JIMOU Sensor Wiring/Configuration



  • I'm working on a scratch built 3D printer and just realized I can (hopefully) use a spare Prusa i3 MK3 Z-probe as the Z-Probe on this DuetWifi powered project. I ordered two replacement probes from Prusa after the Z-probe on my new MK3 failed a few weeks ago and the replacement probes they sent me have a tag on the wire that says:

    JIMOU Sensor
    P/N: IB2T-B0802N-C4B.7/35/PUR
    Sn: 2mm NPN N.C.
    5VDC 50mA Max.

    A link to a photo of the probe/connector/tag:
    https://drive.google.com/file/d/0Bw-c8Xd7dzHoYmdtZVhRVTdYYlVJa0lwTS0xYlhpVW82bUtN/view?usp=sharing

    I perused the forum and found some useful information on using inductance Z-Probes with the DuetWifi but I didn't seem to find any information on 4-wire probes and in general I'm a mechanical engineer that's out of my element on the electronics side of things. I want to make sure I get this right so I'm hoping you guys can help/steer me!

    My first question is - it looks like the PINDA probe used on the MK2/S is a 3-wire probe but the MK3 probe is a 4 wire probe. The website says something about the MK3 having an updated probe that does some sort of temperature compensation so I'm assuming that's what the 4th wire is for?

    Second question - it appears that this sensor runs on 5V which seems somewhat non-standard. This leads me to the third question…

    Third question - how the heck do I wire this thing up and get it configured properly? This sensor seems to work great on my MK3 so I'll be pretty excited if I can use it on this custom printer!

    Thanks!


  • administrators

    Leave the white wire unconnected, it's connected to a thermistor so that the variation in trigger distance with temperature can be compensated.



  • @doubleoerik:

    I'm working on a scratch built 3D printer and just realized I can (hopefully) use a spare Prusa i3 MK3 Z-probe as the Z-Probe on this DuetWifi powered project. I ordered two replacement probes from Prusa after the Z-probe on my new MK3 failed a few weeks ago and the replacement probes they sent me have a tag on the wire that says:

    JIMOU Sensor
    P/N: IB2T-B0802N-C4B.7/35/PUR
    Sn: 2mm NPN N.C.
    5VDC 50mA Max.

    A link to a photo of the probe/connector/tag:
    https://drive.google.com/file/d/0Bw-c8Xd7dzHoYmdtZVhRVTdYYlVJa0lwTS0xYlhpVW82bUtN/view?usp=sharing

    I perused the forum and found some useful information on using inductance Z-Probes with the DuetWifi but I didn't seem to find any information on 4-wire probes and in general I'm a mechanical engineer that's out of my element on the electronics side of things. I want to make sure I get this right so I'm hoping you guys can help/steer me!

    My first question is - it looks like the PINDA probe used on the MK2/S is a 3-wire probe but the MK3 probe is a 4 wire probe. The website says something about the MK3 having an updated probe that does some sort of temperature compensation so I'm assuming that's what the 4th wire is for?

    Second question - it appears that this sensor runs on 5V which seems somewhat non-standard. This leads me to the third question…

    Third question - how the heck do I wire this thing up and get it configured properly? This sensor seems to work great on my MK3 so I'll be pretty excited if I can use it on this custom printer!

    Thanks!

    Good morning, I would like to ask you if you were able to make it work in the duet without the need to solder or put diode. Many thanks for everything



  • @dc42

    Would it be possible to use the thermistor wire of the sensor, connected to a spare thermistor port, to adjust the trigger offset for temperature variations? I guess this would actually be a new feature request.


  • administrators

    @droneon said in JIMOU Sensor Wiring/Configuration:

    @dc42

    Would it be possible to use the thermistor wire of the sensor, connected to a spare thermistor port, to adjust the trigger offset for temperature variations? I guess this would actually be a new feature request.

    Yes it would be a new firmware feature. Currently the trigger height can be made to vary with bed thermistor temperature, but not with any other temperature reading.


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