#robotics Logs
May 29 2017
#robotics Calendar
12:16 AM rue_house: hah, done, works
12:19 AM rue_house: the problems I solved when I put the library in the project dir sovled the underlying issues
12:19 AM rue_house: anniepoo, how are you with makefiles?
12:20 AM rue_house: root@blackie2:/files/programming/c/stm32/blink2# ls -l
12:20 AM rue_house: total 8
12:20 AM rue_house: -rw-r--r-- 1 1005 1005 2179 May 28 21:32 main.c
12:20 AM rue_house: -rw-r--r-- 1 1005 1005 3368 May 28 21:49 Makefile
12:20 AM rue_house: hah! THATS the win I was looking for
12:20 AM rue_house: matter a fact...
12:22 AM rue_house: -rw-r--r-- 1 1005 1005 2179 May 28 21:32 main.c
12:22 AM rue_house: lrwxrwxrwx 1 1005 1005 11 May 28 2017 Makefile -> ../Makefile
12:22 AM rue_house: THATS better
12:22 AM rue_house: all the projects can link back to the same makefile for the stm32 projects
12:22 AM rue_house: all I have to do it write main.c
12:26 AM anniepoo: I'm ok
12:26 AM rue_house: wanna playw ith a cleanup project?
12:26 AM anniepoo: sure
12:26 AM anniepoo: though I might not get there for about 48 hours
12:26 AM orlock: anniepoo: How did the print end up going? did you try to measure the brim?
12:27 AM anniepoo: hang on, I'll walk in next room and check it
12:27 AM rue_house: http://paste.debian.net/949663/
12:28 AM annieonthe3dprin: the print I'm running, dog collar part, is running just fine on 60C and raft, kapton
12:28 AM annieonthe3dprin: what do you want me to measure on brim?
12:29 AM orlock: the thickness
12:29 AM annieonthe3dprin: I have a little robot figure I've printed a couple of
12:29 AM annieonthe3dprin: ok, hang on, gotta get calipers
12:29 AM orlock: Does the dog collar part have a brim as well, or just raft?
12:29 AM rue_house: your about to walk into a world where nothing makes sense, where the exact same print parameters just stop working for no known reason
12:30 AM orlock: i need to wire my printer back up, its been apart for months :-(
12:30 AM annieonthe3dprin: brim at 60 is 0.45mm, 0.020 inch
12:31 AM annieonthe3dprin: brim at 70 is 0.32mm
12:31 AM orlock: annieonthe3dprin: ahh, but you had your first layer height at .2?
12:31 AM orlock: annieonthe3dprin: you said 203 microns i think?
12:31 AM annieonthe3dprin: brim from a part printed before the trouble is 0.55mm
12:32 AM annieonthe3dprin: 0.3
12:32 AM annieonthe3dprin: initial layer thickness
12:32 AM annieonthe3dprin: haven't dinked with that
12:33 AM orlock: ok so .32mm with first layer height of .3 is pretty right then
12:33 AM annieonthe3dprin: my bed's adjusted to .203
12:34 AM annieonthe3dprin: what do you mean 'tight'? what's tight?
12:34 AM orlock: right
12:34 AM orlock: not tight
12:34 AM orlock: :)
12:34 AM orlock: annieonthe3dprin: when you say adjusted to .203
12:35 AM orlock: you measure that with a feeler?
12:35 AM annieonthe3dprin: yes
12:35 AM orlock: so theres a 203 micron gap between the bed surface and the nozzle?
12:35 AM annieonthe3dprin: yes
12:35 AM orlock: What's Z at when you measure that?
12:35 AM annieonthe3dprin: 0
12:35 AM annieonthe3dprin: I run 'auto zero' before adjusting
12:36 AM orlock: Ahh - i have no experience with that
12:36 AM annieonthe3dprin: and then turn off steppers. manually move head over corners of bed and check
12:36 AM orlock: I would have set Z to .2 in that case
12:36 AM annieonthe3dprin: my bed dips just a smidge in middle
12:36 AM annieonthe3dprin: z?
12:37 AM rue_house: glass?
12:37 AM annieonthe3dprin: you mean initial layer height?
12:37 AM annieonthe3dprin: metal
12:37 AM rue_house: use a peice of mirror, its flater
12:37 AM rue_house: mirror has to be damn flat, or you get a circus
12:37 AM annieonthe3dprin: this was a kit
12:37 AM rue_house: ^^
12:37 AM annieonthe3dprin: bed's just a piece of al with a heater bonded to back
12:38 AM rue_house: mmm
12:38 AM annieonthe3dprin: needed production quick.
12:38 AM orlock: annieonthe3dprin: Z. - So you have your head .2mm off the print surface, but the printer thinks its right on the surface
12:38 AM annieonthe3dprin: it's saved our patooties. right call to do it
12:38 AM annieonthe3dprin: hmm..... hang on, let me look at settings
12:39 AM annieonthe3dprin: I now see what you're driving at
12:39 AM orlock: annieonthe3dprin: I'd be interested to see how it prints when you , for example, measure your head as being .2mm off the print bed
12:39 AM orlock: and then tell the printer that Z is .2mm above the print bed
12:39 AM orlock: Otherwise, it thinks it needs to go to .2
12:39 AM orlock: and moves up .2mm
12:39 AM orlock: now it's .4mm off the surface
12:40 AM annieonthe3dprin: cura has an entry 'initial layer thickness'
12:40 AM annieonthe3dprin: set to 0.3mm
12:40 AM orlock: yup, thats to help with surface ireggularities and adhesion
12:40 AM annieonthe3dprin: and I followed man. setup recommendation to set to 150-250 microns above bed after zeroing extruder pos
12:40 AM orlock: so it will rause up .3mm for the first layer
12:41 AM orlock: Ok, well - just from my experience, your brim in those pictures was either underextruding
12:41 AM orlock: or the nozzle was too high
12:42 AM annieonthe3dprin: ok, I'll fiddle with this setting
12:42 AM orlock: Basically, not enough plastic for the gap between the nozzle and the bed
12:42 AM rue_house: I HAVE TO STOP TRYING TO BACKGROUND MY VI SESSIONS
12:43 AM orlock: so you can either up the extrusion rate, which should be a setting for the first layer specifically
12:43 AM orlock: or lower Z
12:43 AM orlock: Personally, i'd lower Z, and measure your brims
12:43 AM orlock: until the brim measures when your first layer height is
12:46 AM z64555: z mentioned :P
12:47 AM orlock: but of course - all just my own opinion
12:47 AM annieonthe3dprin: brim is .40 - .49. that's consistent with your .3 + 1.5
12:48 AM annieonthe3dprin: and brims on old parts about the same
12:50 AM annieonthe3dprin: hhmmm... and fwiw I have the movement speed set to half the value in manual
01:04 AM rue_house: ok I got a serial hello world to compile, but I dont have anything on the serial port, so I'll finish that tommorow
01:07 AM anniepoo: 8cD
01:09 AM anniepoo: that's cool
01:09 AM anniepoo: I'll look at your makefile later
01:09 AM anniepoo: it's end of night for me, next 48 hours are busy
01:14 AM annieonthe3dprin: So, using a raft and 60C bed, I successfully printed the part that initially caused this concern
03:54 AM Jak_o_Shadows: rue_house, I think you accounted for the time diffeerence, but not day of week difference.
03:55 AM Jak_o_Shadows: Anyway, rue_house, no further. Attempted to finish off another project over the weekend so I have more desk space.
03:55 AM Jak_o_Shadows: Next step is reading pulse in
03:55 AM Jak_o_Shadows: ./figuring out how to make it logic level comatible
03:58 AM rue_bed: Jak_o_Shadows, I got it
03:59 AM rue_bed: just makefile and main.c
04:01 AM Jak_o_Shadows: eyyy!
04:01 AM Jak_o_Shadows: nice
09:16 AM rue_house: Jak_o_Shadows, and I got the library out of the project dir
09:16 AM rue_house: links and all
09:46 AM rue_house: Jak_o_Shadows, I'm working on serial io now
10:53 AM Tom_L: rue_house, is this the little $1 arm from china?
06:02 PM zhanx: Tom_L: most likely
07:33 PM jandor: hi
07:34 PM jandor: :(
09:58 PM rue_bed: no, I'm playing with the stm32
09:58 PM rue_bed: I need to go find the serial port and see if its talking
10:02 PM Tom_L: mmm i've got one of those, which one is it?
10:02 PM Tom_L: this is the STM32F4
11:02 PM rue_house: mione are stm32F108 iirc
11:04 PM rue_shop3: no
11:04 PM rue_shop3: stm32F103C8
11:26 PM rue_house: A9 is TX
11:47 PM rue_house: it seems to me, that timer1 alone, of the stm32 could, given 4 4017 chips, run 40 servos