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    Duet 0.8.5 and BLtouch 3.1

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    • Dave1167
      Dave1167 last edited by

      Hi all
      I am using a duet 0.8.5 and I have also got a BLtouch v3.1. From the documentation on the 3.1 it says that it will now automatically choose either 3.3v or 5v logic. (The translation is a bit unclear but I think that's what it means) Am I correct in thinking I can go ahead and connect the probe to the 0.8.5 Z probe socket without any additional resistors or diodes etc.

      If this assumption is wrong. I notice the 0.8.5 has a 5v pin and grnd next to the power in, could I use that to power the BLtouch?

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      • dc42
        dc42 administrators @Dave1167 last edited by

        @Dave1167 said in Duet 0.8.5 and BLtouch 3.1:

        Am I correct in thinking I can go ahead and connect the probe to the 0.8.5 Z probe socket without any additional resistors or diodes etc.

        It should be safe to connect the BLTouch black and white wires directly to the ground and IN pins on the Z probe connector. You will need to supply +5V power to the BLTouch, and you will need to connect the BLTouch control input to a PWM-capable output on the expansion connector.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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