#robotics Logs

Jan 14 2018

12:18 AM rue_: its kinda funny how handy it can be to have an arduino plugged into a usb port somewhere
12:22 AM rue_: for testing code
12:22 AM rue_: 3.750Khz
12:22 AM rue_: huh
12:22 AM rue_: I wonder how accurate that is
12:22 AM rue_: ah, more readings say its 3.556Khz
12:22 AM rue_: which is better
12:22 AM rue_: ok, so, thats my 7.112Khz sample clock
12:28 AM rue_: arg, its amazing how many simple programs I'v not made for the mega328
12:29 AM rue_: no basic ADC program
01:15 AM * rue_ plays with adc to parallel
01:15 AM rue_: wee the lights!
01:35 AM rue_: OH HOW COOL IS THAT!
01:35 AM rue_: the adc can be set to auto trigger off a timer overflow!
01:35 AM rue_: sweeeeeet
02:43 AM rue_: aha! you have to clear the damned overflow flag every time!
02:45 AM rue_: ok thats the adc working like.... clockwork...
02:46 AM rue_: ok, next is a max59... 4....uh... yea
03:33 AM rue_: things you never thought
03:33 AM rue_: a 8 dot bar graph has 9 levels
04:07 AM rue_: cool, I made a vu display
10:23 AM anonnumberanon: rue_ we finished that 3 operations challenge remember?
10:23 AM anonnumberanon: Grep the logs for SWAP
10:24 AM Tom_L: there are 3 ways to solve it. figure out the other 2 now
10:24 AM anonnumberanon: Wait really?
10:24 AM Tom_L: oh hell i dunno, i was just gonna keep ya busy until he woke up :)
10:25 AM anonnumberanon: Lol
10:25 AM anonnumberanon: Nah man
10:25 AM anonnumberanon: Im like thinking of what im gonna di with Sunday right now
10:25 AM anonnumberanon: 1) am i late on anything
10:26 AM anonnumberanon: 2) do i want to get ahead on my work week
10:26 AM anonnumberanon: I guess no to both
10:27 AM anonnumberanon: Hows the mill?
10:28 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Mill_Assembly1.jpg
10:28 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Z_Axis_Limit1.jpg
10:29 AM Tom_L: that one may present a problem later
10:30 AM Tom_L: probably won't do much on it today
10:31 AM anonnumberanon: What am i looking at.
10:31 AM anonnumberanon: Oh this is your nre sewing machine.
10:31 AM anonnumberanon: Nice man.
10:35 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/Mill_Assembly2.jpg
10:35 AM Tom_L: you can sorta see the sherline in the back
10:35 AM Tom_L: i don't think i've _ever_ used it without one of those aluminum plates on it
12:21 PM edmoore: Tom_L: how do you find your sherline
12:23 PM Tom_L: lacking
12:23 PM Tom_L: but i'm used to the large commercial ones
12:24 PM Tom_L: if you're looking for a small mill, i'd look for a steel one. the sherline is aluminum
12:38 PM Tom_L: i've had mine a long time and made quite a few parts with it though
12:48 PM edmoore: thanks Tom_L
12:49 PM Tom_L: are you looking for one?
01:26 PM veverak: anonnumberanon: you wanted lidar?
01:26 PM veverak: https://www.robotshop.com/eu/en/benewake-tfmini-micro-lidar-module-12-m.html cheapest yet
02:30 PM rue_: hahahahahah
02:30 PM rue_: hahahaha oooh god
02:30 PM rue_: ok, if you have a global variable,
02:30 PM rue_: and one in main called the same thing
02:30 PM rue_: gcc dosn't warn ya
02:30 PM rue_: main uses its local
02:30 PM * rue_ stop chasing tail
02:33 PM Tom_L: really?
02:33 PM Tom_L: i suppose that could cause a conflict
02:33 PM Tom_L: drawing the sheetmetal belt cover today
02:34 PM rue_: your going to draw it? I didn't know you had the tools? custom die?
02:34 PM Tom_L: i'm gonna draw it so i can cut it accurately
02:34 PM rue_: ;)
02:34 PM Tom_L: i'm being lazy today
02:34 PM Tom_L: not nonproductive though
02:36 PM rue_: if you were selling that machine for $12000 do you think you would be making a descent amount/hr?
02:36 PM Tom_L: nearly done :)
02:36 PM Tom_L: yes
02:36 PM rue_: there ya go then
02:36 PM Tom_L: considering probably half the time is spent getting out and putting away stuff
02:36 PM rue_: and how long does it take to get a custom ordered CNC machine?
02:36 PM rue_: yea well..
02:36 PM Tom_L: not that damn long
02:36 PM rue_: 6 mo or so?
02:36 PM rue_: I'm talking custom
02:37 PM Tom_L: how long have i been at this?
02:37 PM Tom_L: i don't remember
02:37 PM rue_: not that long really
02:37 PM rue_: maybe over 2 mo?
02:37 PM rue_: (over the course of)
02:37 PM rue_: its been a winter project
02:45 PM rue_: hah, and that about it, fft on avr
02:46 PM rue_: sweeeet
02:56 PM veverak: anonnumberanon: https://www.seeedstudio.com/Seeedstudio-Grove-TF-Mini-LiDAR-p-2996.html
02:56 PM veverak: rue_: that's why globals are bad
02:59 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Belt_Guard.jpg
03:02 PM rue_: I suspect there shoudl have been a warning
03:02 PM rue_: Tom_L, will it unfold it for you?
03:02 PM rue_: got a sot welder?
03:04 PM Tom_L: no spot welder
03:04 PM Tom_L: i'm gonna weld the tabs on i think
03:04 PM Tom_L: it would unfold if i had used the sheetmetal tools but i didn't
03:11 PM rue_: https://youtu.be/td7jzhWz-B0
03:11 PM rue_: 2 weeks of work.
03:13 PM Tom_L: cool
03:13 PM Tom_L: i could build a cnc in 2 weeks :)
03:13 PM Tom_L: you know, if you put the paper away from the leds a bit it looks like a fireplace
03:22 PM rue_: yea, but its not like that
03:23 PM rue_: build in a coolant provision, chip puffer, and spindle light
03:23 PM Tom_L: yeah i need to
03:23 PM rue_: the mist coolant systems might be a mess alternative4
03:24 PM Tom_L: say, i should show you these lights...
03:24 PM Tom_L: you might want to get some
03:24 PM rue_: hmm, problem, I have a car sleeping on my lap
03:24 PM rue_: no, wait, its a cat
03:24 PM rue_: I got one of the mist coolant things
03:25 PM Tom_L: http://www.ikea.com/us/en/catalog/products/20315674/
03:25 PM Tom_L: i got one on my drill press and one on my lathe
03:25 PM rue_: ah yea
03:25 PM Tom_L: i may get one of those mist things off ebay for ~10 bux
03:25 PM Tom_L: those are cheap lights but work great
03:26 PM Tom_L: will work off 5v usb i'm told
03:26 PM Tom_L: i think the wart is 4v
03:27 PM Tom_L: https://www.ebay.com/itm/Mist-Coolant-Lubrication-Spray-System-For-8mm-Air-Pipe-CNC-Lathe-Mill-DrillATBD/202151085390?_trkparms=aid%3D555019%26algo%3DPL.BANDIT%26ao%3D1%26asc%3D20150817211623%26meid%3D5240d72312bb4f77aafb445d5033b2c7%26pid%3D100505%26rk%3D1%26rkt%3D1%26&_trksid=p2045573.c100505.m3226
03:27 PM Tom_L: something like that maybe
03:27 PM Tom_L: is that what you're talking about?
03:27 PM rue_: thats it
03:27 PM rue_: its waiting under my lathe
03:28 PM Tom_L: you should grab a couple of those lights, they work great for closeup work
03:28 PM rue_: https://www.ebay.ca/itm/USB-LED-Clamping-Clip-Laptop-Light-Lamp-for-Desktop-Notebook-PC-Tablet-Reading/162843556265
03:29 PM rue_: I have a good gooseneck like lamp at the soldering station
03:29 PM Tom_L: yeah, those don't come with the wart though
03:29 PM rue_: no, just usb
03:29 PM Tom_L: good to have the wart in the shop
03:30 PM Tom_L: good price though
03:31 PM Tom_L: does canada have ikea?
03:31 PM rue_: yes
03:31 PM rue_: and they dont give us anymore screws than you guys get
03:31 PM rue_: (always 1 short)
03:32 PM Tom_L: heh
03:33 PM veverak: lol
03:33 PM Tom_L: ok i printed the cover 1:1 so i can lay it on top of the pulleys to inspect
03:34 PM Tom_L: .040" tin should be plenty sturdy
04:00 PM rue_shop3: cool, was just measuring and checking the fft center freqs, they look prettymuch on where they should be
04:01 PM anonnumberanon: Whats that for?
04:01 PM rue_shop3: "been there, done that"
04:01 PM rue_shop3: :P
04:02 PM rue_shop3: tommorow I'll make a spaceship and check out the moon, same reason.
04:04 PM anonnumberanon: No reason? Got it.
04:05 PM anonnumberanon: Nice one verak one must just build a unit for this to rotate.
04:05 PM anonnumberanon: Trick is to not add a lot of volume.
04:05 PM anonnumberanon: I dint mean rotate i meant spin.
04:06 PM anonnumberanon: Other trick is to ha have connections alliw it to spin.
04:06 PM * rue_shop3 does a parity check on anonnumberanon
04:11 PM mrdata: odd
04:12 PM Tom_L: none
05:00 PM anonnumberanon: Nice one veverak scroll up i messed up ur name
05:01 PM anonnumberanon: mrdata im not odd screw you
05:02 PM mrdata: dont get mad; get even
05:02 PM mrdata: ;)
05:04 PM veverak: anonnumberanon: there are rottaing connection things
05:05 PM veverak: https://www.aliexpress.com/item/M-slipring-Mini-slip-ring-Dia-12-5mm-4-Channels-2A-MSM-12-04A-Can-rotate/32666047561.html?spm=2114.search0104.3.127.6EP6Df&ws_ab_test=searchweb0_0,searchweb201602_1_10152_10151_10065_10344_10068_10342_10343_10059_10340_10314_10341_10534_100031_10084_10604_10083_10103_10304_10307_10615_10302_10142,searchweb201603_25,ppcSwitch_7&algo_expid=1d1b9518-c0cd-48d6-8bb1-ccd7d75c6450-1
05:05 PM veverak: 7&algo_pvid=1d1b9518-c0cd-48d6-8bb1-ccd7d75c6450&transAbTest=ae803_4&priceBeautifyAB=0
05:05 PM veverak: I wonder how much the slip ring messes the UART
05:17 PM anonnumberanon: mrdata you're on fire tonight
05:18 PM mrdata: i'm watching a bunch of spacex landings, to apr 2016 https://www.youtube.com/watch?v=AllaFzIPaG4
05:23 PM codepython777: http://www.bbc.com/news/av/technology-42657383/ces-2018-omron-s-ping-pong-robot-keeps-ball-in-play - anyone wants to help me build this? :)
05:40 PM durrf2: i like mark rober's darts machine
05:40 PM durrf2: where he can set it to either always give bullseyes or always miss the board completely
09:46 PM Boobie: https://www.youtube.com/watch?v=W0khUGNfCIE
10:54 PM rue_: click, ok
10:55 PM rue_: mrdata, would you beleive I did it, I did the fft in pure 8 bit and it works?
11:06 PM rue_: https://www.youtube.com/watch?v=td7jzhWz-B0
11:58 PM mrdata: rue_, wow!
11:59 PM rue_: keeping the numbers in range was a challange