NPN inductive endstop 5v to 3.3v
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Ok all axis are working correctly except for Z. I think it is trying to use a probe. I can run and M119 to check the state of the three inductive sensors and they are not triggered the I can move the axis to there end stops to trigger. I run M119 to check the states again and all three change state but but when I try to home the Z it just crashes.
Should I make a new thread for this question and put it in the firmware section? BTW thank you DC42 for the response.
On another note I had all 3 axis and my extruder set to 256x with no interpolation and they can't barely move at 300mm a second. If I go in and set them up like my old controller board at 16x microstepping it will dry run at 900mm a second. I'm thinking it my be my stepper driver pulses being sent may have hit a cap. Is there a max pulses that I can be sent if so can it be raised?
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You need to set up the homez.g and homeall.g files according to whether you are homing Z with an endstop switch or a Z probe. See https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Homing_Z_using_a_Z_probe and the following section.
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I suggest the same wiring as for an NPN inductive Z probe, see https://duet3d.com/wiki/Connecting_a_Z_probe#NPN_output_normally-open_inductive_or_capacitive_sensor. However, as your endstops can work on 5V, it should be safe to power them from 5V and connect the output directly to the endstop input without the diode.
Hi based on that article would this work? https://za.rs-online.com/mobile/p/rectifier-schottky-diodes/7044013/
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I suggest the same wiring as for an NPN inductive Z probe, see https://duet3d.com/wiki/Connecting_a_Z_probe#NPN_output_normally-open_inductive_or_capacitive_sensor. However, as your endstops can work on 5V, it should be safe to power them from 5V and connect the output directly to the endstop input without the diode.
Hi based on that article would this work? https://za.rs-online.com/mobile/p/rectifier-schottky-diodes/7044013/
Anybody?
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@eviltoy, Use a small-signal Schottky diode such as BAT43 or BAT85
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Use a small-signal Schottky diode such as BAT43 or BAT85
I get that but my question was more around whether the diode I linked to would work for the application as I have them in bucket loads
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Well it's not a Schottky type, but David mentions that you can get away with a normal small signal diode.
I would say try it before connecting it to your Duet, measure the voltage you get… -
You can try it, but that's not a Schottky diode so the forward voltage may be too high for it to work.
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Cool will do tonight thanks so much. Its my first duet so dont want to mess it up
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Right so the ones I had were an utter fail and didnt work. So I am getting the right ones. Just to confirm I need to get either one of the following :
http://za.rs-online.com/web/p/rectifier-schottky-diodes/2513025/
http://za.rs-online.com/web/p/rectifier-schottky-diodes/1038145/ -
Right so the ones I had were an utter fail and didnt work. So I am getting the right ones. Just to confirm I need to get either one of the following :
http://za.rs-online.com/web/p/rectifier-schottky-diodes/2513025/
http://za.rs-online.com/web/p/rectifier-schottky-diodes/1038145/Yes that's correct.
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Right so the ones I had were an utter fail and didnt work. So I am getting the right ones. Just to confirm I need to get either one of the following :
http://za.rs-online.com/web/p/rectifier-schottky-diodes/2513025/
http://za.rs-online.com/web/p/rectifier-schottky-diodes/1038145/Yes that's correct.
Thanks so much will be getting them then
