Not at home to check but....
i had a mod that basically made a "capacitor bank" out of a reskinned battery bank. It would charge "in a few seconds" and provided a few seconds of charge when used (primary use was to have lights stay on after turning them off so you could run out of your base, and to have an alarm go off if electric line broken but only sound for a few seconds. ). It was really just a battery bank where the special batteries hold only a few seconds of power, and charge just as fast. You could tune the charge amounts by putting more/less capacitors (batteries) in.
anyway: maybe if sunlight does not penetrate a nonmoving door/hatch but does penetrate a moving one ypu can do it? Basically: a solar bank is connected to and charging a capacitor bank (takes 1 sec to fully charge) and capacitor bank is hooked to hatch/door. The moment power is applied by solar bank the door/hatch opens and blocks the solar bank, stopping charging of the capacitor bank. The capacitor bank decharges (keeping hatch/door open for a few seconds), then when power is used up, hatch/door closes and solar cell is uncovered, charging the capacitor bank again, and reopening the hatch.
To clarify: think this may only work if the motion of open/close does not block solar charging, but fully closed/open" door/hatch does. This way as the door opens (slowly?) the solar bank has power and has time to charge the capacitor. I think? Once the power runs put and the door/hatch starts closing it will fully animate the close action before reopening vs "fluttering" in a semi open/close fashion.
note: someone else made a capacitor mod thats on nexusmods, though it might charge/discharge significantly slower (and thus not work as well if it works At all).
anyway: if it worked this would be a door opening and closing. Im not aure how you use that other than a camers pointing at the door, but maybe? You could hang a trap off of the door that opens and closes and (because the door uses very little power to trigger) it would also run a dart trap or 2 electrical poles? That may be too much wattage but... if you tweaked the capacitors to hold more charge...maybe?