Hi

I've been having a battle with a stepper motor project. I think the problem
could be with the stepper motor itself.

After a lot of struggle getting the wires figured out I got the motor to move
in the CW direction. When I applied the reverse bit sequence the stepper
quivers. It works fine CW. I have tried about every bit sequence  and used
INCF and DECF on all the sequences. Some of the arrangements caused the
stepper to move in CW direction when the CCW button was pushed, but never CCW.

Any ideas?

Maybe I am just brain dead. It is a 6 wire linear 12v stepper, 2 power wires
and 4 coil wires. I have ordered some more steppers with docs, as soon as I
get them I can give then a try.

tHANKS

jON

BACKGROUND-------------------

I rearranged the wires on the motor

FROM            TO
1----           2----
2----           1----
3----           4----
4----           3----

When I did this the motor would now turn CCW and no bit sequences would turn
it CW.


This sequence works using INCF in both wiring schemes- the 1234 wiring scheme
turns CW and the 2143 turns it CCW

STEP
    ADDWF   PCL, F          ;full step
    RETLW   B'00000110'
    RETLW   B'00010100'
    RETLW   B'00010001'     ;WORKS IN CLOCK WISE DIRECTION
    RETLW   B'00000101'

Using 1234 wiring scheme and these bit sequences will not produce CCW turn.
Using 2143 wiring scheme and these bit sequences will not produce CW turn.

1234 wiring scheme

STEP2
    ADDWF   PCL, F          ;full step
;   RETLW   B'00000101'
;   RETLW   B'00010001' ;INCF BINDS
;   RETLW   B'00010100' ;DECF TURNS CW OK
;   RETLW   B'00000110'

;   RETLW   B'00010100'
;   RETLW   B'00000110'
;   RETLW   B'00000101' ;DECF TURN OKAY CLOCK WISE
;   RETLW   B'00010001' ;INCF BINDS

;   RETLW   B'00010001'
;   RETLW   B'00000101'
;   RETLW   B'00000110' ;DECF MAKES THIS BIND
;   RETLW   B'00010100' ;INCF MAKES THIS TURN CW

;   RETLW   B'00000101'
;   RETLW   B'00010001' ;INCF BINDS
;   RETLW   B'00010100' ;DECF TURNS WELL CLOCKWISE
;   RETLW   B'00000110'

;   RETLW   B'00000110' ;INCF MOVES CLOCK WISE OK
;   RETLW   B'00010100' ;DECF BINDS
;   RETLW   B'00010001'
;   RETLW   B'00000101'

;   RETLW   B'00010001' ;DECF BINDS
;   RETLW   B'00010100' ;INCF BINDS
;   RETLW   B'00010100'
;   RETLW   B'00000110'