// from the notebook
Writing & build logs.
Where I am, what I'm building, and what I'm reading right now.
PWA
Oct 3, 2026
How to Save GPS Location with a PWA (and Export It as .txt)
Build a PWA that saves your GPS location to a local table and exports it as a text file. Full code included, using the browser's built-in database.
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PWA
Oct 1, 2026
How to Detect Phone Movement with a PWA (Accelerometer)
Read your phone's motion sensor from the browser. Detect tilts, shakes and movement with plain JavaScript — no app required.
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PWA
Sep 28, 2026
How to Make a Button That Vibrates Your Phone with a PWA
Build a simple PWA with a button that vibrates your Android phone. Full code included: HTML, JavaScript, manifest and service worker.
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PWA
Sep 28, 2026
What Is a PWA? A Website That Acts Like an App
A quick, plain-language intro to Progressive Web Apps: websites you can install on your phone and use like real apps.
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