[simpits-tech] Stepper Controller V2.1

[Stig Joergensen]

SPI Interface - what is that?

Anyway, this the connector descriptions :

J1: (IO to PC)
  Signal 2
  Signal 1
  Step
  Direction
  +12v
  gnd
  +5v

J2: (To Stepper)
  Common Coil
  Coil 1
  Coil 2
  Coil 3
  Coil 4

J3 / J4: (To/From Sensor)
  Signal
  Gnd
  +5v


The idea for J3 and J4; connection to an optical sensor where +5v and
GND is connected to a light source and +5v and signal is connected to a
phototrans. and the signal from this sensor is carried through to J1 as
Signal 1 resp. 2 (for boundary checks).

you connect the power mains to GND, +5v and +12v. the direction when
high lets the stepper "half step" one way and when low the other way
when the Step-pin goes high.


Im about to make an expansion board, so you can control 15 steppers with
sensors on 8 a bit IO port. the downside is that you can only rotate one
stepper at a time. but more on that later....


/Stig






> -----Original Message-----
> From: Gene Buckle [mailto:geneb@deltasoft.com]
> Sent: 18. februar 2002 20:51
> To: simpits-tech@simpits.org
> Subject: Re: [simpits-tech] Stepper Controller V2.1
> 
> 
> 
> Stig, does this operate on an SPI interface?  How do you talk to it?
>