Hints for accelerometer placeing

[A Former User]

@t3p3tony said in Hints for accelerometer placeing:

@thedragonlord the input shaping plugin will show the detected frequencies see this thread for the latest development of the plugin:
https://forum.duet3d.com/topic/24859/inputshaping-plugin-0-1-0-rc7-released-repacked/15

this is the accelerometer I've bought: https://www.ebay.it/itm/273191600064 (of course I'll upgrade the FW to 3.4 beta 2) in your opinion a normal non shielded flat ethernet cable like this https://www.amazon.it/gp/product/B00UPHN938/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 (wich I already own) could be fine? (Of course following the hint to keep the CS cable as far as possible from other signal cables). In case not what cable would be best?

Thanks

[gloomyandy]

@thedragonlord No idea if the flat ethernet cable will work or not, you probably just have to try it. If it doesn't then several folks (including myself) have been successful using USB3 cable and wiring in the way described here: https://forum.duet3d.com/topic/22878/software-package-3-3beta3-released/68?_=1624809172098

[A Former User]

@gloomyandy said in Hints for accelerometer placeing:

@thedragonlord No idea if the flat ethernet cable will work or not, you probably just have to try it. If it doesn't then several folks (including myself) have been successful using USB3 cable and wiring in the way described here: https://forum.duet3d.com/topic/22878/software-package-3-3beta3-released/68?_=1624809172098

excellent, thanks

[amjm22]

I have a Delta printer using a Duet smart effector, I'm using a Duet3d 6hc3 sys board.

Where would you mount an accelerometer to the smart effector?

Wiring is not the issue, it is the physical location.

[dc42]

@amjm22 I mounted mine on top of the effector, using a single screw to attach it to one of the 3 mounting holes in the effector, with a couple of nuts as spacers.

[ignacmc]

@dc42 Any rigid location on top of the effector could suffice?
I am thinking of using double side tape, or printing a small base to be glued on top

[amjm22]

@dc42 Much appreciated! I will give it a shot when the accelerometer arrives! i post the results.

[dc42]

@ignacmc said in Hints for accelerometer placeing:

@dc42 Any rigid location on top of the effector could suffice?

Yes. Here is a photo of the way I mounted mine.

[janjoh]

@dc42 That photo made me smile. I came here looking for advice on accelerometer placement, and invisioned all sorts of fancy printed mounts. Then I find this. Quick. Cheap. Efficient. Moving on.

Thank you.

[tommyb]

@janjoh I would guess the corner mount like will have it's own artifacts. It may or may not matter, but looks like a spring board and will certainly have a dominant frequency related to the mounting alone. Simply test on a nice solid block of Al or something by mounting in the same fashion and give it a few taps in x, y, z directions and see what you get.

[dc42]

@tommyb if the screws are tight then I am sure that the resonant frequencies of the mounting mechanism will be much higher than those of the arms + effector mass that I am interested in.