Progress notes from my engineering and software projects.https://marioschoch.chenhttps://marioschoch.ch/projects/velove-website/#2025-10-10-velove-first-deployhttps://marioschoch.ch/projects/velove-website/#2025-10-10-velove-first-deployThe first version is live on a preview URL. Session dates now come from a single data file, and the home page scores 98 on mobile Lighthouse. Next: review with the board.Fri, 10 Oct 2025 00:00:00 GMTVELOVE Website Rebuildhttps://marioschoch.ch/projects/velove-website/#2025-09-15-velove-kickoffhttps://marioschoch.ch/projects/velove-website/#2025-09-15-velove-kickoffCollected feedback from volunteers and students about the old site. The clear winner among requests: show the next repair session on the front page, with date, time and location.Mon, 15 Sep 2025 00:00:00 GMTVELOVE Website Rebuildhttps://marioschoch.ch/projects/delivery-robot/#2025-05-02-robot-shooter-v2https://marioschoch.ch/projects/delivery-robot/#2025-05-02-robot-shooter-v2The first shooter undershot by about 30 %. After measuring the actual spring constant on a tensile tester, I redesigned the cam profile. Landing accuracy at 1 m improved from ±40 mm to ±12 mm across 20 test shots.Fri, 02 May 2025 00:00:00 GMTLine-Following Delivery Robothttps://marioschoch.ch/projects/delivery-robot/#2025-03-14-robot-first-track-runhttps://marioschoch.ch/projects/delivery-robot/#2025-03-14-robot-first-track-runAfter two weeks of tuning, the prototype completed its first full lap without leaving the line. The PID controller still oscillates on tight curves, so the next step is adding a derivative filter and logging sensor data at higher frequency.Fri, 14 Mar 2025 00:00:00 GMTLine-Following Delivery Robothttps://marioschoch.ch/projects/bmc-hinge-fork/#2024-12-20-hinge-fork-reporthttps://marioschoch.ch/projects/bmc-hinge-fork/#2024-12-20-hinge-fork-reportSubmitted the final report with the comparison between the hinge fork and a rigid reference fork. Key takeaway: the hinge buys a lot of comfort for very little lateral stiffness.Fri, 20 Dec 2024 00:00:00 GMTDesign Analysis of the BMC Hinge Forkhttps://marioschoch.ch/projects/bmc-hinge-fork/#2024-11-08-hinge-fork-fe-modelhttps://marioschoch.ch/projects/bmc-hinge-fork/#2024-11-08-hinge-fork-fe-modelMesh convergence study done: refining the hinge region below 1 mm element size changed peak stresses by less than 2 %, so the model is good enough for the comparison study.Fri, 08 Nov 2024 00:00:00 GMTDesign Analysis of the BMC Hinge Fork