Description:

This Parallel Port Breakout board allows a computer's parallel port to control all the signals needed for controlling stepper motors on a 5 axis CNC machine.  5 inputs allow for limit switches or e-stop switches.  This board can be used on any PC with a parallel port, or it can be used with the Raspberry Pi Parallel Hat on a Raspberry Pi.  

The 3D printable mount is available here: Pi Parallel Hat and Breakout Board Stand v8

Product description:

• Size : Approx 90*61*15mm

• Cable Length : Approx 50cm

• Weight : Approx 85g (3oz)

Features :

• Full support for MACH3 on Windows and Linux CNC (PC or Raspberry Pi). Both utilize the parallel port control.

• USB power supply and peripherals powered phase separation to protect computer security.  

• Peripheral wide voltage input,12-24V.

• All of the input signals are opto-isolated. 

• Output port P17 controls the relay.  This is most commonly used for spindle on/off.  Please be careful when turning DC power on and off and use an external diode to reduce inductive kickback voltage.

• Output port P1 port controls the PWM output to the spindle.  This is most commonly used with a VFD.

• With 17 available controllable signals, a 5-axis machine with stepper motors can be controlled.

• Each output is a buffer that can be used as common cathode or common anode at 5V to control the opto-couplers on the stepper drivers. 

Package included:

• 1 x 5 Axis Breakout Board (No manual)
• 1 x USB Cable