Well, there it is. Velleman PCS500.
Hooked up to a Pittman GM34423E066-R7 3phase brushless supermagnet gearmotor handcranked as a generator for 6 green 3mm straw hat 2.8-3.2V LEDs put into the 3 holes.

What a day though. Came with bad power supply. Ground the flathead security screws of it down with a carbide rotary drill. Inside the transformer coils desoldered reads0.4 ohm secondary(quite fat wires to where it's believable) and 45 ohms primary. Inside there is the two coil transformer, 4 diodes and a 1000uF capacitor. But it won't get 9VAC on the desoldered secondary. It's not shorted unless you call the 0.4 ohms a short. I still don't know whats wrong with it, I'll figure it out later. Luckily I had another power supply 9V 0.6A of the same plug type, which I'm using now. Fixed that problem, but now it would not calibrate. Sometimes.

So my Toughbook CF-29 LPT port has hiccup issues. Flatline "transient recorder" mode with probe tip grounded gets all kind of garbage jumps and spikes. So that above is from an Presario R3000 with properly functioning LPT port. Probe tip clipped to the diode legs, and motor cranked back and forth a few gearmotor turns.I don't have good data on what comes off the control-measuring section of the motor, but this scope is gonna be the tool to figure that out. I might be ultimately able to use some of these motors for bicycle assist type stuff. Not too much, just to keep the bike rolling on flat terrain without pedaling We'll see.