Reduce power to steppers when not moving
13 Aug 2018 07:17 #115990
by Ralf
Replied by Ralf on topic Reduce power to steppers when not moving
Thanks, I actually think that I understand what's going on there.. 
Will test out tonight..
If I want to add a hysteresis to prevent powerdown from flickering up and down, could I abuse the debounce component, combined with an or gate like this ?
I would assume that the or gate would be needed, since the debounce seems to work in both directions, and would would cause a delay before the steppers would be enabled on move, if wired directly to the output.
Or does a timer module exists, with a simple countdown function, instead of using debounce?
And where would I put all of this, custom.hal or custom_postgui.hal?
Will test out tonight..
If I want to add a hysteresis to prevent powerdown from flickering up and down, could I abuse the debounce component, combined with an or gate like this ?
loadrt near
addf near.0 servo-thread
setp near.0.in2 0
setp near.0.difference 0.00001
net velocity motion.current-vel => near.0.in1
loadrt debounce cfg=1
addf debounce.0 servo-thread
setp debounce.0.delay 1000
net debounce-in <= near.0.out => debounce.0.0.in
loadrt or2
addf or2.0 servo-thread
net powerdown-1 or2.0.in0 <= near.0.out
net powerdown-2 or2.0.in1 <= debounce.0.0.out
net powerdown or2.0.out => PinToEnableLowPowerModeI would assume that the or gate would be needed, since the debounce seems to work in both directions, and would would cause a delay before the steppers would be enabled on move, if wired directly to the output.
Or does a timer module exists, with a simple countdown function, instead of using debounce?
And where would I put all of this, custom.hal or custom_postgui.hal?
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