Guys-
It appears that the stepper motors are acting just like the old
servo motors but have the advantage of being both readily
available and cheap. That's good to know.
Phil
On 7/29/2024 12:31 PM, Eric via
groups.io wrote:
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I saw
it with my own eyes and still don't believe it.? Spooky action
through a cable.
73, Eric NF6S
ex WD6DBM
?
On Mon, Jul 29, 2024 at 10:31 AM, HOWARD POMERANTZ
Very clever Hiroki. Do you know the max distance the
induction solenoids(?) will reach? Just curious
On Jul 27, 2024, at 7:32
AM, Hiroki Kato <
hiroki@...>
wrote:
While
taking apart a 3D printer recently, our friend Jeff
Reagan, AJ6WX, discovered an interesting
electro-mechanical?phenomenon. When you connect
two?identical stepper motors in parallel and
manually turn one motor the other motor
turns?exactly the same way, clockwise or
counter-clockwise. One motor works as an electric
power generator and the power thus generated is
sufficient to turn the other motor. Jeff thought
that?such a two-motor combination may work to built
a?remote?control system for a?magnetic loop. He gave
me the two motors from his canniibalized 3D printer
for me to experiment.
I
built a prototype this week and field-tested it
yesterday. Here it is. Every part of this
construction is from my junk box. The reduction gear
is from a WWII military radio BC348's dial
mechanism. ?The capacitor is a vintage butterfly
capacitor about 60 pf. ?A discerning eye may notice
Erector parts, my favorite old-timer's 3D printer.
The antenna covers 17, 15, 12 and 10m. The remote
control worked smoothly and easy to use.?
Hiroki
AH6CY
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