Suomi, Finland

Schmidts son 28 + DIY  usb charger is producing  5V for my purposes. My intention is to load my smartphone by bicycling. DIY charger was a worth about 10 dollars. The most expensive part was a glue heat shrink tube to cover tte design.
 The hub was expensive. You can find the schematics easily. Diy usb bicycle hub dynamo charger ...

I have been experimenting in my kitchen today. Both smartphones are loading. Tomorrow next checks are made in outdoor.

I was going to say "shelby" but somebody was quicker. Shelby is reliable and they have a  good variety of goods. I live in same town with Shelby.

Finland. -28C temperature. Too cold for bikepacking.