ToolBoard 1LC - wiring a NPN NC inductive sensor

Jiarko

hi all, I'm trying to figure out the "cleanest" way to wire a NPN NC inductive sensor directly to the 1LC toolboard. likely my question is silly, but probably someone can quickly answer: I would use the "IO_0" connector, connecting "GND" and "io0.in" to the sensor "GND and "SIGNAL", my doubt is the right way to get the "V+". is it fine to derive it directly from the "POWER IN" connector?

thanks
ciao
Andrea

dc42

@Jiarko yes you can get power for the sensor from the VIN connector, or alternatively from any of the three OUT connectors.

Jiarko

@dc42 I've wired the probe and set the following

M558 P8 C"!121.io0.in" H5 F120 T6000

into the "config.g" file . I'm trying to figure out if everything works fine but I can't find a way to check if the sensor is correctly set.

I see the power of the sensor is ok; when I put some metal obj close to the sensor led switches off, but I cannot detect via DWC if the system is working fine (i.e. the zProbe input is triggering the signal).

If I go into DWC "machine specific - endstops" (the plugin I've loaded) the "Z axis" never change its status.

If I go in the "object Model" and search for "sensor - endstops" I see

highEnd = false
triggered = false
type = "zProbeAsEndStop"

If I send M119 command I see " Endstops - X: not stopped, Y: not stopped, Z: at min stop, Z probe: at min stop"

is there a way to check everything is fine (before assemblying the whole printer mechanics)?

thanks, ciao
Andrea

dc42

@Jiarko for a NC NPN sensor you should omit the ! in the pin name.

Please post photos showing how you have wired the sensor to the tool board.

Jiarko

@dc42 here a photo: I've taken the power from the hotend terminal, than I've connected GND and "io0.in" of the "IO_0" connector.

I've omitted the "!" as you suggested, but now in the DWC I see the zProbe reading 1000 with the red bckg. is this correct? I thought it should be the opposite. In fact now in the "endstop" plugin I see Z as triggered, no matter if it is really triggered or not...

dc42

@Jiarko it looks to me that you have the ground and output wires swapped. The usual colour code for NPN sensors is that blue is ground and black is output.

Jiarko

@dc42 you are (obviously) right... I have wrongly connected the sensor wires.

now it's fixed!! thanks!!!

just one more question: if I want to have two "z" sensor, one for bed leveling and one for "safety", is it possible? do you have any recommendation (maybe it's not useful at all)?

dc42

@Jiarko you could have a second Z sensor that triggers a little below the main one and causes an emergency stop. You would need to make sure that it triggers later than the main one at all reachable XY coordinates.

Jiarko

@dc42 thanks again!!! to me this topic is clearly solved!!! thanks for your time!!