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K40-III » History » Version 1

darrenp, 2012-12-03 15:49

1 1 darrenp
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h1. K40-III
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This is a cheap Chinese built laser that comes with a couple of different control boards, and some proprietary software.
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h2. Control board - 6c6879
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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.
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!controller.jpg!
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h3. Connectors
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h4. Y stepper cable
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|Color|Signal|Connect to|
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|RED|XA+|J18.2 A|
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|BLUE|XA-|J18.3 A|
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|YELLOW|XB+|J18.4 B|
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|WHITE|XB-|J18.5 B|
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!DSC_3647.jpg!
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h4. Flatcable for X stepper and endstops
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|_.Pin|_.Signal|_.Connect to|
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|PIN12|XA-|J24.1 A|
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|PIN11|XA+|J24.2 A|
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|PIN10|XB-|J34.3 B|
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|PIN9|XB+|J34.4 B|
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|PIN6|COMMON|J34.4 GND|
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|PIN5|XHOME|J34.2 XHOME|
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|PIN4|YHOME|J34.3 YHOME|
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|PIN3|+5V|J34.1 Vsensor|
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!783px-HPC-flat-cable-pinning.jpg!
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h4. Power and Laser
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|_.Pin|_.Signal|_.Connect to|
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|1|Not Connected||
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|2|Laser||
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|3|5V||
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|4|Not Connected||
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|5|24V||
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|6|GND||
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h2. PSU 
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!PSU.jpg!
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The PSU has 4 connectors.
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1. K+/K- - Laser Test button
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2. G/IN/5V - Power control potentiometer
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3. D+/D- - Laser enable/safety interlock
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4. 24V/G/5V/L - Power to controller board
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h2. Hooking it up
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[[K40-III 6c6879 Connections to Laos board]]
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[[K40-III Material Settings]]
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[[K40-III Improvements]]
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h2. Other Notes
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This machine is not what you'd call up to standards. Please bear in mind that there is no:
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* Lid sensor
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* Sensor to see if water is flowing
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* Laser temperature sensor
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* Cutting area temperature sensor to monitor for fire
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* Extractor sensor to make sure fumes are being extracted.
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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.