Vectric Cut2D Post Processor for Laser Cutter

 

In this episode, we will look how to a create a post processor file for Vectric Cut 2D to drive the laser cutter on our Probotix Fireball v90.  This should also work for all GRBL based machines like the Shapeoko or the XCrave too.  Below is the code for the millimeter based post processor file:

 

500MW DIY laser Engraver engraving machine Picture CNC Printer 17cm X 22cm

by Mega Save [Mega Save]
Rank/Rating: 1045541/-
Price: -

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608ZZ Bearing to V-Slot Maker Wheel

 

We have been experimenting with the common 608ZZ ball bearing to make cheaper V-Slot style maker wheels.  In this Tinkercad file is an exploded view of the 608ZZ bearing and the 3D printed parts to covert the common bearing into a V-Slot maker wheel.  Worth note these are larger in diameter than the standard V-Slot wheels so they will not work with the standard plates so that is next on the list to draft up a set of standard plates to use with these.

 

To print these, simply delete the bolt and bearing placing the remaining parts flat on the work plane.

30 Bearing 608ZZ 8x22x7 Shielded Greased Miniature Ball Bearings

by BC Precision [BC Precision]
Rank/Rating: 23013/-
Price: $13.52

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Dwell Issue with GRBL Using a Laser

Appears there is a delay in GRBL (v0.9) with the issue of the M03 spindle direction command GRBL will delay its movement to allow time for the spindle to spin down, reverse and spin back up.  So instead of using M03/M04 for rapids, we have switched to using PWM (Pulse Width Modulation) using S0 to set to the lowest level (basically off) and S1000 for full power.

Arduino Uno 3 Ultimate Starter Kit Includes 12 Circuit Learning Guide

by Vilros [Vilros]
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Price: $54.99

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Probotix Fireball v90 with 2Watt Laser!

In this episode we will fire up the Probotix Fireball v90 with the 2 Watt laser and cut some stuff. We are using the gcode from the J-Tech Photonic Inkscape plug in bu the machine seems to be waiting for several minutes after reach the start position in line 12. Below is the Gcode:

500MW DIY laser Engraver engraving machine Picture CNC Printer 17cm X 22cm

by Mega Save [Mega Save]
Rank/Rating: 1045541/-
Price: -

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Using Inkscape winth J-Tech Photonics PlugIn for Laser Generating Cutting GCode!

In this episode we will look at using Inkscape (inkscape.org/en/download/windows/) and the J-Tech Photonic (jtechphotonics.com/?page_id=1980) plugin to Gcode for a laser cutter/engraver.

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Spindle and Laser Control for CNC Router using Gcode

In this episode we will look at using a dual relay board (amzn.to/1MeJCmN) connected to the GRBL controller to on and off either a spindle or small laser attached to the mill (we will be adding a 2 watt laser in another episode).  This is is current using pin 13 which is set control spindle direction as in stand PWM mode pin 12 for spindle enable does not respond to gcode commands and requires a change in the configuration.f and a recompile with upload.  I got the below table from (www.shapeoko.com/forum/viewtopic.php?f=3&t=5803) and it is a good reference if you want to make changes.

 

Disabling VARIABLE_SPINDLE will revert Grbl to the old pin layout, where spindle enable is on D12 and direction on D13. With it enabled, spindle enable/PWM is on D11 and direction on D13.

EDIT: Here’s a chart to make it a bit clearer.

VARIABLE_SPINDLE enabled:
D11 = Spindle enable/PWM speed
D12 = Z-limit
D13 = Spindle direction

VARIABLE_SPINDLE disabled:
D11 = Z-limit
D12 = Spindle enable (on/off only)
D13 = Spindle direction

VARIABLE_SPINDLE and USE_SPINDLE_DIR_AS_ENABLE_PIN both enabled:
D11 = Spindle PWM speed only
D12 = Z-limit
D13 = Spindle enable (on/off only)

 

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3D Printed Dual Relay Board on the DIY QU BD TwoUp Printer

In this episode of DIY 3-D tech.com will look at building a 3-D printed board for dual relay controller. As part of this we also have to use care is this relay board will switch line voltages so if you notice we’ve left the bottom on the board to protect and insulate from this. It’s also worth noting that conductive plastic should not be used print support boards for electronic components. In addition if you’re interested in finding out about this board you can get more information at this link (amzn.to/1KTA5nQ)

5V Two 2 Channel Relay Module With optocoupler For PIC AVR DSP ARM Arduino

by Satisfy Electronics [satisfyelectronics]
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