Sunday, May 8, 2011

Configuring EMC2 for Limit and Home switches

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Y-Axis cable management

I didn't have the room for a nice cable-tray like I made for the X-axis.  A simpler approach was to use a scissors-type of assembly that just kept the cables neat, yet out-of-the-way.  I ran both the stepper cables and the router power through this arrangement.

At each joint of the scissor is a 3/8" OD nylon bushing, cut just slightly longer than the material thickness to avoid binding the joint when the nut is tightened on the screw.  Click on the image to see a larger version.  All 3 joints are made in a similar fashion, with the length of the nylon bushing and the 8-32 machine screw adjusted to fit the materials and washer thicknesses.

After the first test, I realized there was no good way to support the cables, so I made the 8-32 machine screws a bit longer and added a wire loom clamp between the nut and the last washer. I sized the clamp large enough to allow the cable to move freely.

It seems to work great.