CNC Simpel Breakoutboard V 1.1

(c) 2009 WWW.STAPPENMOTOR.NL

CNC Breakout Board Simple with step and direction

This Simple CNC Breakout board is used to connect an LPT port to one ( or more ) steppermotor(s) or servomotor(s) in an easy way.

Pin 2-9 Out To CNC steppermotor or servomotor drivers

Switches In

PowerOut

DB-25

13 12 11 10 15

1141617

+ 5Vout + 5Vout GND GND

Led 9 8 + 7 6 5 4 + 3 2U

SBin

Pwr

inRelais Out

CNC Simpel Breakoutboard V 1.1

(c) 2009 WWW.STAPPENMOTOR.NL

Power input Power ( +5V ) is supplied by means of a USB cable. This cable can be connected to either a separate powersupply or to the computer through the USB port. If there is power, the LED will turn on, indicating there is power.

Led Led will turn on if there is power to the board. ( USB input )

DB-25 connector The DB-25 connector is usually connected to the LPT port of the cnc system.

Switches input connector The switches ( for example home switches ) can be connected on this connector. The pins of this connector are connected to pin 10,11,12,13 and 15 of the LPT connector ( BD-25 ).

Step/dir output connector The drivers of the cnc system are connected to this connector. The contacts are connected to pin 2-9 of the LPT ( DB-25 ) connector.

Relais output There are 4 output signals that can be used for switching something ( for example a relais to turn on a milling motor, or cooling mist )

Power output This is the ouput of the GND and +5Vdc of the board. This can be used to power some extra items, like a pulsgenerator of some sort.

CNC Simpel Breakoutboard V 1.1

(c) 2009 WWW.STAPPENMOTOR.NL

CNC connection example This is an example of how to connect a CNC system to the board. There are of

course a lot of different ways to connect a CNC system.

DB-25

13 12 11 10 15

1141617

+ 5Vout + 5Vout GND GND

Led

9 8 + 7 6 5 4 + 3 2USB

in

Computer

LPT Port ( DB-25)

Opt

oD

ir-

Pul-

MSD-32-2.5

A+

A-

B+ B-

MSD-50-5.6

Dir

+D

ir-

Pul+

Pul-

A+

A-

B+ B-

Home switch1

SteppermotorSteppermotor

Home switch5Relais

R

fuse

CNC Simpel Breakoutboard V 1.1

(c) 2009 WWW.STAPPENMOTOR.NL

Mach 3 configuration matching the above example.