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  1. #16
    Join Date
    Sep 2006
    Location
    Australind , WA
    Age
    53
    Posts
    761

    Default

    Z axis is all done.
    I added a second magnet to see if that increased the magnetic flux enough to give me earlier activation and it worked well.
    When the new , thicker magnets arrive I'll swap them out.
    I thought the 3mm thick ones would be heaps, but apparently not...lol The new ones are 6 mm thick. Other dimensions the same (20 x 10mm.)
    x axis 2.JPG

    I started on the X axis today as well. Worked out how the mount the switches and fabricated 2 mounts. At least the wiring will be run alot easier for the last 2.

    x axis.JPG

    Steve

  2. #17
    Join Date
    Sep 2012
    Location
    North Yorkshire UK
    Posts
    1,939

    Thumbs up A112 Hall switch.

    Hi Steve,

    The devices that I have are marked A112 and E964 both are in TO92 packages. The only data that I could find was these

    A112x-Datasheet.pdf
    Infineon-TLV4964-5TAB_Hall_Switch-DS-v01_00-DS-v01_00-EN.pdf

    I did find another applications note from Infineon which I can attach if you want it.

    HTH.
    Best Regards:
    BaronJ.

  3. #18
    Join Date
    Sep 2006
    Location
    Australind , WA
    Age
    53
    Posts
    761

    Default

    Hi Baron,
    Thanks for that. I think these will be ok. Ive come too far to change now anyway...lol.
    I'm getting about 3 mm clearance so that will work out well.
    I didn't realise there were so many Hall Effect IC's around.
    Steve

  4. #19
    Join Date
    Sep 2012
    Location
    North Yorkshire UK
    Posts
    1,939

    Thumbs up Data Sheets.

    Hi Steve,

    I've been having a look at some info for Mach 4. I found it interesting and based on some things in there I went and found a couple of data sheets that you might find of interest.

    It appears that Mach requires a digital signal, that is, a rapid transition from a 0 to a 1 and vice versa. The Hall devices that you are using are a linear output, which means that the change in output level will be quite slow. In fact only as fast as the mechanism can move the magnet over the Hall sensor.

    Whilst you said that it seems to work just fine, there is the danger that the input to the Mach ends up in an indeterminate state which could cause other issues.

    Unfortunately the Hall devices that I have of this type are tiny surface mount Sot23 size and will not fit into your holders otherwise I would send you some.

    Anyway I've attached the two data sheets for the ones refered to in the Mach 4 handbook.

    OH44E_Hall_Switch.pdf
    Hall A3144.pdf

    PS. Sorry for the delay in responding, things keep getting in the way.
    Best Regards:
    BaronJ.

  5. #20
    Join Date
    Sep 2006
    Location
    Australind , WA
    Age
    53
    Posts
    761

    Default

    Last axis all done. Just have to tidy up the wiring...woo hoo.
    The thicker magnets have't arrived yet, but that will on'y be a 5 minute job to swap them out, when they do.

    It was a long job, but will stop me damaging anything if make a mistake.

    Steve


    20160930_131755 (Small).jpg

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