Inductive Z-height sensing May 07, 2015 12:04PM |
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Re: Inductive Z-height sensing May 07, 2015 04:21PM |
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Re: Inductive Z-height sensing May 07, 2015 05:30PM |
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Re: Inductive Z-height sensing May 08, 2015 07:49AM |
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Re: Inductive Z-height sensing May 08, 2015 01:24PM |
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dmould
Interesting. Do you get consistent values at the edges, corners and center of the bed?
Dave
Re: Inductive Z-height sensing May 09, 2015 11:11AM |
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Re: Inductive Z-height sensing May 09, 2015 11:25AM |
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Re: Inductive Z-height sensing May 09, 2015 12:06PM |
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Re: Inductive Z-height sensing May 09, 2015 03:42PM |
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Re: Inductive Z-height sensing May 09, 2015 06:30PM |
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Re: Inductive Z-height sensing May 09, 2015 06:39PM |
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Re: Inductive Z-height sensing May 09, 2015 06:55PM |
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I guess I ought to take a look but I find it hard enough finding time to keep up with posts in this forum alone. Really I'm just playing around with the analog circuit and magnetics for the fun of it. Makes a nice change from coding all day. I read how you wanted to concentrate on IR surface sensing and I agree that's probably the best all-round solution - especially seeing as it only requires a few inexpensive components.Quote
dc42
There are some posts on other RepRap forums about using off-the-shelf inductive sensors for this purpose too.
Re: Inductive Z-height sensing May 13, 2015 05:43PM |
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P4 selects a switch (on the Duet, this must be connected to the E0 endstop pins).
Re: Inductive Z-height sensing May 13, 2015 06:41PM |
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Radian
I'm having a hard time getting Z homing to reach a consistent height using an analogue voltage. I know the voltage I generate proportional to Z height is consistent and I know the analogue ground and general hash in the Duet is causing the reading to jitter as discussed before.
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Radian
So is there anything wrong with me simply thresholding my detection to produce a digital high or low as though Z was a micro-switch homed axis? More specifically would bed leveling still work - and would X homing still take Z as the trigger?
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Radian
I'm not understanding the description for M558: [reprap.org]
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P4 selects a switch (on the Duet, this must be connected to the E0 endstop pins).
Why not the Z endstop pins?
Re: Inductive Z-height sensing May 14, 2015 09:36AM |
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Z=0mm = 3.3V out, the web interface reads back 590 to 625 Z=10mm = 0V out, the web interface reads back 405 to 460
Re: Inductive Z-height sensing May 14, 2015 10:01AM |
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Re: Inductive Z-height sensing May 14, 2015 01:00PM |
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Re: Inductive Z-height sensing May 14, 2015 01:36PM |
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Re: Inductive Z-height sensing May 14, 2015 02:08PM |
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dmould
Extending the tab need not lose you any table - just set the X trigger position as being X=10 (or whatever) in the X homing file macro.
Dave
Re: Inductive Z-height sensing May 14, 2015 03:35PM |
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