🚀 go-pugleaf

Hi All,

With regards to my original questions regarding the control of a stepper
motor, I have recently discovered that this is not actually a stepper
motor but a 3-phase motor.  The actual part is a Tohoku Ricoh type
7M100200 with ratings of DC24V, 0.2A, 48W.  This 3-phase motor is part
of an optical housing assembly from a laser assembly which also includes
a laser drive assembly and scanning mechanicals.  What I need to know
is, how to operate and control this stepper motor, how to operate and
control the laser, and how to replace the laser diode with which
produces a visible beam.  For further project description and 3-phase
motor pin numbers and names, see below.

 Any help would be greatly appreciated.  Thanks for any help in advance.
 Comments and suggestions are welcome.

 Glen Mead

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 Project Summary:

By utilizing the optical housing from a laser printer and replacing the
laser diode with one of a visible wavelength, a display type laser
device can be constructed providingproper control circuitry is utilized.
Scanning functions would be provided by mirrors mounted on a 3-phase
motor assembly and a series of focusing lenses and mirrors.  Graphics
would be generated by turning the laser on and off at specific places
(determined by the frequency and duty cycle of the control waveform)
during each scan. Timing of the 3-phase motor and laser would be based
on a sync pulse generated in the optical housing assembly at the end of
each scan line.


 3-Phase motor pins:

 1 - W-Phase
 2 - V-Phase
 3 - U-Phase
 4 - H-W2
 5 - H-W1
 6 - H-V2
 7 - H-V1
 8 - H-U2
 9 - H-U1
 10 - H-GND
 11 - H-VCC
 12 - FG1
 13 - FG2

 NOTE: The H-??? pins are power and output pins for Hall elements,
 something else I could use a hand with. :-)
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