Avid CNC: Making a Safer M12 Breakout Board

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Today we're working on a new version of the M12 CNC controller breakout board for my Avid CNC router with Centroid Acorn and Clearpath Servos. This version of the board has the combining logic so I can use normally-closed inductive proximity sensors with the machine and retain the auto-squaring logic of the Acorn system. I'll show the schematics and the PCB design. We'll do some testing, find some problems, make it worse, and eventually fix it.

Tools used in this video:

Micronta Range Doubler Multimeter (eBay*): https://ebay.us/IcMrPC
Hakko FX-951 Soldering Station (Amazon*): https://amzn.to/2XB9CD0
Hakko 611-2 Dual Solder Reel Stand (Amazon*): https://amzn.to/2H0Yhaf
Banana to Alligator Test Leads (Amazon*): https://amzn.to/304uki5
Starrett Precision Screwdriver Set (Amazon*): https://amzn.to/35taFJc
Rigol DP832 Triple-Output Power Supply (Amazon*): https://amzn.to/2FHtSfz

*These are affiliate links. When you click one of these links and make a purchase, it helps to support projects like this one.

Raw Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License

02:08 Normally-Open vs Normally-Closed
07:09 The Circuit Design
12:55 PCB Assembly
17:01 Testing
19:39 Fixing the Glitch
21:10 SMT Sample Books
21:43 The Modified Board
22:16 Re-Testing
23:07 A Better Solution
25:07 More Board Surgery
26:13 Re-Re-Testing
27:24 Conclusions

inductive proximity sensors avid pro cnc avid cnc setup cnc projects
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