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  • Garrett PinPointer

    Hello, does anybody have schematics for this pinpointer?

  • #2
    http://www.md4u.ru/forum/viewtopic.p...=5938&start=25

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    • #3
      Thanks
      Been waiting for that circuit since the year dot
      your a gent

      Regards

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      • #4
        I see there ProPointer schematic is same as THD, but ProPointer is working frequency F=12kHz while THD F=95kHz .

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        • #5
          That's not the Garrett propointer, for definite. The pro-pointer is microcontroller-based, no preset pots, self calibrating at switch-on.
          Mr.Vratis, why do you want the circuit, do you have a faulty one? Many faults are caused by the on/off switch wearing out, water damage,( or the solid-core coil wires breaking during dismantling/re-assembly).

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          • #6
            Is that a China copy or another model? Like Skippy said the Garrett uses a
            microcontroller.

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            • #7
              photo
              Attached Files

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              • #8
                back
                Attached Files

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                • #9
                  seems pulse induction circuit like my prototype

                  http://www.youtube.com/watch?v=SKnRRMh-dGE

                  www.youtube.com/watch?v=CwNmoFbAL6k

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                  • #10
                    Originally posted by Altra View Post
                    Is that a China copy or another model? Like Skippy said the Garrett uses a
                    microcontroller.
                    This is Garrett THD. The scheme is somewhat simpler than GarretPro, bat generator the same.http://www.md4u.ru/forum/viewtopic.php?f=19&t=5938

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                    • #11
                      Good point Skippy
                      How good is the THD compared to the pro.... anyone?

                      regards

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                      • #12
                        Replacement switch

                        Originally posted by Skippy View Post
                        That's not the Garrett propointer, for definite. The pro-pointer is microcontroller-based, no preset pots, self calibrating at switch-on.
                        Mr.Vratis, why do you want the circuit, do you have a faulty one? Many faults are caused by the on/off switch wearing out, water damage,( or the solid-core coil wires breaking during dismantling/re-assembly).

                        Has anyone managed to source a replacement switch for the Propointer? Garrett here in AU want to replace hte whole PCB Assy.

                        Comment


                        • #13
                          I've not seen one myself in a distributors catalogue, though I have not looked at Mouser or DigiKey. I have seen similar ones used in older PC's for the reset/Turbo front panel switches, it may be possible to install something like that.
                          Your switch may be repairable, depending on the fault. It is a double-pole switch, but only one pole is used, so only one switch contact is needed, handy if you've lost one. The spring could be replaced with something salvaged from VCR/cassette deck/floppydisk drive etc. The latch wire you could live without, just use as a push and hold. Your other alternative is to fit a standard push-and-hold switch, such as used on the front of VCR's.

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                          • #14
                            Is this the one?http://www.ebay.com/itm/6-Miniature-...item564a410d57

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                            • #15
                              Originally posted by bicter View Post
                              Has anyone managed to source a replacement switch for the Propointer? Garrett here in AU want to replace hte whole PCB Assy.
                              I've done a couple of switch replacements and used these ;

                              http://www.taydaelectronics.com/elec...vdc-6x6mm.html

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