront submodules, Docker smoke tests, multi-channel GraphQL.Wed, 18 Jun 2025 00:00:00 GMTjjcodes@me.com (JJ Heffernan)Stagea Stuff - importing a JDM wagon and why the platform existshttps://heff.world/zh/blog/stageastuff-origin/https://heff.world/zh/blog/stageastuff-origin/Importing a Nissan Stagea, opaque parts supply chains, and starting the stagea-stuff monorepo in December 2024.Sun, 08 Dec 2024 00:00:00 GMTjjcodes@me.com (JJ Heffernan)Django Auto Forum - a car-enthusiast community on Heroku and S3https://heff.world/zh/blog/django-auto-forum/https://heff.world/zh/blog/django-auto-forum/Zip Code capstone on Django-Auto-Forum - automotive forum with S3 media; lineage to stageastuff.com.Mon, 12 Sep 2022 00:00:00 GMTjjcodes@me.com (JJ Heffernan)SimpleGUIChat - from Tkinter pop-out chat to mesh radio and dual PTThttps://heff.world/zh/blog/simple-gui-chat/https://heff.world/zh/blog/simple-gui-chat/A 2022 Python socket chat experiment that grew into MANET radio networking work and dual push-to-talk over IP mesh - lineage from localhost:9090 to field comms.Fri, 22 Jul 2022 00:00:00 GMTjjcodes@me.com (JJ Heffernan)Formula SAE spool statics - chain tension, bearings, and bolt torquehttps://heff.world/zh/blog/fsae-spool-static-calcs/https://heff.world/zh/blog/fsae-spool-static-calcs/MATLAB scripts for Lehigh Racing LR21 drivetrain statics - chain back-tension, spool shear/moment, Von Mises stress, and mount bolt specs.Thu, 15 Apr 2021 00:00:00 GMTjjcodes@me.com (JJ Heffernan)Summer 2020 - Lexus superchargers, prototypes, and real manufacturinghttps://heff.world/zh/blog/summer-2020-internship/https://heff.world/zh/blog/summer-2020-internship/R&D internship notes on 3D modeling supercharger prototypes, domestic and overseas suppliers, and why CAD on screen is not the hard part.Tue, 01 Sep 2020 00:00:00 GMTjjcodes@me.com (JJ Heffernan)