So, I finally got annoyed at having to mess with the cable tie in order to remove/replace the BerdAir in order to swap nozzle and such. So, I scavenged the springs from two old ball point pens. It works quite nicely. Here's a video of said "hack".
Best posts made by janjoh
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My little Spring hack for BerdAir on Smart Effector
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"tilt sensing" via Accelerometer
So, now that we're starting to see accelerometer support in firmware. Would it not be plausible to use that to detect "catastropic tilt" in delta effectors?
I mean, if a rod pop, belt snap or similar, the effector will tilt out of whack in a non to subtle fashion, which would be nice to be able to detect?(I suppose it could also be used to detect general "impacts" regardless of kinematic? Even "lack of even an approximate expectation of tool movement" if a kinematic fail was to occurr?
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RE: My little Spring hack for BerdAir on Smart Effector
@felt342 The normal 540-size brushed 24V. If i had more money I'd try a Kamover KVP8. If I had even MORE moneis i would try an airbrush compressor with a servo valve
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Multiplier for fan speed?
So, the doc is pretty clear https://docs.duet3d.com/en/User_manual/Connecting_hardware/Fans_connecting#connecting-fans-to-duet-fan-pins states that it expects Intel spec fans, as in two pulses per revolution.
I happen to use a blower that has a signal at which 1Hz means 60rpm. Any way to fudge the value so that the DWC shows the actual value?
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RE: Erase and rewind (So to speak)
@Danal Ah. Thank you for the clarification.
I decided that I'd see what happen if i use a "default" Cura profile and just change retracts and temps. Just to see what it will do.
I have a feeling that 3 years of "tinkering" probably has accumulated a lot of issues and "tweaks for issues that causes new issues" ... so to speak
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RE: "tilt sensing" via Accelerometer
@o_lampe I have no idea what the overhead would be. But again, I suppose an interval check would be better then no check.
Magnet field sensor on a smart effector with Hayden rods.. That would be fun readings
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RE: Smart effector and trigger height (and a few new grey hairs)
@fcwilt Noooooooooooo... (or rather yes)....
Yeah, that's spot on... at Z0.32 I can now get a 0.30 feeler in. At Z0.28 I can not.
So, that was flipping silly of me..... Especially as this means that my start script was correct, but my manual testing was (really) flawed... Sigh.
Nothing to see here... move on...
Thank you.
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RE: Multiplier for fan speed?
@dc42 THank you for confirming. I've added such a request now, while at the same time understanding that this is in every way a cosmetical low priority wish
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RE: Error Short to Ground reported by driver(s)
@davidewen said in Error Short to Ground reported by driver(s):
"Could not connect to COM4 at baud rate (tried 9600 & 11500): PermisionError(13, 'Access is denied.' None,5)
"Could not connect to COM4 at baud rate (tried 9600 & 11500): PermisionError(13, 'Access is denied.' None,5)
Error 13 is exactly what the message says. Your process does not have permission to access the port. Usually fixed by running whatever tool in administrative mode.
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RE: Faulty smart effectors (yes, plural)
@Phaedrux Thank you for the comment on refurbed units. I do however think that I will not put any more money into smart effector until (maybe) such a time as the mythical updated version may become available. I have a fairly reliable machine, and I know how to use a feeler gauge.
Latest posts made by janjoh
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RE: Multiplier for fan speed?
@cosmowave While the thought HAD crossed my mind, i figured that it is not that important.
I however tip my hat for a creative workaround
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RE: 7040 CPAP blower and Duet 2 wifi
@janjoh Yeah, After pondering this I think stealing a heater from the expansion connector makes more sense.
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RE: Multiplier for fan speed?
@dc42 THank you for confirming. I've added such a request now, while at the same time understanding that this is in every way a cosmetical low priority wish
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Multiplier for fan speed?
So, the doc is pretty clear https://docs.duet3d.com/en/User_manual/Connecting_hardware/Fans_connecting#connecting-fans-to-duet-fan-pins states that it expects Intel spec fans, as in two pulses per revolution.
I happen to use a blower that has a signal at which 1Hz means 60rpm. Any way to fudge the value so that the DWC shows the actual value?
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RE: Connecting a BLDC Controller to Duet Mainboard 6HC
@o_lampe Actually, I think you tagged the wrong person there?
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RE: Connecting a BLDC Controller to Duet Mainboard 6HC
@o_lampe Oh fair point. Yeah, so in this case PWM to acheive 0-5V probably is what will happen.
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RE: Connecting a BLDC Controller to Duet Mainboard 6HC
@SANJR I would personally not draw this as "replacing the resistor", yes, they all use the sam control input but it just looks odd. Also keep in. mind that the fan connectors use low side switching (as you normally do). They are not high side switching.
You should consult page 5 in the documentation for the driver. This is what I would use;
"Motor Speed Adjusted By Pulse Rate Input:
Pulse rate: 0K—3KHZ Speed linear modulation
Pulse amplitude: 5V Pulse duty ratio: 50%
SW1/ On (User setting) RV—Turn Off
J7 (Internal)/ Switch on with the jumper cap on J1 (User setting)" -
7040 CPAP blower and Duet 2 wifi
I am fairly certain that I have found a thread on this before, but now I can only find on on duet3 using the VFD pin.
Am I correct in guessing that for the duet 2 I should use a pull up resistor for the signal pin of the pwm input pin on the blower esc and then it should work with the fan pins as they are low side switching?
Or would it make more sense to borrow a gpio from the expansion port for this application? -
RE: Wiring extra thermistors?
@droftarts Yeah, that makes perfect sense, and it was my first though. But I figured that it was worth to aske
Thank you. You have been most kind and helpful!
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RE: Wiring extra thermistors?
@droftarts Thank you.
So, that begs the question, what design choice excluded the resistors from the extra connectors?
Is it because "Well, technically the pins can be used for anything, we've just labelled them as thermistors." alternatively "It saves €0.05 per manufactured unit"."
or is it something else I am missing?
(Not criticism (i certainly have a few resistors around here somewhere.. or everywhere... Just curiosity.)