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CNC Table:

Mechanical

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Universal Tool Mount on y axis

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Stepper Gear Plate Mount Bolt

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CNC Table:

Mechanical

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  • Stepper driver gear reduction - output shaft, ⅜” - $4 for 3’. Need 2” for each stepper.

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Implementation Route

Oxyacetylene is first Implementation.

See Height Controller.

Run it.

Add z height control. Run it.

RF Shielding for Plasma Cutter

Ultrasound Sensor. Discussion on Adafruit.

Precision of Plasma vs. Oxyacetylene: http://www.millerwelds.com/resources/articles/plasma-cutter-oxyfuel/

http://www.ampflame.com/oxy-fuel-flame-cutting-services.html

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Capacitive Sensor

Circuit by Paul Neelands

Seeedstudio.com for fab

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Subject Matter Experts and Resources

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Electronic Interference from Plasma Cutter

http://www.cnccookbook.com/CCCNCNoise.html

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prospective shopping list may 8 order

http://opensourceecology.org/w/index.php?title=CNC_Torch-Router_Table_2_-_Controller_module_-_Bill_of_Materials

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Controller - Lasersaur Controller

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Lasersaur Controller Driver Board

AC in

x steppers (both from one drive)

y axis

lasersaur controller - DriveBoard

interlock defeat 1

interlock defeat 2

4 limit switches one at the end of each axis.

ac

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dc

ac

dc

stepper driver

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verify pinout of Gecko substitute. Gecko is used in Lasersaur at $100 more cost each ($300 more)

System runs at 24

Stepper X

Stepper

Y

Stepper X

End Stop X

End Stop Y

End Stop X

End Stop Z

Power Supply

24V

Current Requirement: 2.5A x3

Get 24V Power Supply

Gecko on Ebay

Gecko Substitute on Ebay - 5A. Manual.

Gecko is 7 Amps

door switch safety defeat widgeets

Wireless Device Connection

Wired Device Connection

Power Supply

5V

Stepper Motor Driver

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Z Height Controller

  • Ultrasound sensor - current route
    • Good for Plasma and Oxyacetylene Cutting
    • PWM Example
    • specs page 3 show accuracy increases after 50 cm
  • Independent module
    • Triggered to on state by Lasersaur Controller
    • Interoperability: usable with any other CNC controller system

Lasersaur Controller

on/off to z-height controller

Wireless Device (controls CNC table)

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Safety Logic

  • Lasersaur has emergency stop (e-stop) button (cut path is not forgotten)
  • For oxyacetylene, first safety measure is shutting of gas valves

E-Stop

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Velocar Team - Yann + Julien Blaise