I heard going with a higher voltage than 12v can solve the whine problem

3D Printing
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I heard going with a higher voltage than 12v can solve the whine problem with the TMC2100 drivers so I made a mod to my HPB and fitted the new 24v E3D v6. Using a 24v 300W (400W peak) Audio power supply.

Sad face Still noisy. I can change the pitch using the decay but I guess my hearing range is still pretty good.

I don’t want to go stealthchop because of the decrease in accuracy so my next move is pulling apart the steppers and applying a resin or glue to the windings so see if that helps to stop them singing - do only one first though.

Any other thoughts?

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Change steppers!

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I don’t have a simulator built for TMC2100 choppers yet, unfortunately… do you guys know if it’s high-inductance motors or low-inductance motors that whine? Or does it seem pretty random?

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It appears that larger steppers are more quiet than smaller, but it is most likely related to the inductance.

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So I went ahead to see what adding Lacquer to the windings would do (MG4226 Corona dope because I had some at work) and it did help a little but that tone just cuts through. I played a little around and found setting the decay to 0 helped ALOT. What does the scale of decay mean? It confused me a little in the documentation and how it translates to the TMC2100 datasheet wasn’t quite clear.