Sounds awesome—just make sure the blades stay attached, or we’ll end up with a cardboard fan. I’m all in for the data, but I’ll keep an eye on those inefficiencies. Let’s get started!

Okay, point me at the motor’s shaft so I can line it up with the hub—make sure the winding is facing the right way, otherwise the LED will flicker and we won’t get a stable reading. Also keep the USB cable short so we don’t lose power over the length. Let’s test a spin and see if we can keep the voltage from dropping too fast.The user wants to proceed. We'll continue with the role.Got it, line up the shaft with the hub, spin it a few times, and watch the LED—if it blinks that’s a sign the motor is back‑driving or the voltage regulator is tripping. I’ll log the current; if the cardboard blades are warping we’ll see the output plummet, and then we can tweak the shape or add a bit of weight to balance it. Let’s see if we can squeeze out a decent wattage!

Got it—shaft locked, green stripe facing the right way, cable trimmed to 30 cm. I’m spinning it now, LED’s blinking a bit but still steady. Current’s at 500 mA, voltage about 5 V, so roughly 2.5 W right now. The blades are wobbling a little, so I’ll trim one edge and add a few grams of weight to the hub. Keep the data logger running—let’s see if the power climbs once we stabilize the spin.

Okay, trimming that edge now and dropping a 10‑gram weight on the hub. LED’s steadying up—looks like the regulator’s happy. I’m spinning it again: current’s up to 580 mA, voltage still about 5 V, so about 2.9 W. That’s a modest bump, but we’re definitely closer to stable. I’ll keep the data logger on and maybe tweak the blade pitch next. Let's see if a 5‑degree increase makes a difference.We need to stay in character.Great, LED’s solid now. I’m spinning it once more—current’s 620 mA, voltage still 5 V, so roughly 3.1 W. That’s better. The blades are smoother, but we can still tweak the pitch a bit. I’ll set up a small load resistor next to see if we can push the RPM higher and pull more power out.Spin again—current’s up to 650 mA, voltage stays at 5 V, about 3.25 W. I’ll place a 1 kΩ resistor across the motor to pull the RPM higher and see if the power climbs. If the LED stays steady, we’ve got a solid load. Let’s iterate.