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5 DOF Robot - Z limit Issue

Discussion in 'Other Projects' started by Arvid Hjort, Feb 9, 2022.

  1. Arvid Hjort

    Builder

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    Hi!

    I'm using OpenBuilds V1.0.312 combined with a CNC Shield V3 from AZDelivery and an arduino. I'm having issues with my Z limit switch. XY limit switches are working fine and the issue isn't the switch since I tested it on the XY ports and then it works. It most likely not the CNC Shield either since I have had the same issue with 2 unique CNC Shields. I'm guessing its software? Do I have to toggle on the Z limit switch in software or something? I've tested z- and z+ ports. I can literally put jumpers over z+ and z- and nothing!

    Am I dumb?

    Se pics.

    272869389_641099107167157_2977400676390095447_n.jpg 272887718_1900754840312828_2976098071660222570_n.jpg
    272859680_1059747098213385_3669497260340626496_n.jpg 272841634_697864434554093_6118192352715313039_n.jpg 272947480_436442044897152_1789149621130703873_n.jpg
     
  2. Alex Chambers

    Alex Chambers Master
    Moderator Builder

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    Which Arduino pin are you using for the Z limit switch? With grbl 1.1 it should be pin 12 on the Arduino.
    Alex.
     
  3. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    Fake/Knockoff chinese supply CNC shields are for Grbl 0.9 that used different pinouts. If bought from the original supplier it would have been the updated versions. See Genuine Protoneer CNC Shield v3.51 for Arduino Engraver CNC GRBL 1.1 and rather support the people designing the product in the first place.

    They will keep selling clones as long as people keep buying them - with no regard for the fact that Grbl 1.1 has been out for 6 years - and those were cloned from Protoneers Grbl 0.9 boards
     
  4. Arvid Hjort

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    I though they were offical borads, bought them from a supplier in germany. I will buy real ones!!
     
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Judging by the symptoms they don't seem to be. Not sure of official suppliers in Germany, but if you are unsure, check in with Protoneer :)

    Did a quick check into AZ Delivery's site and see Arduinos with CH340 usb chips too they are just aliexpress resellers it seems.
     
  6. Arvid Hjort

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    Thank for the help! I will order real boards now. Soldering shouldnt be a problem, I have some experince.
     

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