https://um9i.github.io Rob Horton — software developer building open-source tools for logistics and manufacturing en-gb https://um9i.github.io/2026/04/18/the-paper-trail-problem https://um9i.github.io/2026/04/18/the-paper-trail-problem Sat, 18 Apr 2026 00:00:00 GMT Most processes that ru*n* *o*n paper *c*ou*l*d be software. Enterpr*i*se vendors know this, but they're selling to enter*p*rises. The gap underneath is where I keep ending up. https://um9i.github.io/2026/04/12/building-proof-of-delivery-for-the-nhs https://um9i.github.io/2026/04/12/building-proof-of-delivery-for-the-nhs Sun, 12 Apr 2026 00:00:00 GMT NHS hospitals track deliveries between stores and wards on paper. Signature sheets go missing, wards dispute receipts, and nobody can prove anything. I built an open-source system to fix that. https://um9i.github.io/2026/04/04/creating-music-on-fedora https://um9i.github.io/2026/04/04/creating-music-on-fedora Sat, 04 Apr 2026 00:00:00 GMT JACK, PipeWire, Guitarix, Ardour, and a Komplete Audio 1 on Fedora 43. Every problem I hit and how I fixed it. https://um9i.github.io/2026/03/16/introducing-erpv https://um9i.github.io/2026/03/16/introducing-erpv Mon, 16 Mar 2026 00:00:00 GMT Two small businesses, two independent ERP systems, real-time purchase order sync between them. No EDI, no middleware. Here's how it works.