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Anybody have the grizzly dro for calipers?

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  • Anybody have the grizzly dro for calipers?

    http://www.grizzly.com/products/24-R...raction/T23013

    I just want to make sure it works before I drop the cash on it. I am sick of not having anything.

  • #2
    I put those on the X and Y of my mongrel vertical mill last fall and have no complaints thus far. I probably wouldn't trust them plus or minus .001" or a bit more but for what I do, that's close enough. It sure is a lot nicer having those than nothing.
    Video meliora proboque deteriora sequor

    www.garagegunsmithing.com

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    • #3
      I just bought some 6" models and a couple of longer ones from a different source on Amazon, I haven't had time to play with them yet but here are a couple of threads,

      http://www.homemodelenginemachinist....63.0;topicseen

      http://www.homemodelenginemachinist....p?topic=7767.0

      Hope this helps.

      http://www.amazon.com/iGaging-DigiMA...995945&sr=1-27

      http://www.amazon.com/iGaging-DigiFE...ref=pd_cp_hi_2
      Last edited by dewat; 08-22-2010, 01:37 AM.

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      • #4
        Thanks Cobbler...at this time, a majority of what I do are weldaments...so even 5 thou would be good enough for me.

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        • #5
          Well, just ordered one. We'll see how well it works...once it arrives.

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          • #6
            Pop back in and give a product review - you have me ready to write a check

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            • #7
              The Grizzly scales are apparently the same as the iGaging DigiMag Remote Readout - http://www.igaging.com/page9.html#miniHeight

              There's a useful discussion about them at: http://www.cnczone.com/forums/showth...?postid=812851

              One thing to note that may impact your use of these scales is that apparently they automatically turn off after about 3 minutes of use, and so far reportedly nobody has figured out a way to either disable the auto-off or jury-rig a workaround.

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              • #8
                Is that just the remote display or the scale too?The ads aren't to clear on that point.
                I just need one more tool,just one!

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                • #9
                  Based on what it says and shows on the igaging.com site, the unit includes both the scale and the remote display.

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                  • #10
                    Originally posted by doorknob
                    One thing to note that may impact your use of these scales is that apparently they automatically turn off after about 3 minutes of use, and so far reportedly nobody has figured out a way to either disable the auto-off or jury-rig a workaround.
                    The auto-off feature is very annoying and I would like to find a way to disable/modify this feature but, thus far, it has not caused any problems. When you turn it back on after a time-out, it has always come back on at the same point where it shut off. If it turned back on to zero or something, I'd probably rip them off the machine.
                    Video meliora proboque deteriora sequor

                    www.garagegunsmithing.com

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                    • #11
                      I am having visions of a servomotor-controlled robotic arm/hand assembly that will push the 'On' button every three minutes...

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                      • #12
                        Originally posted by doorknob
                        I am having visions of a servomotor-controlled robotic arm/hand assembly that will push the 'On' button every three minutes...
                        http://www.youtube.com/watch?v=Z86V_ICUCD4

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                        • #13
                          Originally posted by WaveDude

                          I want one.

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                          • #14
                            Originally posted by doorknob

                            One thing to note that may impact your use of these scales is that apparently they automatically turn off after about 3 minutes of use, and so far reportedly nobody has figured out a way to either disable the auto-off or jury-rig a workaround.
                            The popular chinese scales and calipers are never off, only the display on the scale/caliper turns off. Since they are incremental devices, they have to constantly take measurements to detect motion or they would lose their position and you would have to reset them. And they continue to output data over the 4 pin connector when "off".

                            The display won't turn off if you push buttons or move the scale.

                            It turns out there is a way to simulate pushing buttons over the 4 pin connector. You can simulate pressing the zero and mode buttons (most calipers don't have the physical mode button) by connecting resistors between the positive battery lead and the clock/data. This is primarily used to switch the caliper between fast and slow reading mode.
                            http://www.yadro.de/digital-scale/protocol.html
                            By rigging up a small low power microcontroller to play with the buttons periodically, for example switch to fast mode and back to slow mode or switch to hold mode and back, you could probably reset the display auto-off timer.

                            But with a remote DRO readout, you don't need to.

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                            • #15
                              Originally posted by whitis
                              The popular chinese scales and calipers are never off, only the display on the scale/caliper turns off. Since they are incremental devices, they have to constantly take measurements to detect motion or they would lose their position and you would have to reset them. And they continue to output data over the 4 pin connector when "off".

                              The display won't turn off if you push buttons or move the scale.

                              It turns out there is a way to simulate pushing buttons over the 4 pin connector. You can simulate pressing the zero and mode buttons (most calipers don't have the physical mode button) by connecting resistors between the positive battery lead and the clock/data. This is primarily used to switch the caliper between fast and slow reading mode.
                              http://www.yadro.de/digital-scale/protocol.html
                              By rigging up a small low power microcontroller to play with the buttons periodically, for example switch to fast mode and back to slow mode or switch to hold mode and back, you could probably reset the display auto-off timer.

                              But with a remote DRO readout, you don't need to.

                              Based on what I have seen elsewhere, a degree of caution is in order here.

                              There's a 6-page thread on a different forum about the Grizzly/iGaging scales with the remote display starting at http://www.homemodelenginemachinist....p?topic=9163.0


                              There's a discussion on page 3 of that thread where one poster claims that the data communication protocol between the scale and the remote display is not the same as the one commonly-seen on other Chinese import scales (and documented at YADRO and at Shumatech). So, while what you have described above applies to the common Chinese imports, it may not apply to this one.

                              For example, an excerpt from that thread (if that's OK to do here):

                              one guy says: I wonder if this display can be wired into the cheap chinese scales I already have? From the looks of it there is power, ground, data, and clock signal(ssy).

                              another guy replies: There was another thread about these scales some time back and the same question came up. So I opened up both types of scales and had a look at the signals on my O-scope and found that they are not the same format at all.


                              There's some other useful info over there, including pictures of various mounting methods on X2 mills and discussions about extending the length of the scales.

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