Prusa XL Accelerometer and GPIO Board
I see they came out with an Accelerometer and GPIO Board for the Prusa 4S. Any news on the same for the Prusa XL?
I thought I saw that the XL Nextruder has an Accelerometer connector.
RE: Prusa XL Accelerometer and GPIO Board
I am also very interested in this, as I know many other XL users are as well... yet we don't even warrant a response?
Seems like a valid request to me.
RE:
There may be third-party boards available that are compatible with the Prusa XL. You can search online forums and communities for recommendations
RE:
The XL ships with accelerometers in each Nextruder which is used for the input shaping calibration. You don't need to add one, it's already there.
source: https://blog.prusa3d.com/original-prusa-xl-now-shipping_75721/
Q: Does the XL extruder have an accelerometer built in?
A: Yes, it does – it’s vital for correct Input Shaper configuration (see above).
RE:
While that is technically true, it is misleading to the point of being offensive...
Yes, it comes with an accelerometer in each nextruder, but NO, we do not have access to it, nor is it used at all in the operation of the input shaping on our printers.
Prusa "pre-tunes" the printers in their lab (for their basic specs, resonances, etc.) and gives us their "one-size-fits-...some?" values to plug into our configs.
The sensors in our printers are never used to tune/modify/tweak those values at all... so if our resonance values are substantially different from the base values they ship with (and that is very common...think of all the different surfaces and supporting structures people's printers could be resting on.... each with different resonance parameters), then you will not get as much performance benefit from the input shaping.
In fact, in certain cases, your performance could actually be worse with input shaping enabled with their pre-determined values!
e.g. If their values don't line up with your resonance[s] perfectly, the input shaping can actually exacerbate the resonance problem and make your quality worse.
So yes, while they do technically have accelerometers, to those of us who understand how they work and what benefits (or, contrarily, problems) they can provide, simply having a sensor is useless, without the ability to access it for tuning purposes.
I'll go a step further and say the issue with Prusa support (or in this case, lack of it, since they are stonewalling us on this particular issue) is even worse, since the solution would cost them nothing aside from a simple code update.
After all, the hardware is, as you pointed out, already installed in each extruder.
The XL ships with accelerometers in each Nextruder which is used for the input shaping calibration. You don't need to add one, it's already there.
source: https://blog.prusa3d.com/original-prusa-xl-now-shipping_75721/
Q: Does the XL extruder have an accelerometer built in?
A: Yes, it does – it’s vital for correct Input Shaper configuration (see above).
RE: Prusa XL Accelerometer and GPIO Board
I'm probably misunderstanding something then. I can go to Settings > Input Shaper > Calibration and it'll run through a calibration process, pick up a head, shake it around while measuring resonances in X and Y at various frequencies and then sets up input shaping. Is that not making use of the built-in accelerometer, similar to how the phase stepping calibration cycle does?
RE:
Anyone heard if the GPIO will work with the XL?
RE:
While that is technically true, it is misleading to the point of being offensive...
Yes, it comes with an accelerometer in each nextruder, but NO, we do not have access to it, nor is it used at all in the operation of the input shaping on our printers.
Prusa "pre-tunes" the printers in their lab (for their basic specs, resonances, etc.) and gives us their "one-size-fits-...some?" values to plug into our configs.The sensors in our printers are never used to tune/modify/tweak those values at all... so if our resonance values are substantially different from the base values they ship with (and that is very common...think of all the different surfaces and supporting structures people's printers could be resting on.... each with different resonance parameters), then you will not get as much performance benefit from the input shaping.
In fact, in certain cases, your performance could actually be worse with input shaping enabled with their pre-determined values!
e.g. If their values don't line up with your resonance[s] perfectly, the input shaping can actually exacerbate the resonance problem and make your quality worse.So yes, while they do technically have accelerometers, to those of us who understand how they work and what benefits (or, contrarily, problems) they can provide, simply having a sensor is useless, without the ability to access it for tuning purposes.
I'll go a step further and say the issue with Prusa support (or in this case, lack of it, since they are stonewalling us on this particular issue) is even worse, since the solution would cost them nothing aside from a simple code update.
After all, the hardware is, as you pointed out, already installed in each extruder.
The XL ships with accelerometers in each Nextruder which is used for the input shaping calibration. You don't need to add one, it's already there.
source: https://blog.prusa3d.com/original-prusa-xl-now-shipping_75721/
Q: Does the XL extruder have an accelerometer built in?
A: Yes, it does – it’s vital for correct Input Shaper configuration (see above).
Where are you getting this information from. I think your thinking about the MK4 which does not have an accelerometer and it's factory tuned.
On the XL you run input shaping calibration where the print head goes thru a series of movements in different directions to calibrate the input shaping values for both the x and y axis.
To add to that you can alter the input shaping values if you choose to in the settings on the printer. So if you don't believe the values you can run some calibration prints and change the values as you wish.
So I think you may have been given misleading information.