If you're not using all the limit switch connectors, the easiest thing
would be to just connect one of those to your button. You would turn it
into a start/continue button via HAL wiring.
Also, I'm not familiar with the Protoneer boards you're using, got a
link? If they are just straight wiring, like these:
https://www.ebay.com/itm/Pololu-connector-socket-converter-jumper-board-for-External-Driver/202696098969
...be very careful. There is no buffering on the CRAMPS board for the
step/dir signals, so these will be low drive 3.3V logic directly
connected to the BeagleBone. It is *VERY* easy to fry the BBB if you
ever go above 3.3V or below Gnd on these I/O signals.
On 4/11/2020 11:01 PM, Hong Mai Ha Osterstrom wrote:
I am using a Beaglebone / CRAMPS 2.2 cape fitted with Protoneer ‘Pololu
Socket To External Driver conversion boards’ to provide signals to the
large drivers and steppers on my (bigger-than-a-Bridgeport) retro-fitted
Induma mill. The X and Y axis's are working as they should so I can use the
mill in 2 axis mode to build the mounting hardware for a CNC quill feed to
give me a Z axis.
Every thing is going fine but I really, really miss having a working
‘Start / Continue’ button right next to the big red E-Stop button on the
head of the mill. I have a fun little 3D printer so I quite understand why
the CRAMPS cape doesn’t need to implement such a button but I am dealing
with several hundred pounds of Iron moving at 4+ inches a second. Mousing
about on a simulation of what I hope is happening is not the same as facing
what is really happening with my thumb hovering over the E-Stop button.
I ran LinuxCNC on a friends mill in the late 1990s and it had a real
‘Start / Continue’ button. Did that capability get carried over into
Machinekit and if so, where does it emerge on the Beaglebone? I already
have a pair of 2 X 23 stacking headers between the Beaglebone and the
CRAMPS cape to improve cooling so it would be no big deal to add a breakout
board. Any information would be welcome.
By the way, I am using my wife's account. My name is Gordon Osterstrom
--
Charles Steinkuehler
[email protected]
--
website: http://www.machinekit.io blog: http://blog.machinekit.io github:
https://github.com/machinekit
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