Pololu G2 current sense output for Spindle load meter?
31 Mar 2019 14:57 #130034
by 3D-Master
Replied by 3D-Master on topic Pololu G2 current sense output for Spindle load meter?
is it possible, to only output the peak value? because the filtered value is approx. half of the peak value. Or maybe i could just scale it up
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03 Apr 2019 14:51 - 03 Apr 2019 14:52 #130199
by andypugh
Replied by andypugh on topic Pololu G2 current sense output for Spindle load meter?
You could write a custom HAL component, but AFAIK there is no built-in peak-hold in HAL.
(Note that you don't want a pure peak-hold, you want a peak-hold with reset)
You could build it from standard blocks, but it would be a bit ungainly.
1) Use ddt to get the rate of change
2) use abs and use the is-negative output as the peak trigger.
3) Use a mux2 with the output wired to the in0 input as a peak-holder
4) pass the is-negative to an edge set to a very short time to trigger the mux select to take a new sample.
(Note that you don't want a pure peak-hold, you want a peak-hold with reset)
You could build it from standard blocks, but it would be a bit ungainly.
1) Use ddt to get the rate of change
2) use abs and use the is-negative output as the peak trigger.
3) Use a mux2 with the output wired to the in0 input as a peak-holder
4) pass the is-negative to an edge set to a very short time to trigger the mux select to take a new sample.
Last edit: 03 Apr 2019 14:52 by andypugh.
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