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Before i blow my board . 3d touch help

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Duet Hardware and wiring
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  • undefined
    Richard F
    last edited by 20 Mar 2019, 17:02

    0_1553101331886_IMG_2538.JPG

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      Phaedrux Moderator
      last edited by 20 Mar 2019, 17:03

      Definitely looks like an older style probe.

      Did it include any instructions on where it suggests you use the resistor?

      Z-Bot CoreXY Build | Thingiverse Profile

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        Richard F
        last edited by 20 Mar 2019, 17:04

        came with no paperwork :{

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          Richard F
          last edited by 20 Mar 2019, 17:09

          does the 240 ohm sit on the black wire ?

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            Phaedrux Moderator
            last edited by 20 Mar 2019, 17:10

            From what I can tell from googling this is it maybe? http://www.geeetech.com/wiki/index.php/3DTouch_Auto_Leveling_Sensor#Electrical

            https://www.aliexpress.com/item/3DTouch-3D-Auto-Leveling-Sensor-With-Auto-Leveling-Feature-For-3D-Printer-Free-Shipping/32723240651.html

            It definitely says it comes with a 10k resistor, but the instructions don't mention anything about it and only over connecting to ramps.

            Z-Bot CoreXY Build | Thingiverse Profile

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              Richard F
              last edited by 20 Mar 2019, 17:10

              i think its to connect a led to the white black wire for debugging

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                Phaedrux Moderator
                last edited by 20 Mar 2019, 17:11

                From the Duet BLTouch documentation:

                https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_BLTouch

                For all Duet 2 WiFi/Ethernet boards prior to version 1.04
                If you have the older BLTouch, also connect the 240 ohm resistor between Probe GND and Probe IN. On the newer BLTouch, cut the PCB trace on the BLTouch to reduce the output to 3.3V as described in the BLTouch instructions.

                The Z probe input on the Duet 2 Maestro and Duet 2 WiFi/Ethernet rev 1.04 and later is 30V tolerant, so it doesn't matter whether you reduce the output of the BLTouch to 3.3V or leave it at 5V.

                Z-Bot CoreXY Build | Thingiverse Profile

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                  Richard F
                  last edited by Richard F 20 Mar 2019, 17:16

                  0_1553102170917_Duet_Wifi2_2048x2048.png

                  like this ?

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                    Phaedrux Moderator
                    last edited by 20 Mar 2019, 17:20

                    That looks correct.

                    Z-Bot CoreXY Build | Thingiverse Profile

                    undefined 1 Reply Last reply 20 Mar 2019, 17:21 Reply Quote 0
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                      Richard F @Phaedrux
                      last edited by 20 Mar 2019, 17:21

                      @phaedrux ok thanks for your help :}

                      undefined 1 Reply Last reply 12 Jun 2019, 00:04 Reply Quote 0
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                        Deler @Richard F
                        last edited by 12 Jun 2019, 00:04

                        Hi @richard-f did it work with 10K resistor? and did you connect it between black and white wire?

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