Shielding CNC Electronic Wires - How to Eliminate EMI (Interference)!

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In this comprehensive guide, we explore the importance of shielding in CNC electronics and demonstrate various scenarios to show its effects. Here are the topics I cover:

Components of a CNC machine: controller, stepper motor driver, stepper motor, and power supplies
Testing with bare wires vs. shielded cables
Effects of parallel vs. intersecting wire placement
Interference patterns on signal wires and limit switch inputs
Oscilloscope readings and their interpretations
Best practices for cable management in CNC setups

Equipment used:

Oscilloscopes (Personally Recommend):
Budget (Handheld 50Mhz): https://amzn.to/46Pi6f0

Medium Budget but top-rated
Siglent Technologies Oscilloscope: https://amzn.to/4dqQxeJ

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Wire Ferrule Kit with Tool: https://amzn.to/4dshNJR

My favorite Multimeter: https://amzn.to/4dOmqNW
You will have this multimeter for the rest of your life, and you can pass it down to your kids!!

All of the CNC electronics in this video can be found at BuildYourCNC

Timestamps:
0:00 Intro
0:30 Components and Tools
3:47 1st Test - No Shielding with Short Wires Just Laying About
7:07 2nd Test - Short Signal Wires and Motor Wires
11:36 3rd Test - No Shielding Long Signal and Motor Wires
16:08 4th Test - No Shielding Long Signal and Motor Wires Intersecting
17:59 5th Test - No Shielding Long Limit Switch Signal Wire and Motor Wires
19:09 Self Sponsorship - My Resource Offering to You
21:08 5th Test Continued
25:22 6th Test - Limit Switch Signal Shielded and Motor Wires Not Shielded
26:44 7th Test - Limit Switch Signal Not Shielded and Motor Wires Shielded
28:07 8th and Final Test - Both Limit Switch Signal and Motor Wires are Shielded
29:17 Conclusion and Final Thoughts

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