I read about 36 mA running just the MegaBitty, so the motor is drawing about 153-36=116mA
The scope is on 0.2 Volts-per-division, and is showing +/- 2.4 divisions which is +/- 0.48 Volts. This represents 0.48/2.2=218mA Peak current
Start with a cylinder of ferrite from some old piece of equipment. I got mine from an old video card. Chuck the ferrite in a variable speed drill. Get a nice bundle of wire and stuff it inbetween two of the chuck arms.
Start the drill slowly, and guide the wire as you wind. I found out that even if I stopped well before the end of the ferrite core, the wire fell off the end of the core after a few layers.
On this one, I superglued a small piece of wood to the end of the core before starting to wind, and it made a nice coil. I put superglue on the wire after I was done winding it to hold the whole mess in place.
I read about 36 mA running just the MegaBitty, so the motor is drawing about 42
The scope is on 0.2 Volts-per-division, and is showing +/- 0.5 divisions which i
s +/- 0.1 Volts. This represents 0.1/2.2=45mA Peak.
The ratio of before-and-after supply currents is 116/6=19 and the ratio of befoer-and-after motor peak current is 218/45=4.8