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  1. #1
    Join Date
    May 2009
    Posts
    1347

    Wiring Chinese BOB for Mach3

    Started to read the 20 pages guide I found for this BOB but it makes no sense to me what they are talking, pretty unreliable.

    https://www.amazon.com/Stepper-Contr.../dp/B07BFTRTBC

    I attach a picture of the BOB and wonder if someone knows anything about it. For example talking about the X axis stepper connections they say to connect PUL to one side of the board as I marked and the DIR to another side of the board. And still there is one more motor connection on the X left to be connected.

    Looks like the spindle and limits should be easy to connect, I guess

    Any ideas?

    Thanks
    Attached Thumbnails Attached Thumbnails BOB Wiring.jpg  
    Nicolas

  2. #2
    Join Date
    May 2009
    Posts
    1347

    Re: Wiring Chinese BOB for Mach3

    I also purchased the BOB from this link which includes only one relay

    https://www.makerstore.com.au/produc...axis-breakout/

    however I discover that the printer cable was not included and since in my area I could not find printer cable, to buy one online was $25 + so it was less expensive to buy the other one which had 3 relays and included the printer cable

    What is confusing in the instructions, they are talking about "....the board supports the connection of common cathode and common anode. The common anode connection would be taken as an example..."

    What common cathode / anode refers to in relation to the BOB?
    Nicolas

  3. #3
    Join Date
    Jun 2024
    Posts
    1

    Re: Wiring Chinese BOB for Mach3

    The passage in the instructions that reads, "The board supports the connection of common cathode and common anode," is unclear. An example would be the common anode connection." planet clicker

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