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synthetos / TinyG

Affordable Industrial Grade Motion Control
https://github.com/synthetos/TinyG/wiki
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Zmin Probe G38.2 Not Working #250

Open swpaxton66 opened 4 years ago

swpaxton66 commented 4 years ago

Hello!

I have a V0.97 TinyG with firmware build 440.20.

I had a touch plate Z probe setup working. Now it doesn't work.

I've confirmed no broken wires by continuity test.

I've set zsn to all possible settings.

Nothing fancy just a roach clip and a touch pad. When there is continuity it should trigger the tinyG to set Z zero. It just keeps on chugging.

Anyone have any ideas?

I'm thinking a board issue as it was working in the past. As far as I know I didn't change anything to affect it.

Thanks.

swpaxton66 commented 4 years ago

Forgot to mention.

st = 0

cmcgrath5035 commented 4 years ago

G38.2 is used for auto leveling. Should you be using G28.2 to Home Z using your touch plate?

I am not clear what "It just keeps on chugging" means

swpaxton66 commented 4 years ago

Hi thanks for the feedback. That was a typo on the GCode command. "keeps chugging" = means that once it contacts the touch plate it just keeps moving the z-axis down and doesn't register the hit.

cmcgrath5035 commented 4 years ago

Give https://github.com/synthetos/TinyG/wiki/Homing-and-Limits-Description-and-Operation a read. Do you have Z min set as home as well as NO (st=0)? Otherwise, it sounds like you are using this process https://github.com/synthetos/TinyG/wiki/Automatic-Z-Homing-When-Milling-PCBs Here is a thread using G38.2 probing https://openbuilds.com/threads/touch-plate-sends-z-axis-in-the-wrong-direction.11643/

swpaxton66 commented 4 years ago

Thanks On Wednesday, April 15, 2020, 04:27:43 p.m. EDT, Carl McGrath notifications@github.com wrote:

Give https://github.com/synthetos/TinyG/wiki/Homing-and-Limits-Description-and-Operation a read. Do you have Z min set as home as well as NO (st=0)? Otherwise, it sounds like you are using this process https://github.com/synthetos/TinyG/wiki/Automatic-Z-Homing-When-Milling-PCBs Here is a thread using G38.2 probing https://openbuilds.com/threads/touch-plate-sends-z-axis-in-the-wrong-direction.11643/

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