[Duaneglee]

Hi everyone, I have a question about how to connect a single axis driver board to the parallel breakout board. On my first cnc board there is 3 connections for each motor, step, direction, and enable. On this single axis driver board there are 6 connections for +and - step, +and- direction, and +and- enable. My guess is to connect to the + terminals and ground the -'s to the common or ground terminal on the breakout, is this correct or not. Please advise, Aloha, Duane

[john-100]

your first board must of had 4 connections for each axis
( the fourth connection may of been a common connection to the printerport ground )

if the common output on your breakout board is ground / 0V
connect all the negative stepper driver inputs to the common terminal (- step , -dir , -enable)
then connect the BOB's step , direction and enable outputs to the driver positive inputs as required (+ step , +dir , and + enable )

note the enable input is usually negative logic ( active low)
with no signal or if you don't make any connections to the stepper driver enable input the driver will work

if the BOB common output is +5V
connect the + step ,+ dir and + enable to the +5V common
and the BOB outputs to - step , -dir and - enable

you will need to set up in the control software
the step and direction as active low and the enable as active high

John

[Duaneglee]

your first board must of had 4 connections for each axis
( the fourth connection may of been a common connection to the printerport ground )

if the common output on your breakout board is ground / 0V
connect all the negative stepper driver inputs to the common terminal (- step , -dir , -enable)
then connect the BOB's step , direction and enable outputs to the driver positive inputs as required (+ step , +dir , and + enable )

note the enable input is usually negative logic ( active low)
with no signal or if you don't make any connections to the stepper driver enable input the driver will work

if the BOB common output is +5V
connect the + step ,+ dir and + enable to the +5V common
and the BOB outputs to - step , -dir and - enable

you will need to set up in the control software
the step and direction as active low and the enable as active high

John

Aloha John, Thanks so much for the quick reply, I understand, my breakout has a jumper to set the common and now I understand that better too, Thanks again, Duane