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Discussion in 'Motion System' started by twam, Dec 22, 2019.
@twam With the modifications how loud is it now compared to the mk3 on normal mode?
By lowering the current, you may experience a problem with homing not working reliably. If you change the current on a permanent basis, add something to increase to 1800 again in the home.g.
I was able to lower the noise a lot by changing the hotend cooling fan's speed to 128, and did not experience any problem with hour-long prints.
My silent macro:
M106 P1 S128 H1 T70 ; reduce hotend fan speed T0
M106 P3 S128 H2 T70 ; reduce hotend fan speed T1
M106 P5 S128 H3 T70 ; reduce hotend fan speed T2
M106 P7 S128 H4 T70 ; reduce hotend fan speed T3
M906 X1000 Y1000 ; decrease current for x / z motor, reset to 1800 on homing
M204 P1000 T3000 ; decrease acceleration for print moves
karma ... 10 minutes after posting, the hemera clogged ... can't recommend to lower the hotend fan's speed ;-)
The TMC2660 drivers on Duet 2 also support a feature called coolStep, which can be used to reduce current (and therefore motor noise) at low speeds.
Could you add the step file for that design please?