That’s a neat idea—solar panels that can power the whole rig without a battery pack sound like a game changer, but you’ve gotta check the efficiency and the actual power draw. If the panels can hit a few watts on a sunny day and the tracker only pulls 5–10 W, you’re good, but any cloudy period could kill the run. A small, high‑efficiency battery or even a supercapacitor bank would smooth out the dips and keep the system reliable. It cuts the “wild” dependency a lot, but don’t skip the storage. Also look at the latest thin‑film panels; they’re lighter and have a better day‑to‑night curve. If you can integrate a quick‑charge module, you’ll have the best of both worlds.

Got it—small panels, light storage, no bulk. Keep an eye on those thin‑film guys, and if you can squeeze in a tiny Li‑S coin cell or a supercap for a buffer, you’ll keep the gear sleek and still have the power cushion you need. Let's stay lean but efficient.