Noise Filters

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Andy589
Posts: 2
Joined: Mon Feb 10, 2020 10:43 pm

Noise Filters

Post by Andy589 » Mon Feb 10, 2020 11:11 pm

Hi,
I have an issue, even with the 3.5.1 cnc-shield when the spindle turns to max rpm an endstop triggers (sometimes). Are the filters to weak? What values do the RC filters have (capacity+resistance)? I use NC endstops. Maybe someone here can help me. Thank you!

Bertus Kruger
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Re: Noise Filters

Post by Bertus Kruger » Tue Feb 11, 2020 6:52 pm

Andy589 wrote:
Mon Feb 10, 2020 11:11 pm
Hi,
I have an issue, even with the 3.5.1 cnc-shield when the spindle turns to max rpm an endstop triggers (sometimes). Are the filters to weak? What values do the RC filters have (capacity+resistance)? I use NC endstops. Maybe someone here can help me. Thank you!
C = 0.047uF
R= 680R

Have you tried NO endstops? GRBL recommends that...

Andy589
Posts: 2
Joined: Mon Feb 10, 2020 10:43 pm

Re: Noise Filters

Post by Andy589 » Fri Feb 21, 2020 9:25 am

Yes i tried. But my Z Limit triggers, maybe it´s too close too the spindle?

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