#robotics Logs
Jan 26 2014
#robotics Calendar
00:47 Faek Hi
00:47 Jak_o_Shadows hi
00:47 evil_dan2wik Is this the right place to ask for help on 3D printer parts?
00:47 evil_dan2wik Right now I have everything but the belts
00:48 Jak_o_Shadows Not the ideal, but maybe doable?
00:49 evil_dan2wik well, the belts and the pulleys.
00:49 evil_dan2wik They need to be at least 30cm long each.
00:52 GargantuaSauce that sounds pretty short, you mean the axis is that long right?
00:53 GargantuaSauce so each belt needs to be a bit more than twice that length
00:53 GargantuaSauce anyway check out #reprap, i bet someone there has a good source
01:07 rue_shop2 sweet, I go the sprocket welded to the hub
01:07 rue_shop2 and the new 240V welder power cord works great, I dialed it up to 100A and cut some 1/4" steel
01:08 rue_shop2 AND I fixed the can opener, had to machine a new peice for it
01:08 wildmage arc welding?
01:08 rue_shop2 yea
01:08 wildmage never done any welding before, sounds fun
01:08 rue_shop2 and I got 3 sides put on the sand blasting booth
01:08 rue_shop2 wildmage, it gives you a new respect for what 35A can do
01:09 rue_shop2 its funny too, cause going into it from an electronics background, there was a voice in the back of my head screaming BAD! BAD! TURN OFF THE POWER!
01:09 wildmage i'd be curious to see what your shop looks like now.... i remember when you were building it
01:09 rue_shop2 FFFFZZZZZZZZZZZZZT
01:10 rue_shop2 see some youtube videos
01:10 rue_shop2 ..
01:10 wildmage i think youtube wasn't around when you started
01:11 rue_shop2 http://www.youtube.com/watch?v=Y0L-iOu-ipI
01:11 Jak_o_Shadows Welding is reasonably fun.
01:11 Jak_o_Shadows I'm bad at it, but still.
01:12 wildmage looks very busy there
01:12 wildmage i want my own workshop
01:12 rue_shop2 http://www.youtube.com/watch?v=UKbpc_qYMbs
01:12 rue_shop2 http://www.youtube.com/watch?v=Gg7K5X-_r2o
01:13 rue_shop2 those have background in them
01:13 wildmage so what do you do for money these days? are you gainfully employed?
01:14 rue_shop2 http://www.youtube.com/watch?v=VawBrNaM8zA&feature=player_embedded
01:14 rue_shop2 electrician
01:14 wildmage ahh yes, that will do it
01:16 rue_house I'm the guy who does the fiddlie stuff like PLC's and fire alarm systems, and telephone systems, and network panels
01:19 Jak_o_Shadows Ladder Logic is sorta annoying.
01:20 rue_house only if you have races and loops
03:13 aemquo Hello all.
03:16 GargantuaSauce greetings
03:18 aemquo Up to much?
03:18 GargantuaSauce wrestling with openscad
03:19 aemquo ah ok
03:20 GargantuaSauce it gets really unwieldy when you want to do complicated math
03:22 Jak_o_Shadows I like the idea of openscad, but I dislike how I have to do it with code
03:22 GargantuaSauce i just wish it had frigging variables
03:22 GargantuaSauce and functions with multiple statements
03:46 rue_shop2 it would be fine if they had re-used the povray language
05:34 SquirrelCZECH GargantuaSauce: yep, exactly reason why I try to make my own library in python
05:35 SquirrelCZECH that just generates scad code :)
06:14 password2 pew
12:33 robotustra_ https://www.youtube.com/watch?v=6uxwfohzuaE
12:33 robotustra_ gaf
12:33 GuShH_ robotustra: gaf?
12:33 ShH_ gags robotu
12:33 robotustra_ good afternoon
12:33 GuShH_ nananana
12:33 GuShH_ speak english motha fucka
12:33 robotustra_ :)
12:33 Tom_itx u 2
12:34 GuShH_ hmmm someone locked my door "bell" switch
12:34 GuShH_ I assume prank
12:34 adam789654123 Anybody do any house wiring?
12:34 Tom_itx yup
12:34 GuShH_ adam789654123: I can wire you a house in your house so you can wire while you wire
12:34 adam789654123 I just learned some stuff about it
12:34 GuShH_ cool
12:34 adam789654123 that was cool
12:35 GuShH_ share
12:35 robotustra_ hope new virtual machine from oracle will be more stable
12:35 Tom_itx sounds dangerous
12:35 GuShH_ haha
12:35 GuShH_ smoky hair
12:35 adam789654123 like inductive cross coupling cross cancellation
12:35 adam789654123 ill pull the link
12:35 GuShH_ problem is since different states and countries have different codes... you can't ever know it all
12:35 adam789654123 sure
12:35 GuShH_ yeah grab robotustra while you pull it out of him
12:35 Tom_itx you can't?
12:35 adam789654123 but this made me change my mind on a finished job
12:35 GuShH_ Tom_itx: unless you are rainman
12:36 adam789654123 very interesting
12:36 GuShH_ adam789654123: if it's finished who cares?
12:36 adam789654123 i do. i want it done right
12:36 adam789654123 besides, its not a big deal to fix
12:36 GuShH_ damn allergies won't let me see straight if I have to shoot a kid today
12:36 adam789654123 hte walls are allready opened
12:36 GuShH_ see you can't "open up walls" in my country, most houses are brick.
12:37 adam789654123 http://diy.stackexchange.com/questions/10623/can-i-run-a-ground-wire-of-a-single-circuit-to-the-panel-outside-the-house/10802#10802
12:37 GuShH_ only offices are assembled with us methods
12:37 GuShH_ you have the luxury of an open canvas in the us...
12:37 GuShH_ here, you don't know what's in the wall.
12:37 adam789654123 Im East Coast US
12:37 GuShH_ you often deal with galvanized steel conduit that has rusted in multiple places
12:37 GuShH_ so you can't pull wires through
12:37 GuShH_ and often damage the existing ones
12:38 adam789654123 "Inductive Coupling Cross Cancelation"
12:38 robotustra_ ok, I'm drawing new version of skull
12:38 adam789654123 This will dictate why you cant do the following
12:38 Tom_itx skull2
12:38 botustra_ crystall method is r
12:39 adam789654123 wire a switch with one power and only use part of the switch legs on the return
12:39 GuShH_ adam789654123: you are borderline audioph00l at this point
12:39 adam789654123 What is that?
12:39 GuShH_ robotustra: champagne?
12:39 robotustra_ music https://www.youtube.com/watch?v=6uxwfohzuaE
12:40 GuShH_ let's see what resonates in a russian's head
12:40 GuShH_ robotustra: so about that chicken or animal in congress at belarus... how's that going
12:40 GuShH_ did it get the job?
12:40 robotustra_ I don't care
12:40 GuShH_ paahaha
12:40 robotustra_ I'm in canada
12:40 GuShH_ was it a chicken?
12:41 GuShH_ I read it on the news I just didn't pay much attention
12:41 robotustra_ pigs?
12:41 GuShH_ I don't know, some animal
12:41 GuShH_ hilarious.
12:41 robotustra_ may be pigs
12:41 GuShH_ talks heaps of how serious of a country it is
12:41 robotustra_ I don't follow their news
12:41 GuShH_ robotustra: say I don't want to get busy with no child... so no crystal method for me.
12:41 robotustra_ a lot of pigs died in USA
12:41 adam789654123 The electrical inductance created by running one power to two powers in different appliances is VERY INTERESTING to know about
12:41 GuShH_ me neither it was mixed in with the local news
12:42 adam789654123 this could create all kind of strange phenomena
12:42 GuShH_ robotustra: oh, dead americans?
12:42 GuShH_ bacon overdose?
12:42 robotustra_ american pigs
12:42 GuShH_ picture strips coming out of their nose, grease out of their ears, eyes flipped.
12:42 robotustra_ no pork any more
12:42 GuShH_ he OD'ed on... bacon. YEEEEEEEEEEEEEEEEEEEEEAaaaaaaaah
12:42 GuShH_ robotustra: too bad for them
12:43 GuShH_ I don't cook much bacon, only fries with cheddar and bacon
12:43 GuShH_ like on wendys
12:43 GuShH_ but mine is better.
12:43 robotustra_ canadian pigs are ok
12:43 GuShH_ you dating one?
12:43 robotustra_ but I don't know for how long
12:43 botustra_ redrawing s
12:43 adam789654123 http://www.electrical-online.com/wiring-a-circuit-how-to-run-two-lights-from-one-switch/
12:44 GuShH_ how-to-electrocute-yourself-in-2-minutes
12:44 adam789654123 youll notice that in this layout will cancel out inductive capacitance
12:44 adam789654123 that must be a big part of WHY that circuit looks the way it does
12:45 adam789654123 Atop the requirement that all appliances, outlets, etc, be wired in parallel
12:45 GuShH_ at the previous house I could read over 100v floating on one of the flood lights when it was off, all capacitively coupled
12:45 GuShH_ (we are on 220 here)
12:45 adam789654123 Are you pulling my leg?
12:46 GuShH_ reminds me I need to buy the remaining stuff to finish the new panel and rewire it all
12:46 GuShH_ I'm not
12:46 adam789654123 How did you do the test?
12:46 GuShH_ voltage probing at the receptacle with no halogen bulb
12:46 GuShH_ the coupling is weak anyway
12:46 adam789654123 and there was no power running to the receptacle?
12:46 GuShH_ it was being induced.
12:47 adam789654123 that is f*cking crazy!!!
12:47 adam789654123 wow
12:47 GuShH_ adam789654123: but most of the wiring in the house was done poorly
12:47 Tom_itx by you?
12:47 GuShH_ there are no strict regulations at houses you can do whatever you want
12:47 GuShH_ Tom_itx: cute, nope.
12:47 Tom_itx :)
12:47 adam789654123 yeah. i would have done the same if i didnt learn about this
12:48 adam789654123 im so glad to have gotten a heads up on the problem with wiring in series
12:48 Tom_itx common sense plays a big part in making anything work right
12:48 adam789654123 (which my dumb ass did)
12:48 GuShH_ Tom_itx: but one instance it was my brother. he couldn't get a light switch to operate, he ended up bringing mains from upstairs onto the cooling duct (air extractor at the bathroom) and he probably ended up placing the light in series with the motor, because either the motor would run, or the lights would but dimly. based on switch positions.
12:48 adam789654123 And I also used one hot to power two legs
12:49 adam789654123 two switch legs
12:49 GuShH_ and if you imagine that most people would pull similar stunts all the time, after you buy a used house it's a nightmare to fix the electrical
12:49 GuShH_ I'm still fixing this place up
12:49 GuShH_ they pulled PG from most of the house
12:49 adam789654123 it would be interesing to have an incudcive coupling meter and do some experiments
12:49 GuShH_ and used water pipes instead, but the wrong pipes... the heated pipes from the radiator, see where I'm going? people are idiots.
12:50 GuShH_ there's nasty green corrosion on the radiators that were wired this way.
12:50 GuShH_ and white sulphates / oxides
12:50 GuShH_ you just never use hot water for pg, and you certainly try not to use any water pipe for pg anyway.
12:50 adam789654123 pg?
12:51 GuShH_ protective ground / earth
12:51 adam789654123 ohhhhhh
12:51 GuShH_ they also rewired the phases, one is left floating (unused) which was originally meant for the heater/furnace, the second phase for lighting and the third for outlets
12:51 adam789654123 fuck
12:51 adam789654123 here was something interesting i found that maybe you would understand
12:51 GuShH_ adam789654123: I also found chunks of hookup wire dangling off some light fixtures outside, where they probably had hooked up female receptacles or some shit, I can only guess.
12:52 adam789654123 hmmmm
12:52 GuShH_ and lots of other attrocities.
12:52 adam789654123 i measured the voltage between the hot on two 120 volt circuits and came up with 240 volts
12:52 adam789654123 which i didn't expect
12:52 adam789654123 maybe they are out of phase?
12:52 adam789654123 seemed strange to me
12:52 GuShH_ instead of wire nuts the civilized people around here use terminal blocks / strips, otherwise most electricians will use electrical tape instead of wire nuts... yes, tape.
12:53 GuShH_ adam789654123: yes two phases most likely
12:53 GuShH_ adam789654123: for instance if I measure between two 220 phases I get 380
12:53 GuShH_ which is what my welder uses in bi-phase mode
12:53 GuShH_ to ease the load on the wires (ie. less current across) allowing me to reach the maximum settings
12:54 GuShH_ well in theory, I found places wired with thinner gauge
12:54 GuShH_ hot spots, bad.
12:54 adam789654123 I wonder where the phase is changing
12:54 GuShH_ I should probably rewire the entire house, but that's an expensive project for me.
12:54 GuShH_ adam789654123: and it's a single phase circuit?
12:54 adam789654123 im actually not sure
12:54 adam789654123 there may be two phases at the box perhaps i guess
12:54 GuShH_ then it could be a motor in series or some funky crap, most likely it just is two different phases which is neat
12:55 GuShH_ allows you to wire a clothes drier and other appliances
12:55 adam789654123 hmmm
12:55 GuShH_ that require many amps
12:55 GuShH_ it's common in most parts of the US
12:55 GuShH_ imagine if it takes 20A at 220V it would take 40A at half the voltage
12:56 adam789654123 right
12:56 adam789654123 this was the heads up i got about not wiring in series
12:56 GuShH_ what's nice is to have more than a single 220v outlet just in case you want to power some tool that requires it
12:56 adam789654123 which was kind of duh, because i knew about voltage drops
12:56 adam789654123 its just been awhile since ive studies this stuff
12:56 GuShH_ speaking of which I had 180V under load on one phase a week ago
12:56 GuShH_ on a 220-230 circuit
12:56 GuShH_ I think the grid was overloaded, or most likely just the transformer.
12:56 adam789654123 but that is the basic formula i suppose
12:57 adam789654123 the power = voltage * amps
12:57 GuShH_ at 180 the fridge compressor wouldn't start
12:57 adam789654123 so reducing voltage increases amps
12:57 GuShH_ yes
12:57 adam789654123 which is why its dangerous to wire anything in series
12:58 adam789654123 atop of burning motors up quicker because they struggle underpowered
12:58 GuShH_ well you can use motor protectors
12:58 adam789654123 never heard of them
12:58 GuShH_ your fridge has one
12:58 adam789654123 ill find a link
12:58 GuShH_ aside from the relay that switches over the start winding it also has a bimetal switch / thermostat
12:58 GuShH_ mine for instance trips open at 6A
12:59 GuShH_ newer ones may use MOVs or similar, don't know
12:59 GuShH_ do I look like I have a money growing tree... my fridge is older than me.
13:00 ShH_ loves old stuff, it lasts forever if you take care o
13:00 adam789654123 my computer is like 13 years old
13:00 GuShH_ adam789654123: anyway similar devices can be fitted to most motors, some already have built-in thermal protection
13:00 adam789654123 if i buy a new one, im luck to get 3 years out of it
13:01 GuShH_ for IRC even smoke signals will work
13:01 GuShH_ that's how Tom_itx communicates with us
13:02 adam789654123 hahahah
13:02 adam789654123 i thought there was a fire!
13:03 adam789654123 personaly, i like using two wires tied into the local loop to tap mores code. but to each their own
13:04 adam789654123 https://en.wikipedia.org/wiki/Local_loop
13:05 adam789654123 GuShH_: Is there a protector for too little voltage?
13:05 adam789654123 GuShH_: I guess that would be for to high amps
13:05 adam789654123 if the amps where too high then break the circuit
13:06 adam789654123 i guess would work for protecting agains too low a voltage
13:11 adam789654123 GuShH_: Thanks for the chat. That was actually very useful for me
13:13 GuShH_ Ophone.... lawl
13:14 GuShH_ adam789654123: there are protectors for over and under voltage as well
13:14 GuShH_ so the ophone, send smells to your loved ones <grin>
13:16 adam789654123 GuShH_: my naive design would be to use the amps for the under-voltage, basically like a circuit breaker
13:17 adam789654123 but not sure about the over voltage, because im thinking this would actually case amps to go down
13:18 adam789654123 but then again, if thing drawing power is basically replaced with a resistor
13:18 adam789654123 here i go drawing diagrams
13:21 MrCurious http://themetapicture.com/things-are-somehow-different-in-canada/
13:24 adam789654123 MrCurious: Great pics. My favorite was the bobcats at the mcdonalds.
13:25 MrCurious i like the cacr under 10' snow and canadian archeology
13:25 rue_house hah, good ones
13:25 robotustra_ work work work
13:25 adam789654123 I really liked that one also. Never see anything like that in Jersey
13:26 rue_house (for reference, when the busses are out of service, they say 'sorry')
13:27 adam789654123 How about that dude kissing the moose
13:27 adam789654123 he must have lived around them his entire life
13:38 adam789654123 GuShH_: you in?
13:44 robotustra_ MrCurious: :)
13:45 MrCurious yup
13:45 robotustra_ I'm not so canadian yet :)
13:45 adam789654123 I now have two contradictory models now for electrical circuits
13:46 MrCurious i am so sick of trying to get this virtual net bridge to route outside
13:46 adam789654123 Anybody familiar?
13:46 robotustra_ "canadian" replace with proper word
13:46 adam789654123 I am thinking that if you use power rating of an appliance as fundamental, then calculating for decreased voltage increases current
13:47 MrCurious CND
13:47 adam789654123 but cant every appliance be considered a resistor on the circuit?
13:47 adam789654123 hmmm....
13:47 MrCurious the ehh's only are pronounced when pelling it long form
13:47 MrCurious spelling
13:47 robotustra_ "stupid"
13:54 adam789654123 http://wiki.answers.com/Q/What_is_reactive_power
13:56 adam789654123 "This undesired "energy sloshing" effect can be eliminated. If an electrical load contains both a coil and capacitor, and if their resonant frequency is adjusted to exactly 60Hz, then the coil and capacitor like magic will begin to behave like a pure resistor. The "energy sloshing" still occurs, but now it's all happening between the coil and capacitor, and not in the AC power lines. So, if your appliance contains a large coil ind
13:56 adam789654123 motor, you can make the motor behave as a pure resistor, and reduce the current in the power lines by connecting the right value of capacitance across the motor coil. "
13:57 adam789654123 So this is probably how motors are desined, to act like pure resistors, i am thinking
13:57 GuShH_ adam789654123: read on RC circuits
13:57 GuShH_ resonant tanks etc
13:58 GuShH_ only run caps will help with that, start caps are only meant to provide a "second phase" for that extra push during startup.
13:59 adam789654123 So does the power actually go up if two motors are in series?
13:59 adam789654123 the amps increase?
13:59 adam789654123 it seems like they would not
13:59 GuShH_ no they decrease
13:59 adam789654123 ok
13:59 adam789654123 that makes sense to me
13:59 GuShH_ in parallel you have two loads instead of one
13:59 adam789654123 [sanit check: you passed] :D
13:59 adam789654123 which increases the current
13:59 adam789654123 and maintains voltage
13:59 ShH_ throws some ice cubes at Tom
13:59 adam789654123 ok
14:00 adam789654123 because we just talked about how reducing voltage would increase amps because the appliance would maintain power
14:00 adam789654123 but thats not what happens it seems
14:00 GuShH_ the lawn seems to be just about ready for decapitation but am I?
14:01 GuShH_ adam789654123: depends on type of load, inductive, resistive, capacitive
14:01 adam789654123 the appliance simply sits bettween the voltage
14:01 adam789654123 hmmm
14:01 adam789654123 i took an excerpt from the link above
14:01 GuShH_ a capacitive - reactive load would not increase power draw if the voltage goes down for instance
14:01 adam789654123 ok
14:02 adam789654123 it seems like power is not something to start with, but something to calculate from other values
14:02 GuShH_ adam789654123: and inductors resist changes in current, whereas capacitors resist changes in voltage.
14:03 adam789654123 ok
14:03 am789654123 brain motor slowing beginning to
14:03 GuShH_ I should get goin'
14:03 adam789654123 ok
14:03 adam789654123 thanks GuShH_
14:03 GuShH_ maybe you need to check your start capacitor and winding on that brain
14:03 GuShH_ slow startup indicates that!
14:04 adam789654123 just needs some starter fluid!
14:04 GuShH_ also line voltage
14:04 GuShH_ oh it's internal combustion?
14:04 am789654123 mind blo
14:04 ShH_ g
14:04 adam789654123 i think i blew a gasket
14:04 adam789654123 GuShH_: take care.. thanks
14:04 GuShH_ I wonder if the starter fluid contains toluene...
14:05 adam789654123 caffeine
14:05 adam789654123 not recommended for long term performance
14:06 adam789654123 too much tension on the pistons
14:07 GuShH_ could blow a ring?
14:07 GuShH_ that sounds good, no more wife.
14:07 rue_house Tom_itx, could you search the log for 'trimaran' and see what you get?
14:07 adam789654123 " Like other solvents, toluene is sometimes also used as an inhalant drug for its intoxicating properties; however, inhaling toluene has potential to cause severe neurological harm.[2][3]"
14:07 adam789654123 im f*cked :/
14:07 adam789654123 oh well
14:10 rue_house adam789654123, the capacitor thing is for inductive motors
14:10 GuShH_ adam789654123: nah that's not what I meant
14:10 GuShH_ but yeah kids do inhale that stuff
14:10 MrCurious openstack now routes vm traffic NAT to the outside... VICTORY!
14:10 GuShH_ contact adhesives with toluene solvents have been taken out of most stores because they would break in to steal it
14:11 adam789654123 sheeesh
14:11 adam789654123 like the drugs in couph drops
14:11 GuShH_ pseudo efedrines?
14:11 GuShH_ or something wrose
14:11 GuShH_ worse* I don't know, not in to that
14:11 adam789654123 a brother of a freind used to trip out on some boied couph drop soup or something
14:11 GuShH_ LOL
14:12 adam789654123 crazy sh*t
14:12 ShH_ doesn't have an addictive persona
14:12 GuShH_ I tried cigarettes, couldn't get addicted to tobacco at all.
14:12 adam789654123 GuShH_: great, you can countebalance mine
14:12 GuShH_ how many do you have to smoke to show signs of addiction?
14:12 adam789654123 used to smoke 3 packs a day
14:13 GuShH_ a pack at one go would get you hooked?
14:13 GuShH_ two packs?
14:13 adam789654123 used to have a tower coming out of my ashtray
14:13 GuShH_ haha
14:13 GuShH_ the tower of doom
14:13 adam789654123 id put out cigarettes between other ones
14:13 adam789654123 one time i was driving and that shit caught fire
14:13 ShH_ bl
14:13 adam789654123 scared the hell out of me
14:14 adam789654123 i didnt know what it was
14:14 adam789654123 first i just heard popping and smelled somthing funny
14:14 GuShH_ I've heard of a lethal car accident due to cigarettes
14:14 adam789654123 that was my last cigarette butt tower
14:14 adam789654123 i dont mess with that any more
14:15 GuShH_ The guy looked down to get the lighter, when he looked back up a semi truck was in front of him and that was it, everyone in the car died.
14:15 adam789654123 fuck
14:15 adam789654123 i used to be a much different person
14:15 GuShH_ Another instance where the cig fell down and he tried to get it back, same story.
14:15 adam789654123 ive changed so much over the years
14:15 robotustra_ F-WORD
14:15 ShH_ pictures The
14:16 adam789654123 i dont mess with thaht any more
14:16 adam789654123 very rarerly drink or smoke
14:16 adam789654123 im drinking coffee now, but even that is not good
14:19 robotustra_ adam789654123
14:19 robotustra_ where are you from?
14:19 adam789654123 East coast us
14:20 adam789654123 yourself?
14:20 robotustra_ Montreal
14:20 adam789654123 ive been there once
14:20 robotustra_ good
14:20 robotustra_ east coast is too wide
14:20 adam789654123 went there on my Vulcan cruiser
14:20 adam789654123 about 15 years ago
14:20 robotustra_ NY?
14:21 adam789654123 NJ
14:21 adam789654123 but yeah, just south
14:21 robotustra_ nothing to do in Montreal
14:21 robotustra_ 15 years ago it was a city
14:21 adam789654123 you guys had lots of prostitutes back then
14:21 robotustra_ niw it's village
14:21 adam789654123 im talkin on the phone
14:21 adam789654123 bb in a few
14:41 GuShH_ robotustra: http://www.youtube.com/watch?v=g-JIkjqQuaM
14:41 GuShH_ looks like a hayabusa
14:41 GuShH_ lmao
14:43 GuShH_ hmmm on closer inspection that _is_ his glove popping off, but that engine detonated anyway
14:44 ShH_ idly hacks passw
14:45 password_ :/
14:45 robotustra_ I don't know what has exploded
15:21 GuShH_ robotustra: what exploded: all of his hopes and dreams.
15:21 GuShH_ also his ass.
16:18 rue_shop2 is a shop too small when you have to unburry stuff to do even the things you do frequintly?
16:20 ace4016 possibly
16:21 ace4016 means you ned a storage shed for the things you don't need frequently :P
16:24 rue_shop2 I wonder if I can swap a 3.6nicad pack for a li-ion cell for a while
16:26 rue_shop2 3.99V and its charging, hmm
16:26 rue_shop2 maybe the nicad had reason to belly-up
16:29 rue_shop2 whats the charged voltage of a 3.6V nicad pack...
16:40 Tom_itx was it too small when you built it?
16:59 GuShH_ rue_shop2: under 4v surely
17:00 GuShH_ 3.75 stable, 3.8-9 max after charge
17:01 GuShH_ bah, more lawn to mow
17:10 rue_shop2 Interrupt: to encounter a verbal collision in this stupid half duplex method of communication.
17:15 Tom_itx GuShH_, get a goat
17:16 robotustra_ http://postimg.org/image/5g0o1y2gd/
17:18 robotustra_ http://postimg.org/image/5g0o1y2gd/full/
17:18 adam789654123 got a bit more info from an electrician friend of mine on the increasing of current due to reduced voltage
17:19 adam789654123 has to do with the reduction of impedence at lower voltages for electric motors
17:20 robotustra_ Ukraine rebell http://www.youtube.com/watch?v=vi_B637FCDY
17:24 adam789654123 https://en.wikipedia.org/wiki/Electrical_impedance
17:24 adam789654123 https://en.wikipedia.org/wiki/Electrical_impedance
17:24 adam789654123 In quantitative terms, it is the complex ratio of the voltage to the current in an alternating current (AC) circuit.
17:24 Tom_itx still goin on about electrical impedance?
17:25 adam789654123 yes
17:25 adam789654123 its interesting
17:25 Tom_itx i'll give it a page or two in history
17:26 RifRaf rue_shop2,what do you suppose is the new, sophisticated position feedback system to control its brushed DC motors http://3dprintingindustry.com/2014/01/27/robots-drones-use-brushed-dc-motors-3d-printers/
17:26 RifRaf i think its crap, just looks like quad encoder motors to me
17:27 RifRaf but wondering why they have 2 motors on each axis
17:27 Tom_itx those don't even look like 'great' motors
17:27 RifRaf Tom_itx, its a new shitstarter, but they don't want to disclose there new revolutionary method :/
17:28 Tom_itx the reason they haven't used them yet is two fold
17:29 Tom_itx cost and nobody in that croud probably knows how to tune PID that well
17:29 RifRaf i have a printer that can use dc motors, but with a linear encoder for the feedback, still need to implement the encoder but
17:30 Tom_itx some of those motors we got would do ok on one
17:31 RifRaf yep, i have a bunch of others i salvages, more powerful 12V gear motors,
17:31 Tom_itx http://tom-itx.dyndns.org:81/~webpage/motors/gearhead1.jpg
17:31 Tom_itx those might not quite be big enough
17:36 RifRaf haha zlog, you didn't get my secrets that time :)
17:37 rue_shop2 I wonder why they had to double up on the motors
17:37 rue_shop2 they have the xy in pairs, with an encoder on just one of them
17:37 RifRaf yep thats what i am wondering too
17:38 Tom_itx more torque
17:38 rue_shop2 shouldn't need it
17:38 Tom_itx or uneven pull on the axis
17:38 Tom_itx with it on one side
17:38 Tom_itx common for gantry mills
17:38 rue_shop2 AND I think they stole my idea for using current control on the filament feeder
17:39 RifRaf those bastards
17:39 rue_shop2 which would negate differences in diamiter and compensate for air
17:39 Tom_itx rue_shop2, do you use git much?
17:39 rue_shop2 no
17:39 rue_shop2 but I noticed now what everyone posts the command lines you need to use to get project archives
17:39 rue_shop2 which is good
17:40 rue_shop2 ok I dont have time to etch a pcb
17:40 rue_shop2 hmm
17:40 rue_shop2 what to work on
17:40 Tom_itx make a laser engraver from a DVD
17:42 Tom_itx http://www.youtube.com/watch?v=1L1VR8U74us&feature=youtu.be
17:56 Duzz been wanting to do that for so long
17:57 gushhtab Tom_itx: you want to make one!
18:02 Duzz I want to make one for making solder paste masks
18:02 GuShH_ Duzz: ok... you won't get lucky like that guy from ##electronics though
18:03 GuShH_ he bought a chinese laser engraver and didn't even know how to wire the 220 for it, we had to help him...
18:03 Duzz ?
18:03 GuShH_ and then decided to commercially make "disposable" solder masks
18:03 Duzz god no im not here for help
18:03 GuShH_ Duzz: No, I mean the niche market has been taken over
18:03 GuShH_ Also what's wrong with getting help...
18:04 Duzz want it for myself not as some crazy get rich scheme
18:04 ShH_ can't recall the guy's name that's all, he does remember his addiction problems th
18:04 GuShH_ those chinese machines have a lot of issues
18:04 GuShH_ like most chinese tools...
18:05 GuShH_ but the laser tube is rather powerful in general, compared to what you can do with a 22x dvd diode
18:05 GuShH_ from what I've seen.
18:05 GuShH_ Duzz: to cut transparent material do you need a sacrificial black surface underneath?
18:06 Duzz i would imagine, DVD diodes are not very powerful compared to comercial cutting diodes
18:06 ShH_ sh
18:06 GuShH_ but I bet they are cheaper
18:07 Duzz yea way way cheaper to buy a dvd burner than a single laser diode for the higher power ones
18:07 gushhtab You don't say :p
18:07 gushhtab How about your loc
18:08 gushhtab Local import rules
18:08 gushhtab In the US they do have restrictions
18:09 gushhtab Some military bs I bet.
18:09 Duzz from canada so we can normally get everything sent to us just listed under different names, you might end up on a few lists but life would be boring if you always avoided that
18:10 gushhtab Lol I wonder if Im in any list
18:10 gushhtab Aside from Tom's blacklist
18:23 Jak_o_Shadows Hmm, this local fasteners store seems cheaper than ebay/aliexpress.
18:24 GuShH_ Jak_o_Shadows: you actually used your legs and walked to a store?
18:24 RifRaf Jak_o_Shadows, many are, i get most fasteners local too
18:24 GuShH_ you do over-pay for a lot of things online.
18:24 Jak_o_Shadows No, this is still online. But a local distributor or something
18:24 GuShH_ bah
18:25 GuShH_ it's even cheaper if you pick it up.
18:25 GuShH_ use the force, move your legs.
18:27 Jak_o_Shadows "Hi, I want around 10 M2.5x10 bolts with nuts? Yeah, that's all"
18:40 GuShH_ Jak_o_Shadows: sure
18:40 GuShH_ do you want washers with your bolts?
18:40 GuShH_ lol
18:41 GuShH_ M2.5... what are you doing with those toy bolts?
18:41 GuShH_ my smallest tap is M3
18:41 Jak_o_Shadows Attach servo horns.
18:41 GuShH_ pfft.
18:42 GuShH_ They'll laugh at you at the store, all these big men working with M60+ bolts and you ask for M2.5 .. they'll tie you up and have you as their pet.
18:42 ShH_ chuc
18:42 Jak_o_Shadows pretty much.
18:42 Jak_o_Shadows Already got laughed at once, way back, for asking for a 15 A DC motor driver.
18:45 GuShH_ lol
18:45 GuShH_ aww you got scarred.
18:46 Jak_o_Shadows Not so much in that it's really inconvenient actually going there.
18:49 Jak_o_Shadows https://www.kickstarter.com/projects/ufactory/uarm-put-a-miniature-industrial-robot-arm-on-your?ref=live design seems nice enough.
18:49 Jak_o_Shadows Also, lifting a can of coke at 300mm distance? Not too bad.
18:49 Jak_o_Shadows I like how they showed their work envelope.
18:57 gushhtab I like going to the 'bolt store' heck if they paid well I would work there, so many cool tools!
19:20 Jak_o_Shadows Hmm, so coffee (rice) balloon vacuum gripper sorta works
19:28 Jak_o_Shadows Sure was nice of those uArm people to overlay their arm on a grid pattern so I can CAD a copy of it
19:56 Jak_o_Shadows Looking at a rough CAD model of the uArm I just threw together, I'm sure they had fun getting rid of inversions and singularities
20:00 ace4016 hrm...i'm not entirely impressed
20:08 robotustra_ Jak_o_Shadows: uArm?
20:08 Jak_o_Shadows https://www.kickstarter.com/projects/ufactory/uarm-put-a-miniature-industrial-robot-arm-on-your?ref=live
20:09 robotustra_ but what is it for?
20:10 Jak_o_Shadows fun. I'm looking at remaking it in inventor for fun.
20:10 ace4016 robotustra, it's a toy
20:10 robotustra_ but why can't you do it yourself?
20:10 ace4016 most people can't construct such things
20:10 ace4016 or don't want to bother with it
20:11 robotustra_ ok
20:11 ace4016 so they've made a business creating it to get a larger customer base :P
20:11 ace4016 economics!
20:12 robotustra_ I would like to be alive when the execution will be applied for the waste of natural resources
20:12 robotustra_ like this
20:13 Jak_o_Shadows Main reason I'm impressed is if it can lift a can of coke at 300mm
20:13 robotustra_ cut the wood, make plywood and make 1 billiond of toys
20:13 robotustra_ and put it to the trash
20:14 robotustra_ sad story about humans
20:22 robotustra_ when people young they do not realise that they live in the world of limited resources
20:47 ace4016 hrm
20:47 ace4016 while i don't like waste, i'm not sure how...practical it is
20:48 ace4016 perhaps being less wasteful and always trying to strive for it
21:28 rue_shop2 it seems to have level off the charge at about 4.16V
21:28 rue_shop2 sorta high for a li-ion
21:28 rue_shop2 not enough to worry me
21:29 Tom_itx new charger?
21:40 robotustra_ 4.2 V is ok
22:28 MrCurious1 America needs to step up and beat Somallia to .... DronePirates