Renovate CNC machine

Repair and renovate used CNC machine

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This project documents the process of repairing a used CNC machine.

I bought a New Hermes Vanguard 3000 CNC engraver a long time ago without any controller. It is a professional machine that is mechanically sound and has all the components except for the electronics. The plan is to restore this machine to make it fully functional  using a cheap Chinese offline controller from Bangood and a Gecko G540 4 axis digital step drive.

If everything goes as planned, we might eventually add a laser head to the machine and possibly  this 4th rotating axis as well.


Gecko initial setup

Adobe Portable Document Format - 211.51 kB - 07/20/2018 at 20:11


G540 MANUAL REV8.pdf

Gecko driver manual

Adobe Portable Document Format - 800.40 kB - 07/20/2018 at 20:11



Stepper motor manual

Adobe Portable Document Format - 542.79 kB - 06/08/2018 at 22:34



New Hermes Vanguard 3000

JPEG Image - 11.42 kB - 06/05/2018 at 16:50



Chinese manual

Adobe Portable Document Format - 5.48 MB - 06/05/2018 at 12:17


View all 14 files

  • Experiment Stepper Motor

    Ricky Zhang06/04/2018 at 01:34 0 comments


    I have zero experiences in stepper motor before. So I need to figure out how stepper motor works.  The following is a log on my learning process of stepper motor.

    Learning Process:

    There are 3 types of stepper: unipolar, bipolar and hybrid stepper motor. We need to figure out what type of stepper motor and also its wiring.

    I got an unknown source of stepper motor with model TEC CLA45-14601 on the label. There are six wires on it. Based on the number of wires and according to the Internet, this can be a unipolar or a hybrid.

    Because I can't google its data sheet. I have to use digital meter to check the resistance of each pin combination. This youtube video is very helpful to grasp the idea how to identify coil and tap.

    RedRed-Yellow: not connected
    Red-Brown: 20 Ohm
    Red-Blue: not connected
    Red-White: 11 Ohm
    Red-Black: not connected
    RED, Brown, White is in the same coil
    Yellow, Blue, Black is in the same coil
    YellowYellow-Brown: not connected
    Yellow-Blue: 20 Ohm
    Yellow-White: not connected
    Yellow-Black: 11 Ohm
    Black is tap
    BrownBrown-Blue: not connected
    Brown-White: 11 ohm
    Brown-Black: not connected
    White is tap
    BlueBlue-White: not connected
    Blue-Black: 11 ohm
    WhiteWhite-Black: not connected

    Rule of thumb

    • If not connected, they are not in the same winding
    • For the same winding, the resistance between coil end and tap is the half of the resistance between two coil.

    Based on such rule we can deduce which two are tap and which are belong to the same winding. See the notes above.

    To be continue...

View project log

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