#linuxcnc Logs

Feb 12 2020

01:56 AM Loetmichel: mornin'
02:04 AM Deejay: moin
02:05 AM Loetmichel: hmpf that #11 blade did more damage than i initial thought... about a fourth of the middle finger tip is numb where the blade stuck in the bone. must have hit a nerve. also it starts to hurt because of inflammation. just a bit though ;)
02:35 AM t4nk_freenode: _unreal_, 'yeah I have a hammer drill' ... 19,95 from a dollar store :)
02:35 AM t4nk_freenode: @first I thought the drill was useless hehe
02:37 AM t4nk_freenode: it even came with 3 powerrrrful concrete drills in da box ;)
02:39 AM Loetmichel: t4nk_freenode: those cheap hammer drills are surprisingly useful
02:40 AM t4nk_freenode: 19.95 is 'crazy cheap', but yeh it probably will work fairly well
02:41 AM t4nk_freenode: I had some hopes of using the drill for some makeshift lathe, but it's got a substancial wobble
02:43 AM Loetmichel: hammer drills are not meant to do precision work
02:43 AM Loetmichel: they hace intentional play in the chuck
02:43 AM t4nk_freenode: I noticed that, ehm.. perpendicular, say
02:44 AM t4nk_freenode: or lengthwise
02:45 AM t4nk_freenode: need to shower and set off, later!
02:52 AM kwork_ is now known as kwork
03:59 AM * Loetmichel is stating: copper foil cuts are ten times worse than paper cuts... sometimes i whish the german OSHA ("BG") would do more housecalls... they would have "fun" here ;)
04:12 AM XXCoder: lol
05:01 AM Tom_L: morning
05:04 AM Loetmichel: *HA* 3d-printers are here... nice... now assemble them, make room in the rack and have 4 Ender3 with webcams on the repetier server;)
05:45 AM jthornton: morning
05:46 AM XXCoder: heys
05:55 AM X704 is now known as tiwake
06:51 AM XXCoder: jthornton: bought a better goggles for laser
06:52 AM XXCoder: one more specific to 450nm and stronger block
06:52 AM veegee: Ok I was anti click type torque wrench before but that's because I had the cheap ones
06:52 AM XXCoder: https://www.amazon.com/gp/product/B07DCRR8NG/
06:52 AM veegee: I just bought a bunch of different types on amazon to sample and the CDI click wrenches are good
06:52 AM XXCoder: heh yeah cheap clickies dont bother
06:52 AM veegee: Actually feel nicer than the precision instruments split beam which has the build quality of a chinese import
06:52 AM XXCoder: aaaand goggles I bought is out of stock lol
06:52 AM XXCoder: lucky me whew
06:53 AM jthornton: you must have bought the last pair
07:24 AM Tom_L: snow today
07:24 AM unterhaus: photobucket says my account is reaching its bandwidth limit. Which is funny, because it would be the blurry pics they are serving up now for free accounts
07:25 AM elmo40: >_<
07:25 AM elmo40: gotta pay to play harder?
07:25 AM unterhaus: I haven't uploaded anything there since well before when they killed all external links
07:26 AM unterhaus: flickr has more of a complaint, but so far they have only been begging
07:27 AM elmo40: oh wow. expensive. $6/mo for 25GB?
07:27 AM elmo40: i'd rather pay into netflix...
07:27 AM unterhaus: too bad google's interface for pics isn't as nice as flickrs
07:30 AM unterhaus: the photobucket experience is just not worth it, and the old owners ruined the brand
07:33 AM elmo40: wasn't there a patent issue? something about offering photos for sale via web interface... really vague but closed a lot of sites down. pictage for example didn't want to pay royalties.
07:35 AM unterhaus: flickr isn't horrible at $60 a year, but I'm nowhere near the limit on my account
07:36 AM unterhaus: and google does better/gb
07:53 AM jthornton: I deleted all my photobucket photos long time ago when they went south
07:55 AM elmo40: Florida?
08:56 AM Loetmichel: hmm, just heard "headphones" from john bryant in the radio... instant memory of Glados singing. or is that just my imaginiation?
09:34 AM mrec: hi, does anyone know inventables carvey? I wonder if I can cut some metal sheets with it
10:31 AM Rab: mrec, http://carvey-instructions.inventables.com/materials/
10:32 AM Rab: "Safe limits for Aluminum are as follows: 5”/min feed rate, 2.5”/min plunge rate, 0.003”/pass with minimum 0.0625” milling bit."
10:33 AM Rab: .003" DOC is pretty miserable, almost a "no". But that seems to be the answer.
10:35 AM Rab: Little 300W engraving spindle: http://carvey-instructions.inventables.com/spindle/spindle.jpg
10:44 AM mrec: that's what they have in the local fablab
10:44 AM mrec: I'd like to mill some EMI shielding
10:44 AM Rab: Sheet aluminum?
10:45 AM mrec: still checking the material..
10:46 AM Rab: You could use copper clad PCB material. It might be easier to work with than metal sheet.
10:49 AM mrec: I'll go there next wednesday for doing some material tests
10:49 AM mrec: (and testing the machine)
10:50 AM mrec: I went there today and they gave us some introduction which machines they have.
10:50 AM Rab: Aluminum sheet would need to be held as flat as possible. Maybe using double-sided tape or spray adhesive to mount it to a rigid spoil board.
10:50 AM mrec: aluminum I thought about screwing it down several times
10:51 AM mrec: milling some parts and leaving some bridges so they won't float around
10:51 AM Rab: If there is any variance in height, given that shallow depth of cut, you risk digging in on high spots and ruining the cutter and/or damaging the machine.
10:52 AM Rab: That could work, depending on the thickness/stiffness of the sheet.
10:52 AM mrec: do you think 0.2mm sheets can be that dangerous?
10:54 AM Rab: That's very thin and flexible. An end mill will pull upwards on it, possibly binding in the cut.
10:54 AM Rab: You might be able to use an engraving cutter.
10:55 AM mrec: thanks for that hint
10:56 AM Rab: You could certainly use an engraving cutter to score it partway through, and fold a complete shield out of one sheet (if it fits in the machine).
11:02 AM CaptHindsight: I have had one of those "spindles" sitting around for a while, I was wondering what it was good for :)
11:08 AM Rab: https://www.ebay.com/itm/333415060966
11:08 AM Rab: Material: aluminum alloy
11:08 AM Rab: Color: silver
11:10 AM Rab: For facing cheese, or what?
11:29 AM CaptHindsight: sounds like a kickstarter
11:30 AM CaptHindsight: we found a way to make cutters less expensive
11:31 AM CaptHindsight: like that 5 axis mill made from aluminum with hard anodized ways
11:34 AM struf: nice
12:21 PM MrHindsight is now known as CaptHindsight
12:43 PM miss0r2: goodevening
12:50 PM Jymmm: miss0r2: hi, found your cable?
12:50 PM miss0r2: yeah. I phoned my local mecanic. :)
12:51 PM miss0r2: They just replaced a handbrake cable on a volvo. The back part that are two seprate wires, where one had locked up in the sleeve. The other one is in perfect condition. So it was a freebie
12:52 PM miss0r2: I just cut off some of that extra stuff right now (mounts and rubber sleeves ect). I am going to go see what I need to do to fit right now actualy
01:03 PM Jymmm: miss0r2: ah very cool =)
01:10 PM miss0r2: Jymmm: Sadly it doesn't fit for sh*t :)
01:11 PM miss0r2: I think I will reuse the old liner, as it looks like I might be able to fit the "new" wire into it, and see where that takes me
01:11 PM miss0r2: but at the moment it is raining and blowing outside like the end is comming.. so I'll look at it some other time
01:33 PM Jymmm: miss0r2: boo
01:33 PM unterhaus: my new level has a calibration sticker on it from 2017
01:34 PM unterhaus: new to me level, the box looks like it is 50 years old
01:39 PM miss0r2: unterhaus: Nice. I like those types of spirit levels
01:39 PM miss0r2: But I admit I just resently aquired a digital one, with a bluetooth connection to my phone. Best investment ever
01:39 PM miss0r2: well.. a good investment anyway
01:40 PM unterhaus: what brand is your level?
01:40 PM miss0r2: The new one?
01:40 PM unterhaus: yes
01:40 PM miss0r2: give me a sec :)
01:40 PM miss0r2: its a digi-pas
01:41 PM unterhaus: I'm not sure I trust the calibration, one of the adjustment screws is way out. Doesn't appear to be any reason for that
01:41 PM miss0r2: DWL-1500XY
01:41 PM miss0r2: Then calibrate it yourself
01:41 PM unterhaus: that is my plan, I have a much better level than this
01:42 PM unterhaus: or I can go borrow my friend's precision level
01:42 PM miss0r2: hehe. Well this new one I aquired saves me TONS of work :)
01:42 PM miss0r2: what do you need that for?
01:42 PM unterhaus: which one did you get? The pocket level?
01:43 PM unterhaus: I need to level the plate I'm going to mount an encoder on
01:43 PM miss0r2: its chinesium, bought through a local reseller: https://www.youtube.com/watch?v=3Me8C0YhnAs
01:43 PM miss0r2: you know, even though its more work, you can do that just with your own level
01:44 PM unterhaus: true, but I'm pretty lazy
01:44 PM miss0r2: :]
01:45 PM miss0r2: I know the feeling
01:45 PM unterhaus: I prefer brute force
01:45 PM miss0r2: Usualy I don't care too much about the calibration of my spirit level
01:46 PM unterhaus: of course, this one probably is a lot easier than the previous one which has a very flat spirit tube
01:46 PM miss0r2: unless I have to do ultra precision machines. With your garden vareity lathes & mills(CNC and otherwise) it is quite good enough with a regular level, this is mostly to make sure the coolants run the right way :)
01:46 PM miss0r2: then I use the spirit level to traverse the axis and see if theres any twists/bends - but it does not need to be calibrated for that
01:46 PM unterhaus: I bought my longer level because leveling machine with my friend's level is nearly impossible
01:46 PM unterhaus: too sensitive
01:47 PM miss0r2: too sensitive? :S What is the resolution on that thing?
01:47 PM unterhaus: I don't remember. My starrett is about 10x less though
01:48 PM miss0r2: either your starrett is slobby for your friends is insane
01:48 PM unterhaus: When I worked for my friend I would usually go borrow the machinist's 6 in starrett
01:48 PM unterhaus: my friends is definitely insane
01:49 PM unterhaus: but it's only a Bison, I think
01:49 PM miss0r2: The "regular" spirit level I use is 0.02mm over 1 meter per division
01:49 PM miss0r2: you don't want to install kitchen shelfes with that thing - that would drive you insane :) but it is quite good for machine setups
01:53 PM unterhaus: I'm pretty sure I have a 98-12 .005" over a foot
01:54 PM miss0r2: oh.. in that case its just impresise :)
01:54 PM unterhaus: I found one like my friends that has .0005" over 10"
01:55 PM miss0r2: The one I have is 0.0002" over 1ft per division
01:56 PM miss0r2: Which, around here anyway, is considered the standard resolution for machine setup
01:57 PM miss0r2: It looks a little like this: https://www.lav-det-selv.dk/portals/0/activeForums_attach/Pr%C3%A6cisions_vaterpas.jpg?w=600&h=400&mode=max
01:57 PM unterhaus: you haven't seen my lathe :)
01:57 PM miss0r2: true :)
01:58 PM unterhaus: I intentionally got one that wasn't as precise
01:58 PM miss0r2: hah
01:59 PM miss0r2: nice.. I just found a photo of my exact level: https://media.karousell.com/media/photos/products/2019/10/07/riken_keisokuki_precision_flat_level_150_x_002_1570426413_d00c37410_progressive
01:59 PM miss0r2: (not my photo)
02:00 PM miss0r2: the hinges in my box is not messed up, though :D
02:00 PM unterhaus: that one is beat
02:00 PM miss0r2: yeah, I take care of my equipment :)
02:00 PM unterhaus: sort of sad to see such a nice tool in that condition
02:01 PM unterhaus: that's exactly what my friend's level looks like,, but I'm sure the asahi is a bit better
02:02 PM miss0r2: I have no idea. I bought it used from an old machinist. I've just been taking care of it since. and I have no other equipment by that brand, so I don't have much else to to determin the brand quality from. But I like the level
02:03 PM miss0r2: meh. I have to run. See you around
02:03 PM unterhaus: I feel like making an extremely accurate spirit level is not something that one picks up easily
02:03 PM unterhaus: bye
02:08 PM Rab: Wonder how well this thing performs for the price: https://www.ebay.com/itm/332976932617
02:09 PM Rab: I have a light (700lb) mill, 50mm seems like the extent of reasonable ambition.
02:10 PM unterhaus: your mill is mt2?
02:10 PM Rab: It is.
02:11 PM Rab: But I would need to make an M10 drawbar.
02:11 PM unterhaus: too bad you don't live closer :)
02:11 PM Rab: Closer to where?
02:11 PM unterhaus: pennsylvania
02:11 PM unterhaus: where my collection of mt2 tooling that I dont' need
02:11 PM Rab: unterhaus, yeah, that'd be a drive.
02:12 PM unterhaus: I think a lot of the chinese indexable tooling is pretty good
02:12 PM unterhaus: not sure about that specific one
02:13 PM unterhaus: anything they don't make specifically for export is okay
02:14 PM gregcnc: it's all for export?
02:14 PM unterhaus: I think a lot of the tooling is interleved with their own production needs. If it's going to the factory next door, it's made pretty well
02:15 PM Rab: I assume at least smaller shops dogfood that stuff.
02:15 PM gregcnc: i doubt that, exports pay more
02:15 PM unterhaus: I went to IMTS a couple of years ago and the Chinese machine tool industry is pretty impressive
02:16 PM unterhaus: pretty sure the farther the customer is from a Chinese factory, the worse the quality control. That's why everyone has factory reps
02:17 PM gregcnc: they have reps because once the product leaves china it's yours
02:17 PM unterhaus: all the Chinese machine tools at IMTS had "no pictures" signs. And their engineers were out taking pictures of everyone else's products
02:18 PM unterhaus: yes, and if you don't have one you might get a container full of junk
02:18 PM gregcnc: the stuff that doesn't meet primary customers spec, get pushed out the back door, not scrapped
02:21 PM unterhaus: back to the original subject, 50mm on a 700 pound mill might be a bit much, have to be careful that the inserts will work with light DoC
02:21 PM unterhaus: a lot of inserts are made for heavy cuts
02:21 PM unterhaus: I might go with something smaller
02:22 PM unterhaus: although if you are cutting aluminum, I think those inserts work at low DoC
02:22 PM unterhaus: best to check
02:22 PM Rab: Yeah, finish cuts in Al.
02:23 PM gregcnc: you'll want aluminum geometry
02:23 PM Rab: I couldn't find a smaller face mill in MT2, I guess the alternative would be a fly cutter.
02:23 PM unterhaus: he posted some aluminum inserts earlier
02:23 PM unterhaus: aren't there face mills that go on an arbor, so two pieces?
02:24 PM Rab: That one appears to be arbored.
02:24 PM Rab: Other listings have the business end by itself, for $10 or so.
02:24 PM gregcnc: I use a 40mm in my arboga mill drill. aluminum is fine. steel with aluminum inserts tread lighly, steel inserts forget it
02:26 PM unterhaus: Rab, sorry, didn't look very hard at it, obviously. That is very cheap, hard to say
02:26 PM Rab: gregcnc, like this one? https://www.arbogamachinery.com/en/products1/drilling-machines/a-2508-u/
02:26 PM unterhaus: I would probably buy it and see how it works, but those don't appear to be aluminum inserts
02:27 PM Rab: unterhaus, thanks for pointing that out. There are a bunch of variants on eBay, I'll look at the others. (And separate insert packs.)
02:27 PM unterhaus: I wish I had started doing my homework on inserts before I bought $300 worth that don't work on the materials I usually cut
02:27 PM gregcnc: yes, but much older http://www.lathes.co.uk/arboga/index.html
02:29 PM Rab: gregcnc, hot, that pedestal mount is quite a compact design.
02:30 PM gregcnc: heh, found a listing for it from when i bought it https://www.tractorbynet.com/forums/private-party-ads-archive/181393-arboga-em825-mill-drill.html
02:31 PM Rab: Mine's slightly newer, same head movement: http://www.lathes.co.uk/clausing%20vertical/index.html
02:32 PM unterhaus: I keep thinking about getting a mill drill. Sometimes you don't need 5000lbs of cnc
02:32 PM gregcnc: I wanted an 8520, but areound here they are pretty expensive
02:35 PM Rab: It would probably sell for $2,500 here with vise and rotary table (absurd price, IMO). I got very lucky at a university auction.
02:38 PM unterhaus: I would really like one of the smaller Deckels, but those are usually crazy money
02:38 PM Rab: Right before the auction there was a Delta Rockwell 21-100 on craigslist for a couple grand, I really wanted that one but it disappeared instantly. Very similar size and design to the 8520.
02:40 PM Rab: People pay a premium for the smaller vintage machines because they fit right into a home shop with e.g. low ceilings, my constraint.
02:44 PM gregcnc: yeah
02:44 PM gregcnc: not terrible to move either
02:45 PM Rab: Yeah, I used a light pickup but in hindsight I could have fit the major pieces in the back of my Volvo wagon.
02:53 PM unterhaus: I have been to lazy to install an irc client, so I have to solve the recapchas
02:54 PM unterhaus: google doesn't know the difference between a bicycle and a tractor, I found out
02:54 PM unterhaus: should have taken a screen cap
02:54 PM Tom_L: hexchat is a good one
03:01 PM unterhaus: that is the one everyone seems to recommend
03:02 PM XXCoder: its great
03:02 PM Tom_L: i used mirc for years but have had issues with it
03:02 PM Tom_L: security leaks
03:05 PM unterhaus: now I can talk to myself
03:06 PM Tom_L: what do you mean?
03:06 PM unterhaus: I'm Eric
03:06 PM Tom_L: right click on the name and pick what you want to do
03:13 PM unterhaus: how do you log in using hexchat
03:13 PM XXCoder: i use on connect commands heh
03:13 PM XXCoder: its in server settings
03:26 PM unterhaus_: huh
03:26 PM unterhaus_: 4th time seems to have worked
03:46 PM unterhaus_: at least I can see the bubble when I put my 12" level on the lathe
03:46 PM unterhaus_: I want to move it though, not looking forward to that
03:50 PM Deejay: gn8
05:04 PM _unreal_: ve7it, you live?
05:04 PM _unreal_: got a question about the servo boards
05:04 PM _unreal_: just got my SMD parts in FINALLY
05:05 PM ve7it: yup
05:06 PM _unreal_: ok in the servo pcb
05:06 PM _unreal_: there is a resistor r9
05:06 PM _unreal_: 3k
05:06 PM _unreal_: I do not see a pad for it on the milled PCB
05:07 PM _unreal_: but the eagle pcb shows the pad
05:07 PM _unreal_: I'm just trying to ensure I'm not doing something stupid
05:07 PM _unreal_: or over looking something
05:08 PM _unreal_: infact the trace layout is a hair different
05:08 PM ve7it: looking
05:09 PM _unreal_: I can cut the trace and put the resistor. but I dont know if there is a version difference
05:09 PM _unreal_: and that resistor is else ware
05:10 PM ve7it: where is it on the schematic
05:10 PM _unreal_: its directly under the opamp
05:11 PM _unreal_: pin 4 I believe
05:11 PM jthornton: got a set of forks today in trade for some plasma work...
05:11 PM _unreal_: forks?
05:11 PM jthornton: from a forklift
05:11 PM _unreal_: ahhh.....
05:11 PM _unreal_: ya never would have guessed that
05:12 PM jthornton: going to make an adapter for my backhoe bucket
05:12 PM _unreal_: I didnt know if you ment silver, pitch fork, etc...
05:13 PM jthornton: yea, could mean a lot of things I guess, like a friend of my buddy could not decide which fork to take and thus hit a tree on his motorcycle
05:13 PM Tom_L: you gonna start doing woodworking for hire now?
05:13 PM _unreal_: middle is never the best choice
05:13 PM Tom_L: gettin all this new equipment...
05:13 PM jthornton: no way lol
05:14 PM jthornton: just tired of the crappy stuff I've been using for years
05:14 PM Tom_L: i can relate to that
05:15 PM jthornton: table I have now is a sheetmetal sears jobby that was given to me
05:17 PM ve7it: _unreal_, I see that.. its in the eagle file but not the png schematic
05:18 PM perry_j1987: hows it going guys
05:20 PM _unreal_: cool.... so Ijust found an error
05:21 PM ve7it: _unreal_, I would cut the trace and add it in, as the eagle schematic is more current than the png date. It doesnt look critical, I dont remember why it was added 13 years ago!
05:24 PM _unreal_: ok
05:24 PM ve7it: There were, I think, 3 versions of the servo card... some had additions for a special project... I think V2 was the most generic.
05:24 PM _unreal_: I'll let you know if I come across any other things
05:24 PM _unreal_: is this v3?
05:25 PM ve7it: one of the changes was to use a packages oscillator instead of the 6Mhz xtal... I am hoping the hex file matches the hardware, or you might have to rebuild from source files.
05:27 PM ve7it: The web page is for V2, I dont remeber what was in V3... some extra status outputs or something
05:28 PM _unreal_: time to preform surgery then
05:30 PM ve7it: You probably want to adjust the value of R12 to match your motors.. the opamp datasheet has a current limit chart I think. 3k3 is 7A, 5k is 6A.
05:31 PM _unreal_: had no idea
05:32 PM _unreal_: I'm not sure what the value of those motors are
05:32 PM _unreal_: I'm thinking I may want to tie in a POT then
05:33 PM ve7it: (2nd comment on schematic)... A 2 amp motor will probably be ok with 6A peak drive... just dont leave it stalled!
05:33 PM _unreal_: two of my motors are the same as the one in your photo
05:34 PM _unreal_: so what ever value for that motor was used I assume should be what I use
05:34 PM ve7it: The servo will be easier to tune if the current range in the drive is close to the motor specs.
05:34 PM _unreal_: My 3rd motor I dont know what its values are
05:35 PM _unreal_: ve7it, this is the 3rd motor
05:35 PM _unreal_: https://www.ebay.com/itm/Electro-Craft-Reliance-Electric-E242-242-024-0141-Servo-Motor-Planetary-Gearhead/383317344051?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
05:38 PM ve7it: those are pretty chunky motors... leave it as is.. if you find the motor or the drive is getting too hot to touch, you can always change the resistor to limit the max current.
05:41 PM ve7it: The nice thing about this design is you have hardware current limits so the chance of demagnetizing the motors is slim.
05:44 PM _unreal_: That motor I linked is driving me nuts that I cant find any specs on it
05:45 PM _unreal_: the gear reduction is rock solid tight. ZERO play in the shaft to the motor
05:45 PM _unreal_: 10-1
05:46 PM ve7it: cool... direct drive for Z maybe?
05:47 PM _unreal_: dont tempt me :)
05:47 PM _unreal_: ya I'm thinking direct drive
05:48 PM _unreal_: the encoder I have not even bothered to look up yet
05:48 PM _unreal_: its got 8 wires
06:26 PM unterhaus: ve7it I spend 6 months trying to demagnatize a motor and failed :)
06:28 PM unterhaus: probably should have explored just how hot the windings could get a little more
06:51 PM perry_j1987: giving this a try tonight http://linuxcnc.org/docs/html/gui/pyvcp-examples.html
06:51 PM perry_j1987: trying to cut down on the amount of manual MDI work i have to type in heh
06:53 PM perry_j1987: what are you guys up too
07:46 PM jdh: idling, it would appear
08:06 PM unterhaus: I'm looking up how to make gluten free naan
08:07 PM * Javabean is randomly looking at 685 firefox tabs to see which tabs he will close
08:08 PM unterhaus: I did that earlier, mostly just moved theimportant tabs to the left so I could find them more easily
08:10 PM Javabean: heh, i mostly do my tab maintence because 1000+tabs tends to make this pc run oddly
08:16 PM unterhaus: I guess they fixed their memory leak if you can have that many tabs open at once
08:21 PM * Javabean shrugs, has been doing this many tabs for a couple of years now... same pc, only 12gb ram on an i5 4440
08:58 PM elmo40: http://bit.ly/2QmjXS3
08:58 PM elmo40: cool vid about a guy who used a piece of railway and made an Axe
09:44 PM _unreal_: There all of my SMD parts have been solderd
09:44 PM _unreal_: ARG. I'm not a fan of lots of little bits
09:45 PM Tom_L: i think they're easier to work with than thru hole
09:45 PM Tom_L: down to about 0402
09:46 PM _unreal_: I was working on 1206
09:46 PM Tom_L: hell those are huge
09:46 PM _unreal_: I've always found through hole was a breeze
09:47 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/boards/atmega32u4/atmega32u4_1.jpg
09:47 PM Tom_L: the leadless chip was a bit of a challenge but the rest was a breese
09:48 PM _unreal_: damn rohas
09:48 PM Tom_L: i used lead
09:49 PM _unreal_: I just need to add the wires to my servo controller boards
09:49 PM _unreal_: and waiting on the final opamp
09:49 PM _unreal_: ARG...
09:50 PM _unreal_: also waiting on my giant caps
09:50 PM _unreal_: any thoughts on what sized fuse or circuit breaker I should use? https://www.ebay.com/itm/500VA-20V-12-5A-20V-12-5A-40V-CT-Power-Transformer-Antek-AN-5220/371662652156?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
09:51 PM Tom_L: i forget what size i put on mine
09:51 PM Tom_L: i've got more than one
09:52 PM _unreal_: so now I'm waiting on my giant caps, and my pic prorammer so I can even program the damn controller chips
09:52 PM Tom_L: i'm not wild about pics
09:53 PM Tom_L: i've used them in the past but not for quite a while
09:53 PM Tom_L: had picbasic pro and some c compiler for them
09:53 PM _unreal_: was entertaining. I found an error in ve7it's dspic board
09:54 PM _unreal_: not so much an error but a version miss match
09:57 PM CaptHindsight: 500VA / 120V = 4.17A x 30% = 6A rounding up
10:01 PM CaptHindsight: for fusing the secondary https://solahevidutysales.com/pdf/transformers/Fusing.pdf
10:02 PM CaptHindsight: so 10A slow blow on the primary
10:03 PM CaptHindsight: and for the secondary side, ~167% of the secondary current
10:04 PM CaptHindsight: oh sorry you are over 9A on the secondary so ~125% of the secondary current
10:05 PM CaptHindsight: https://m.littelfuse.com/~/media/electrical/white-papers/littelfuse-transformer-protection-white-paper.pdf
10:30 PM JesseG: Hey guys, any of you ever built a dynamic balancer? I just ordered some piezo furnace igniters off amazon to use as my vibration sensor...
10:30 PM JesseG: I have no idea what I'm doing but I sure wanna make a go of it :P
10:34 PM JesseG: Actually I have in mind to try and use EDM or cutting laser to remove mass while the object is still spinning on the machine :P
10:34 PM JesseG: or perhaps plating on some mass to balance if I can figure a way