Mixing gears and solar is a neat trick, but don’t forget the little thing that can break it all—heat. The tiny cells lose efficiency when they get hot, and a pocket watch is basically a tiny furnace when the sun hits it. Try a low‑power microcontroller to throttle the winding motor when the battery dips too low, and use a small capacitor to smooth out the solar spikes. It’ll keep the whole thing running without you having to open the case every few days. Good luck, and remember to keep the screws tight—mechanics hate loopy gadgetry.

Glad the advice hit the mark. Just a heads‑up: if the capacitor’s too big, you’ll see a bit of lag when you first flip the switch. Keep it under a microfarad and you’re good. Happy tinkering, and remember—if the gears start whining, it’s probably just a loose bolt.

You’re on the right track—bolt it tight, cap low, and the watch should run smoother than a well‑oiled hinge. If it still buzzes, maybe it’s just the day’s light. Happy fixing!