Thank you for that! I have gone through them on the lowest Ohm setting (which is 200 on my multimeter)
It just showed fairly random jumpy numbers from single to double digits on all of them.
As per above the current wire I am using is 0.85mm enameled copper wire.
Some news in the meantime!
I have liberated the coils from their resin backing. Was hard since I used a tough, flexible resin (which I instantly regret now
)
I have been testing the coils with my rotor, and the numbers are really low, compared to the small ceramic magnet I have. I removed the rotor rod, which is mild steel, in case that messes with the magnets somehow, but no change.
I have considered maybe I ruined the NdFeB magnets with heat, as they are sensitive, but I tested the same NdFeB magnets (ones I have never used) and they induce the same low current. The magnets are strong, doesn't feel like there should be anything wrong with them, and yet the ceramics are seemingly better?
For context, each NdFeB is 100mm x 10mm x 10mm, and the ceramic magnet is 48 x 22 x 10 mm. Not on a rotor, just passing it above the coil, at the same speed and distance it produces about the same current.
Does this mean the limiting factor is not the magnet but the wire? Or is it do with something else?
Also, in any of these cases, it still seems to apply that the faster the magnets move the weaker current I get. Is this just me misunderstanding the readings, or some actual physical effect in the coils, like parasitic capacitance?
Thank you. ^^