K40 Chinese Laser Conversion

Anyone still using the laser conversion board can find all of the resources below:

This plug and play replacement for the Moshi Board enables you to use the full potential of your 40W machine from Linux / Windows / Mac.

There is a web based frontend that will take vector input (.svg or .dxf) and communicate with the control board.

The software functions correctly without a conversion board (other than actually controlling the machine!). Please download the LasaurApp from the links below. This is the best way to determine if this product is suitable for you.

The voltages inside the Laser Engraver are lethal (240 VAC and 25,000 VDC are present). If you don't know what you are doing, please seek professional advice.

Please download, install and use the software before purchasing. 
Verify that either LasaurApp or LaserWeb satisfy your work flow - they are significantly different to the Corel Draw work flow.

Standard Features:

New: grbl 1.1 firmware available for use with LaserWeb 4 GUI only.

Multiple connection configurations supported (please select at order time).

GCode Control via USB Serial.

PWM Power Control.

Raster Image Engraving.

PPI (Pulses Per Inch) Speed de-coupled intensity control.

GPL Open Source Firmware.

DSP Performance.

2x Open Drain Outputs (e.g. Air Assist).

5V Powered USB port for RPi / BBB.

SVG & limited DXF Import via LasaurApp / LazserWeb interfaces.

Multiple passes configurable from frontend as one batch.

Included Extras:

Analogue Joystick control to set the origin

(Also controls the optional cross hair)
 

Optional features:

Networked backend using R-Pi / BeagleBone

 

The PCB stencil pictured above was etched from acetate in raster engraving mode at 600 ppi, 55% power.

 

Documentation

File	Description
Supported_Moshi_Board.pdf	Use this to check compatibility.
Wiring_Diagram.pdf	Conversion board and connectors.
PWM_Wiring.pdf	How to wire up PWM power control.
Stepper_Driver_Adjustment.pdf	How to adjust the stepper drivers (not normally necessary).

 

Linux Users

File	Description
LasaurApp-master.zip	Latest stable version.
LasaurApp	LasaurApp source code (Frontend GUI)
LasaurGrbl	LasaurGrbl source code (Board Firmware) - For use with Lasaur App
grbl-1.1	grbl-1.1 source code (Beta Board Firmware) - For use with Laser Web
lm4flash	Utility to flash the LM4 series MCUs

 

Windows Users

File	Description
LasaurApp-20150720.zip	Windows executable for the software.
laser-usb-driver.zip	Windows USB driver.
spmu287c.pdf	TI Document explaining how to flash the board
Stellaris_ICDI_Drivers_spmc016.zip	USB Drivers for flashing
LMFlashProgrammer_1613.zip	Flash programmer (Select "TM4C123G Launchpad")

 

Supporting Files / Links

File	Description
firmware_67a0aa26f.zip	Latest stable build of the board firmware - For use with Lasaur App. Please be sure to use the correct .bin for your board. The will be white text on the red board saying either "Stellaris" or "Tiva C".
firmware_beta_a81986f.zip	Beta grbl v1.1 port - For use with the Laser Web 4 GUI: https://github.com/LaserWeb/LaserWeb4/wiki This is a beta firmware, so please report any issues; however it shows a lot of promise as a good alternative to LasaurApp.
USB_Stick_Image_1GB.zip Install and Boot Video	This image contains the above tools and LasaurApp pre-installed and ready to go. Just boot your x86 PC from this stick and give it a try. Please extract the .img file from the .zip and flash it with the Win32DiskImager to a 1GB or larger USB stick. Linux users can use dd instead: sudo dd if=USB_Stick_Image_1GB.img of=/dev/sdX bs=1M Replace sdX with the correct device for your USB stick.
Board Support	Adapter plate to mount the replacement board.  This also doubles as a test piece for both raster and cut after installing the board.
InkScape	An excellent free Vector Graphics editor for .svg (and other) files