[Grbl_Esp32 Issue#41] pullup lim z not work

#1 – bdring 于 2018-10-10

That sounds like a problem with your ESP32.

#2 – hexxter 于 2018-10-11

i have fixed ist for me and use the mist pin for the z limit and no it works fine

#3 – gflaser-au 于 2018-10-11

@bdring For the next hw rev it could be a good idea to add some (bottom-side?) footprints for some extra pullup resistors. It could be helpful for those of us throwing a few tens of kilovolts around only a few inches away. (No-fit on your std hw build; just add the footprints)
Even for the Nano, most common recommended solution to false triggering hard limits is a more solid pullup than the chip provides (as well as RC filter network which looks to be already in place.)

or optos

#4 – bdring 于 2018-10-11

I will consider that for future revisions.