Laser Cutter

This is the documentation of the operation and safety of the CO2 Infrared laser cutter. For hardware and build notes, see Laser Cutter Build.

Theory / General Info

Laser

• Good notes on controlling the intensity of the laser with PWM - Laser Power Settings Via PWM Can Fool You

Electronics

• Potential arduino shield to use with LasaurGrbl - LasaurShield

Software

• Current Setup
  • LinuxCNC - LinuxCNC
  • LinuxCNC Config Setup - Stepper Config
  • LinuxCNC INI Config - INI Config
  • Currently Used Config

• Previously Considered
  • Potential controller software based on Grbl- LasaurGrbl
  • Software to run on Mac/PC to send G-code to LasaurGrbl - LasaurApp

General

• Vancouver Laser Manual
• ATX Hackerspace Laser Manual

Build Notes

• Laser Cutter Build and hardware information
• The laser cutter being built is based around the laser cutter on Buildlog.net
• Buildlog.net 2x Laser Google Doc Assembly Instructions
• Buildlog.net 2x Laser Control Board Doc
• Another good reference for another machine is Lasersaur

To Do List

• Buy/build shaft couplers for y-axis --Andronicus 22:46, 24 October 2012 (EDT)
• Buy honeycomb surface
• Buy large z-axis gear and timing belt --Andronicus 18:31, 20 October 2012 (EDT)
• Buy cable carriers
• Buy Pololu motor drivers --Andronicus 00:50, 20 October 2012 (EDT)
• Buy Get Pololu heat sinks from Brian --Andronicus 15:53, 10 November 2012 (EST)
• Specify limit switches
• Buy limit switches
• Cut 1/4" aluminum rod stock to 12" & 14" sections for y-axis shafts --Andronicus 18:31, 20 October 2012 (EDT)
• Machine air assist nozzle
• Assemble x & y-axis pulleys
• Figure out permanent z-axis electronics
• Buy outlets and terminal blocks
• Buy a flow indicator
• Post laser power supply information
• Laser test setup
• Cabinet/Table
  • Paint
  • Build doors
  • Mount fire extinguisher
  • Mount push bar
• Determine electronics setup
  • Parallel Port Option: Interface board from buildlog.net--Andronicus 22:46, 24 October 2012 (EDT)
  • Procure electronics components for interface board
  • Parallel port cabling
  • Bring in computer
  • Bring in old RAM
  • USB Option: Lasersaur Arduino Shield -- ON HOLD

Buildlog.net Interface Board - (DONE)

Designator	Qty	Description	Part Number	Supplier	Supplier P/N	Provided By
C1,C2,C12-C16	7	0.1uF 50V 20% Ceramic Cap	Kemet C410C104M5U5TA7200	Mouser	80-C410C104M5U-TR	Issac
C3-C5	3	220uF 25V Electrolytic Cap	Panasonic ECE-A1AKA221	Mouser	667-ECE-A1AKA221	Issac
C6-C11	6	100pF 100V 5% Ceramic Cap	AVX SA102A101JAR	Mouser	581-SA102A101JAR	Issac
CR1-CR3	3	Diode, 1N4148	Generic	Mouser	583-1N4148-B	Issac
J1	1	Connector, D 25 Pin Male 90 Deg	FCI 10090097-P254VLF	Mouser	649-10090097-P254VLF	Issac
J2	1	Connector, D 9 Female	FCI 10090099-S094VLF	Mouser	649-10090099-S094VLF
J3	1	Connector, D 9 Male	FCI 10090097-P094VLF	Mouser	649-10090097-P094VLF	Issac
J4	1	Connector, RJ45 Shielded	Stewart SS-6488S-A-NF	Digikey	380-1024-ND
J5	1	Connector, DC Power				Issac
JP1,JP2,JP3	3	Connector, Male Header 3pos	Generic			Issac
K1	1	Relay	Panasonic TQ2H-5V	Mouser	769-TQ2H-5V
Q1	1	Transistor	Motorola MPS2222A	Mouser	863-MPS2222ARLRAG	Issac
Q2,C3	2	MOSFET	Vishay IRL520	Mouser	844-IRL520PBF
R1-R4,R10,R12,R14,R17,R18,R21,R22,R24,R26	13	Resistor, 10K, 1/4W	Generic	Mouser	660-MF1/4DCT52R1002F	Issac
R5,R6,R7,R8	4	Resistor, 100R, 1/4W	Generic	Mouser	660-MF1/4DCT52R1000F	Issac
R9,R11,R13	3	Resistor, 1K, 1/4W	Generic	Mouser	660-MF1/4DCT52R1001F	Issac
R15,R16,R19,R20,R23,R25	6	Resistor 10 Ohm, 1/4W, Metal Film	Generic	Mouser	660-MF1/4D52R10R0F	Issac
RP1	1	Resistor Array 10K x 9	Generic	Mouser	858-L101S103LF
S1,S2,S3	3	Hex Rotary Switch	Copal S1011	Digikey	563-1044-ND
TB1,TB2,TB3	3	Terminal block 5mm Header	TE	Mouser	571-796644-4
TB1,TB2,TB3	3	Terminal block 5mm x 4, Pluggable
TB4	1	Terminal block 5mm x 4
TB4	1	Terminal block,5mm x 3, Pluggable
TB8	1	Terminal block 5mm x 3
U1	1	Power Supply 5V DC/DC	Murata OKI-78SR-5/1.5-W36-C	Mouser	580-OKI78SR5/1.5W36C
U2	1	Power Supply 3.3V DC/DC	Microchip MCP1700-3302E/TO	Mouser	579-MCP1700-3302E/TO
U3,U4,U5	3	Stepper Driver	Pololu A4983 or A4988
U6	1	Schmitt Trigger Non-Inverting	NXP 74HC7014	Mouser	771-74HC7014N
B1	1	50mm Blower, 5V	Sunon KDE0505PFV1.11.MS.A.GN	Digikey	259-1576-ND
Terminal Block Plug	3	4C For stepper motors
Terminal Block Plug	1	3C For water connection
Power Connector	1	For 24VDC power input CUI
Jumper	3	0.1” Jumper Cap	Generic			Issac
Standoffs	4	For blower	McMaster			Andy
Screws	4	PHMS #4-40 x 2.5				Andy
Nuts	4	#4-40 Nylon Locking	Generic			Andy