#garfield Logs

Jun 02 2021

09:09 AM rue_mohr: morning
09:34 AM rue_mohr: polprog, my little twitter thread on ESR seems to be popular :)
09:36 AM polprog: yep
09:36 AM polprog: good job!
09:36 AM polprog: got classes now, java programming exam. Just shoot me
09:36 AM rue_mohr: I'm kinda wondering if anyone will be more interested in that in-circuit tester
09:36 AM rue_mohr: most people were too skeptical
12:13 PM polprog: ok
12:13 PM polprog: im officially free until monday
02:56 PM polprog: yay. I set up PXE booting and PXELINUX
02:56 PM polprog: now I can boot my dos utility floppies over the network
02:56 PM polprog: this sis uper cool
02:56 PM polprog: is super cool*
02:56 PM polprog: the best part is that my dhcpd and tftpd is completely standalone, not a system service
02:56 PM polprog: so you can run it when you want
02:57 PM polprog: its all local directory
02:57 PM polprog: i can give you the tar.gz if you want
02:57 PM polprog: just unpack, install the deps (dhcpd, tftpd) and you are good to go
04:41 PM polprog: damnit
04:41 PM polprog: nothing that runs flashrom boots on that wyse
06:26 PM polprog: finally
06:27 PM polprog: booted one of the utility DOSes
06:27 PM polprog: yours
06:27 PM polprog: with flashrom exe copied in it
06:27 PM polprog: inserted a blank CF card, formatted it and i was able to read the bios to a file on the CF, then read the file from the CF on my laptop
06:27 PM polprog: nice
06:27 PM polprog: goodnight :)
09:37 PM rue_mohr: gnight polprog
09:37 PM rue_mohr: well
09:37 PM rue_mohr: last year I put motor controllers in the big tilt and pan mirror
09:37 PM rue_mohr: I needed to do up a joystick to test-control them
09:38 PM rue_mohr: seem I found the joystick code
09:38 PM rue_mohr: gonna try it out in a bit
09:38 PM Tom_L: servos?
09:38 PM rue_mohr: diy dc motor servos
09:38 PM Tom_L: fit for a cnc?
09:38 PM rue_mohr: hah no
09:39 PM Tom_L: :/
09:39 PM Tom_L: seems everybody is slowly making the move
09:39 PM rue_mohr: yea, we wont know whats going to land where for a few months yet
09:40 PM rue_mohr: there may be a sudden failure on one side
09:40 PM Tom_L: got my extra mill holders yesterday
09:40 PM Tom_L: should have plenty to do just about any setup now
09:40 PM rue_mohr: table or spindle?
09:41 PM Tom_L: spindle
09:42 PM Tom_L: got extra 3/8, 1/4 and 3/16
09:43 PM rue_mohr: k
09:43 PM rue_mohr: ER#?
09:43 PM rue_mohr: or sherline
09:43 PM Tom_L: no the really fancy sherline ones :)
09:43 PM Tom_L: haha
09:43 PM rue_mohr: k
09:44 PM Tom_L: i pretty well committed to that
09:44 PM Tom_L: so i'll stick with it
09:44 PM rue_mohr: might as well
09:44 PM Tom_L: the spindle itself seems to handle everything i put at it just fine
09:46 PM rue_mohr: esp now
09:47 PM Tom_L: yeah, i'm pretty happy with it
09:47 PM Tom_L: i should go re'tram the head again now that it's all aged a bit
09:49 PM rue_mohr: how close do you think it is now?
09:51 PM Tom_L: i know it's not perfect because when i use a flycutter the back edge cleans up a little tiny bit after the cut
09:51 PM rue_mohr: I told myself I have to get a controller set up for the mirror so I can testit
09:51 PM Tom_L: but it's pretty close
09:51 PM rue_mohr: how hard are small adjustments?
09:52 PM Tom_L: i dunno if i have the proper tools to get it much closer
09:52 PM Tom_L: if i overtighten one of the big screws it changes
09:52 PM Tom_L: that's where we're at with it
09:52 PM rue_mohr: so maybe do that to get it right
09:53 PM Tom_L: or slide a shim over .1" or so
09:53 PM Tom_L: the overhang tube i welded up, the base warmped when i welded it because i was stupid and welded a solid bead on that first one not thinking
09:53 PM Tom_L: the other end of it didn't warp
09:54 PM Tom_L: i hammered it flat but i'm sure it's not laser flat :)
09:54 PM Tom_L: and i'm not about to build another one to replace it
09:55 PM Tom_L: i need a better way to measure the actual spindle location in all 4 quadrants
09:57 PM Tom_L: the dial indicator works ok
09:57 PM rue_shop5: the shop jukebox overheated
09:57 PM rue_shop5: sounds like a harddrive isn't working
09:58 PM Tom_L: jamin too hard?
09:58 PM rue_shop5: it was raid, if I set it up right
09:58 PM rue_shop5: I think it needed more fans?
09:59 PM Tom_L: https://www.youtube.com/watch?v=GtFTRyS__Yc
09:59 PM Tom_L: that's really the best way i have to measure it
09:59 PM Tom_L: but that doesn't measure Z travel perp to the table
09:59 PM Tom_L: i don't think anyway
10:06 PM rue_mohr: did you do a cube yet?
10:09 PM Tom_L: probably
10:15 PM rue_mohr: hmm
10:15 PM rue_mohr: stirrling engine?
10:47 PM rue_shop5: ok, programming avr
10:48 PM rue_shop5: ok, is the clock rate right then...
11:14 PM rue_shop5: ok, well stumbling block
11:14 PM rue_shop5: the transmitter runs at 1200 baud
11:14 PM rue_shop5: the reciever needs 9600
11:15 PM rue_shop5: this is just a test, maybe I'll just arduino it
11:16 PM rue_shop5: I suppose I could also just bring down the controller baud rate, but something else doesn't add up, their both tiny13
11:17 PM rue_shop5: if I can get to 9600 on one end, I should be able to on the other
11:17 PM Tom_L: same parity & bits?
11:17 PM rue_shop5: yea
11:17 PM rue_shop5: it looks like the transmitter code tops out at 1200 is all
11:18 PM rue_shop5: void bitDelay(void) {
11:18 PM rue_shop5: uint16_t i;
11:18 PM rue_shop5:
11:18 PM rue_shop5: for( i = 1468; i != 0; i--) { // 1474 for 1200 | 737 for 2400 | 369 for 4800 |184 for 9600
11:18 PM rue_shop5: NOP();
11:18 PM rue_shop5: }
11:18 PM rue_shop5:
11:18 PM rue_shop5:
11:18 PM rue_shop5: }
11:18 PM rue_shop5: or not
11:18 PM rue_shop5: I'll play tommorow
11:19 PM rue_shop5: but ok, I got a bit more progress
11:19 PM rue_shop5: set up a board and a joystick
11:19 PM Tom_L: i should stop watching yt and go sleep
11:19 PM rue_shop5: I opened up the mirror control box and nothing is wired ;)
11:20 PM rue_shop5: addictive isn't it?
11:20 PM rue_shop5: I still have to fix the power supply for the hall lgihts toooo
11:25 PM Tom_L: i like watching things i've never seen done
11:26 PM Tom_L: https://www.youtube.com/watch?v=YKRB0-upTw0
11:26 PM Tom_L: flyback got me started by watching that one
11:41 PM Tom_L: i have discovered one thing though
11:41 PM Tom_L: there is no end to YT