#garfield Logs
Dec 01 2021
#garfield Calendar
12:53 AM rue_mohr: the problem is that I'm using hard cutoffs
01:01 AM rue_mohr: v = level; // freeze!
01:01 AM rue_mohr: flag = 1;
01:01 AM rue_mohr: v /= 6.14; // reduce to pseudosteps, this also gives us a bit of noise immunity.
01:01 AM rue_mohr: if (v != output) {
01:01 AM rue_mohr: if (v > output) {
01:01 AM rue_mohr: stepForward();
01:01 AM rue_mohr: output++;
01:01 AM rue_mohr: } else {
01:01 AM rue_mohr: stepBack();
01:01 AM rue_mohr: output--;
01:01 AM rue_mohr: }
01:01 AM rue_mohr: }
01:01 AM rue_mohr: I need to add some schmitt
01:01 AM rue_mohr: my brain is having issues right now
01:01 AM rue_mohr: but its after bed
01:18 AM rue_mohr: ok, I think I got a solution
01:19 AM rue_mohr: I just offset the ADC reading by 0 or 6 depending if I just went up or down a unit.
01:23 AM rue_bed2: I think changes I made to my serial port code mess up the terminal stuff somehow
01:23 AM rue_bed2: I need to do a bunch of interaction testing
04:41 PM polprog: Hey rue
04:41 PM polprog: How do you call these?
04:41 PM polprog: https://www.kammar24.pl/gravurem-znaczniki-numeratory-cyfrowe-0-9-ekstra-mocne-8mm-p-65386.html
04:41 PM polprog: I bought myself a (cheaper) kit for secret santa :)
04:42 PM Tom_L: letter stamps?
04:42 PM Tom_L: i have a number set
04:42 PM Tom_L: used them for marking connecting rods etc on engine parts
04:44 PM Tom_L: https://www.amazon.com/Pittsburgh-Piece-Letter-Number-Stamping/dp/B006ZBC4TS
04:45 PM Tom_L: those are too big though
05:08 PM polprog: I got a set of 6mm ones
05:09 PM polprog: $10
05:09 PM polprog: I hope they are not single use, but i wont be marking hard metals
05:09 PM Tom_L: that's a good size
05:10 PM Tom_L: what are you marking?
05:10 PM polprog: Nothing in particular
05:10 PM polprog: I was at the lab today and saw a device with labels made that way
05:10 PM polprog: And i thought if i ever make a metal front panel id like to be able to mark an s/n or date on it
05:11 PM Tom_L: sn #1
05:11 PM Tom_L: :)
05:11 PM polprog: :)
05:12 PM Tom_L: they usually have a divit on one side of the tool so you know which way is up
05:12 PM polprog: I need a heart shaped marker so i can mark "Made with <3 at xyz" like all .io websites have
05:12 PM polprog: I cant wait to get them :)
05:12 PM Tom_L: i've had my number set for many years
05:12 PM polprog: What were you marking?
05:13 PM Tom_L: ^^
05:14 PM Tom_L: used them for marking connecting rods etc on engine parts
05:16 PM polprog: Ah right
05:17 PM polprog: Maybe ill be making nameplates for my boxes :p
05:17 PM Tom_L: see now you need to build a cnc for that
05:18 PM polprog: I study photonics, so it would need to be an xy stage and a femtosecond laser
05:18 PM polprog: They are used for marking
05:18 PM Tom_L: i'd love to have one of those
05:18 PM polprog: i saw ome today
05:19 PM polprog: You can even burn optical structures on metals to make color markings
05:19 PM polprog: Mostly a gimmick when it comes to industrial marking but pretty cool sruff
05:19 PM polprog: Stuff*
05:19 PM polprog: Im learning how these lasers work
05:19 PM polprog: There are many parts
05:35 PM Tom_L: nice
05:35 PM polprog: next thing i design i want to give it a front panel like this
05:35 PM polprog: or maybe even a general card form factor
05:36 PM polprog: https://polprog.net/rozne1/ircjunk/various/circuitcard_sketch.jpg
05:46 PM polprog: gnight
05:47 PM Tom_L: l8r
07:08 PM rue_mohr: hi
07:11 PM rue_mohr: thinnet!?
07:11 PM rue_mohr: why are there bodge wires...
07:16 PM Tom_L: hi
07:16 PM rue_mohr: hi
07:33 PM Tom_L: so
07:33 PM Tom_L: this guy in linuxcnc is hell bent on making a coil gun
07:33 PM Tom_L: https://imgur.com/a/kwFalRb
07:34 PM Tom_L: but can't get past the current when the coil collapses. pops mosfets like firecrackers
07:38 PM Tom_L: https://www.st.com/resource/en/datasheet/sct20n170.pdf
07:41 PM rue_mohr: uhu
07:41 PM rue_mohr: yea
07:43 PM Tom_L: i would not attempt such a thing
07:43 PM rue_mohr: the wild ones are the cascade guns
07:44 PM Tom_L: i guess he made a smaller one way back
07:44 PM rue_mohr: its like dominos, but each one is much larger
07:44 PM Tom_L: yeah
07:44 PM Tom_L: like a rail gun?
07:44 PM rue_mohr: my rail gun would cause the marble to hop and fuse to the track
07:45 PM rue_mohr: I decided it wasn't worth persuing
07:45 PM rue_mohr: and honestly
07:45 PM rue_mohr: with just a few bucks, you can make a laser gun that really can hurt people
07:46 PM Tom_L: one of those laser markers like polprog was talking about would be interesting
07:46 PM Tom_L: my carbide tools are marked that way
07:50 PM rue_mohr: ok, I'm gonna go to a movie with a buddy
07:50 PM rue_mohr: hopyfull I dont die
07:50 PM rue_mohr: in 1 hour I need to leave
07:51 PM Tom_L: k
10:03 PM aandrew: are any of you guys doing AOC this year? https://adventofcode.com/
10:03 PM aandrew: it's all plain text based, any language, no prizes, just fun
11:30 PM rue_mohr: heh
11:30 PM rue_mohr: I think I'm ok