#garfield Logs

Jul 17 2023

12:01 AM rue_mohr: I'll have to tune the servos at some point
12:11 AM rue_mohr: or use different drivers, the steps sound really really rough
01:13 AM rue_mohr: / Ignore limit switches if already in an alarm state or in-process of executing an alarm.
01:13 AM rue_mohr: // When in the alarm state, Grbl should have been reset or will force a reset, so any pending
01:13 AM rue_mohr: // moves in the planner and serial buffers are all cleared and newly sent blocks will be
01:13 AM rue_mohr: // locked out until a homing cycle or a kill lock command. Allows the user to disable the hard
01:13 AM rue_mohr: // limit setting if their limits are constantly triggering after a reset and move their axes.
01:13 AM rue_mohr: ""
01:13 AM rue_mohr: ah
01:15 AM rue_mohr: // The active cycle axes should now be homed and machine limits have been located. By
01:15 AM rue_mohr: // default, Grbl defines machine space as all negative, as do most CNCs. Since limit switches
01:15 AM rue_mohr: // can be on either side of an axes, check and set axes machine zero appropriately. Also,
01:15 AM rue_mohr: // set up pull-off maneuver from axes limit switches that have been homed. This provides
01:15 AM rue_mohr: // some initial clearance off the switches and should also help prevent them from falsely
01:15 AM rue_mohr: // triggering when hard limits are enabled or when more than one axes shares a limit pin.
01:15 AM rue_mohr: mhm
01:15 AM rue_mohr: so, on my machine, I set a job-local 0,0
01:16 AM rue_mohr: I use the pendant to position the machine at that zero for the job
01:16 AM rue_mohr: usually, 0,0 is somewhere in the middle of my job, or on some notable feature
04:47 AM Tom_L: zero can be anywhere as long as it matches the cad file
04:54 AM Tom_L: look at + & - from the tool pov relative to the work
07:27 AM rue_mohr: mornin
07:27 AM rue_mohr: g
07:31 AM Tom_L: morning
07:38 AM aandrew: "Ignore limit switches if already in an alarm state or in-process of executing an alarm."
07:38 AM aandrew: that sounds like a feature or option that was borne out of a hard-learned lesson
07:38 AM rue_mohr: well, I was wondering how they worked from the wiring
07:39 AM rue_mohr: because it looked like there was no way to get it off a limit switch, except with a manual handle
07:39 AM rue_mohr: and my machine doens't have any
07:39 AM rue_mohr: I have the step interceptor
07:39 AM rue_mohr: but its got no limit provisions
07:41 AM rue_mohr: Tom_L, so, it seems to be 5TPI
07:41 AM rue_mohr: the dial indicator was saying "no, not quite" at 5mm pitch
09:35 AM Tom_L: so the ballscrews are probably pretty decent
04:39 PM polprog: im teaching my gf KiCad so she can design a keyboard converter for a sharp x68k computer
04:40 PM polprog: its gonna have an rp2040 and a usb hub for two host ports
06:37 PM rue_mohr: :)
06:53 PM Tom_L: rue_mohr, still got all 10 digits?
08:51 PM aandrew: I didn't think he lost any, just mangled one or two
09:22 PM rue_shop2: just mangled one
09:22 PM rue_shop2: its in repair mode
09:31 PM rue_shop2: ok, spindle is working, what shall I try cutting?
09:31 PM rue_shop2: DONT SAY MY FINGER
09:32 PM aandrew: heh
09:32 PM Tom_L: try some wood til you get a feel for it
09:32 PM Tom_L: butter?
09:34 PM rue_shop2: heh, foam?
09:34 PM rue_shop2: :]
09:34 PM rue_shop2: huh
09:35 PM rue_shop2: the motors are ok with a fairly high acceleration and its a trip to get used to
09:35 PM rue_shop2: hmmm
09:35 PM rue_shop2: wood, then maybe have it make some T nuts for itself
10:02 PM Tom_L: what ipm do you think the rapids are?
10:14 PM rue_shop2: I seem to be able to get about 400mm/min
10:14 PM rue_shop2: so 15.7
10:15 PM rue_shop2: I'm not sure if its tuning or not, but I get skips much over that
10:15 PM rue_shop2: ok, I made some clamps and bolted down a sacraficial wood base
10:15 PM rue_shop2: surfaced it with pendant
10:18 PM rue_shop2: I think the motor current is a bit too high for the microsteps to work right
10:24 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1290012.jpg
11:07 PM rue_shop2: its nice and solid, no rattle when it plunges
11:07 PM aandrew: https://www.reddit.com/r/kitchener/comments/152heun/did_anybody_else_see_this_shit/
11:07 PM aandrew: lol that's my town
11:13 PM rue_shop2: they didn't put any attachment points on the head of this machine, it will be some fun trying to hook up coolant
11:14 PM aandrew: magnets
11:14 PM rue_shop2: aandrew, its not viewable without an account
11:14 PM aandrew: rue_shop2: ah, basically a vandalized sign
11:15 PM rue_shop2: ah
11:16 PM rue_shop2: well
11:17 PM rue_shop2: I suppose I'll start a new main cable and start using it to make parts for itself
11:17 PM rue_shop2: Tom_L, so, cutters, there is speed and depth of cut
11:18 PM rue_shop2: but I'v only seen speed calcualtgors
11:18 PM aandrew: the magnets I used to secure the solar panel to the container roof are really strong
11:18 PM rue_shop2: :]
11:18 PM rue_shop2: I think its aluminum
11:18 PM aandrew: that would not work then
11:18 PM aandrew: hm
11:19 PM rue_shop2: yep, the parts that aren't epoxy-granite are aluminum
11:19 PM aandrew: I guess you could always drill and tap a few holes
11:20 PM aandrew: or even weld a nut or two on the surface
11:20 PM rue_shop2: 1/2" aluminum
11:20 PM rue_shop2: I have to know more , but yea
11:44 PM rue_shop2: says 3Nm holding torque