DIY 3D Printed CNC. MultiBot CNC v2 build video part 5

This is the fifth video in a series that will show how I build a DIY 3D printed CNC. The project is downloadable on Thingiverse here: https://www.thingiverse.com/thing:4645791

More limit switches and wiring... I show the first revision of my custom wire management for the Multibot CNC.
The Arduino is finally here and I spend the better parts of two weeks troubleshooting simple problems.
Tired of waiting, I just order the Arduino with older drivers from Amazon so I can continue the build.

There are several parts that may leave you with questions; please leave them in the comments and I'll answer.

In a later video I plan to talk about things like why a CNC instead of a laser, and why this project instead of others, and other topics one needs to consider before and while building a CNC. Please stay tuned!

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Some of the extra items I bought while troubleshooting EMI issues I had. You may want to consider starting off with just the Optocoupler Isolation Board. Can use old ethernet cabling for limit switch extenders. the spiraled wires are good for EMI.

4-Channel Optocoupler Isolation Board:
https://smile.amazon.com/gp/product/B07GMHLL2M/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Voltage Step Down Buck Converter Board: (to get 12V fan power from 24V power supply)
https://www.amazon.com/gp/product/B0758ZTS61/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

Shielded limit switch cabling: (I needed 3, got 2)
https://smile.amazon.com/gp/product/B01LNH8POQ/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

Shielded stepper motor cabling: (hard to get into small JST connectors)
https://smile.amazon.com/gp/product/B07T951L58/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

Ratchet tool and limit switch connectors:
https://smile.amazon.com/gp/product/B082234HSS/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

Stepper motor connector kit:
https://smile.amazon.com/JST-PHR-Connector-Female-Housing-Adapter/dp/B07L3GL995/ref=sr_1_1_sspa?dchild=1&keywords=2.0mm+JST-PH+Connector+Kit&qid=1615059780&s=electronics&sr=1-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFYQTVFR1NDMUlFSEEmZW5jcnlwdGVkSWQ9QTA3OTUzMTMySFhTTVVXM0MwSDcwJmVuY3J5cHRlZEFkSWQ9QTA1MzMyNDQ2REJBRk80M0ZIVkMmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

Видео DIY 3D Printed CNC. MultiBot CNC v2 build video part 5 канала Random Projects with Sam