Duet Pinout - question about Z-endstop

Discussion in 'Getting Started' started by Rob Heinzonly, Sep 5, 2019.

  1. Rob Heinzonly

    Rob Heinzonly Well-Known Member

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    I did not buy the wiring loom of the TC kit (I think it's more fun to do it myself, and I have a different layout of my electronics panel).

    According to the Config.sys on Github I could figure out most of the TC wiring.

    [​IMG]

    I do have a question about the Z-stop. According to this line it goes on the Z-endstop connector:
    Code:
    M558 P7 X0 Y0 Z2 H3 F360 I0 T20000     ; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
    But what pins do I use ? Is that GND and IN ? Do I need a pulldown resistor for that ?
    I did check the Duet dozuki, but documentation is not clear about this (or more possible, I overlooked it ;)).
     
  2. Greg Holloway

    Greg Holloway Administrator
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    Hi,

    Firstly the bed plugs into the crew terminals next to the where the bed sensor plugs in. Do not plug it into the connector you have labelled as H0 - Bed, that is a hotend heater output.

    The z endstop connects like a standard endstop. As it requires no power conenct to gnd and signal, the two outer pins on the header.

    If you reference the duet connections diagram it shows what goes where | https://duet3d.dozuki.com/Wiki/Duet_Wiring_Diagrams
     
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  3. Rob Heinzonly

    Rob Heinzonly Well-Known Member

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    Ah ! Thanks ! So it should be like this:


    [​IMG]
     
  4. Greg Holloway

    Greg Holloway Administrator
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    half yes, half no.

    the bed is now correct but T0 should be where the bed was, and move the others up one heater.

    Look at the linked diagram.
     
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  5. Rob Heinzonly

    Rob Heinzonly Well-Known Member

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    Ok. So just for the record: [​IMG]
     
  6. Spoon Unit

    Spoon Unit Well-Known Member

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    This looks close. The channels for the PT100 are wrong. 200,201,202,and 203 are on the main board (you can actually stack the daughterboards. I didn't realise this until what I tried failed. I put a daughterboard on each board the same as you have it, but had just assumed that the channels would be 200,201 on the main and 202, 203 on the Duex. In fact, you can wire up to 8 PT100s; 4 on two stacked daughterboards on the mainboard (200,201,202,203) and 4 on two stacked daughterboards on the Duex (204,205,206,207). As you have it, the daughterboard channels should be marked 204,205, and you'll then be running with the same setup as me.

    Code:
                        ; Tool 0
    M305 S"T0" P1 X200                                        ; PT100 Tool 0 (right - mainboard) , RTD1, channel 200
    M143 H1 S300                             ; Set temperature limit for heater 1 to 300C
    
                            ; Tool 1
    M305 S"T1" P2 X201                                        ; PT100 Tool 1 (left - mainboard), RTD2, channel 201
    M143 H2 S300                             ; Set temperature limit for heater 2 to 300C
    
                            ; Tool 2
    M305 S"T2" P3 X204                                        ; PT100 Tool 2 (right - duex), RTD3, channel 204
    M143 H3 S300                             ; Set temperature limit for heater 3 to 300C
    
                            ; Tool 3
    M305 S"T3" P4 X205                                        ; PT100 Tool 3 (left - duex), RTD4, channel 205
    M143 H4 S300                             ; Set temperature limit for heater 4 to 300C
     
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  7. Rob Heinzonly

    Rob Heinzonly Well-Known Member

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    @Spoon Unit : You are right. I overlooked that one. Thanks.
     

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