LAOS Laser

{{>toc}}

h1. K40-III

This is a cheap Chinese built laser that comes with a couple of different control boards, and some proprietary software.

h2. Control board - 6c6879

This board uses a flat ribbon cable for X axis motor and both X and Y limit sensors, a 4 pin JST connector for the Y axis motor, and a 6 pin connector for power and laser control.

!controller.jpg!

h3. Connectors

h4. Y stepper cable

|Color|Signal|Connect to|

|RED|XA+|J18.2 A|

|BLUE|XA-|J18.3 A|

|YELLOW|XB+|J18.4 B|

|WHITE|XB-|J18.5 B|

!DSC_3647.jpg!

h4. Flatcable for X stepper and endstops

|_.Pin|_.Signal|_.Connect to|

|PIN12|XA-|J24.1 A|

|PIN11|XA+|J24.2 A|

|PIN10|XB-|J34.3 B|

|PIN9|XB+|J34.4 B|

|PIN6|COMMON|J34.4 GND|

|PIN5|XHOME|J34.2 XHOME|

|PIN4|YHOME|J34.3 YHOME|

|PIN3|+5V|J34.1 Vsensor|

!783px-HPC-flat-cable-pinning.jpg!

h4. Power and Laser

|_.Pin|_.Signal|_.Connect to|

|1|Not Connected||

|2|Laser||

|3|5V||

|4|Not Connected||

|5|24V||

|6|GND||

h2. PSU 

!PSU.jpg!

The PSU has 4 connectors.

1. K+/K- - Laser Test button

2. G/IN/5V - Power control potentiometer

3. D+/D- - Laser enable/safety interlock

4. 24V/G/5V/L - Power to controller board

h2. Hooking it up

[[K40-III 6c6879 Connections to Laos board]]

[[K40-III Material Settings]]

[[K40-III Improvements]]

h2. Other Notes

This machine is not what you'd call up to standards. Please bear in mind that there is no:

* Lid sensor

* Sensor to see if water is flowing

* Laser temperature sensor

* Cutting area temperature sensor to monitor for fire

* Extractor sensor to make sure fumes are being extracted.

Buy and operate this machine at your own risk. It is cheap, but you get what you pay for. In the [[K40-III Improvements]] will be some circuits to overcome some of these issues.