I bought a bag of npn-no 2mm prox switches.
I either do not grok the nomemclature or the label on the connecting 3 wire
cord is wrong.
They claim to be NO, the contact is made, NC in my book, until they are
tripped by detecting something ferrous, at which point they are then open.
I'm having trouble gaining terminal access to this machine but I assume
a gcode
but in a file with the extension .gcode, will work if printed from an sd
card.
It looks as if M119 might NOT be the command I need to invert the sense
logic,
as its currently moving away from the nozzle while trying to home Z.
From the marlin pages, M119 is to get the current states of all endstops.
M120 enables them, M121 disables them.
But I don't see a command to invert that logic. So other than making a
board with a 4049
or similar inverter on it and hiding it in the junction box I've made,
what use of these
prox switches is possible? Or rebuilding marlin from the src, provided I
can get the
config from creality, they have been considerably less than helpful in
the past.
Thanks all.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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