#robotics Logs

Nov 24 2013

02:09 Jak_o_Shadows I think I have the maths for it.
02:09 Jak_o_Shadows Likewise with PID, i have a good deal of the maths for that.
06:40 Jak_o_Shadows annoyingly, apparently the GPS bearing from android is the bearing of your direction of travel. This is annoying as I was more hoping for a magical non-magnetic compass
07:10 doomlord_ lol
07:10 doomlord_ pp[s
07:10 doomlord_ oops sorry.
10:06 rue_bed PID math is easy, implementing the math isn't
10:08 chris_99 why not?
10:09 rue_bed have you ever done it?
10:09 chris_99 i've seen some code for a PID and it didn't look very complex
10:10 rue_bed heh
10:10 rue_bed no its not
10:10 Hukka Numerical integration math is easy?
10:10 Hukka Well...
10:10 rue_bed yea
10:10 rue_bed you just delta and sum every loop
10:10 Hukka I suppose if you just use a formula in front of you
10:11 rue_bed one of the things you have to be carefull of is to get the samples at regular time intervals
10:12 rue_bed aside from that tuning the paramiters is most of the work
10:12 chris_99 whatcha using the PID for anyway?
10:12 rue_bed chage the way the code works for constants >1 vs <1
10:12 rue_bed I have a hexapod with custom servos
10:12 rue_bed but so far I'm just using PI
10:13 chris_99 aha cool
10:13 chris_99 i need to implement a PID to control the temp of some beer
10:13 rue_bed must be australlia
10:13 rue_bed have a beer throwing robot?
10:14 chris_99 haha, that'd be more fun
14:06 MrCurious very slow morning it seems
14:26 Tom_itx you got a problem with that?
14:26 m_itx sets MrCurious on
14:26 MrCurious i am drilinng and tapping again
14:27 MrCurious is this really what making a cnnc is all about
14:27 MrCurious drilling.... and tapping...
14:27 Tom_itx i've been working on a new face for my pendant
14:27 Tom_itx cad wise
14:28 Tom_itx need to get some engraving bits for the lettering
14:29 Tom_itx i didn't like the way the center drill did
20:10 GuShH robotustra: sup
20:11 MrCurious evening gush
20:12 MrCurious GuShH rather...
20:15 GuShH hey
20:15 GuShH seems it's all bad news this week
20:16 Jak_o_Shadows hi
20:22 MrCurious how is that
20:23 MrCurious its been 1 bad and many good here
20:27 MrCurious GuShH: what has happened?
20:29 ShH doesn't want to talk abou
20:30 MrCurious ok
20:30 GuShH folks summer home got invaded again
20:30 MrCurious so cancer cat is still going?
20:30 GuShH I'm just sick and tired of it, third time... I know the cops are involved, everyone is... the realtors are all dirty
20:30 GuShH He's a tough son of a gun
20:30 MrCurious perhaps its time to rent it when they are not there
20:30 MrCurious or...
20:30 GuShH It's hard, because everyone is dirty over there.
20:30 MrCurious install spy cameras in secret locations
20:31 MrCurious so you can record the people doing it
20:31 GuShH it's a 800KM round trip every time I gotta head over there
20:31 GuShH nah I've had all services locked down
20:31 GuShH so nobody could get electricity, gas, water
20:31 GuShH on purpose.
20:31 GuShH but they're all dirty, they get the services back no problem.
20:31 GuShH it's a dirty town.
20:31 Tom_itx put disconnects inside and lock them
20:32 GuShH I've tracked them down and they're all ghosts.
20:32 GuShH Tom_itx: they can wire it up no problem, they have contractors.
20:32 GuShH I've changed all the locks 3 times now.
20:32 GuShH You should know that's not cheap
20:32 GuShH 2 per door, 3 external doors, 3 internal doors, plus fixing what they've damaged.
20:33 GuShH third time now, I know for sure they're not a couple low lives doing it, they're organized.
20:33 GuShH here's how they operate... they put an "on rent" sign on the house, they patrol the area for a week or two, if nobody removes the sign, they enter the home.
20:33 GuShH at that point, they change a few things around and they try to rent it.
20:34 MrCurious then camera lets you watch them, then public shame them.
20:34 GuShH you start figuring things out and hit dead end after dead end, they're all fake companies and they're allowed to operate because everyone is dirty
20:34 MrCurious as well as forcingpolice to act
20:34 MrCurious it will end the probllem
20:34 GuShH MrCurious: that kind of crap gets you shot.
20:34 MrCurious sounds a horrible placec to live
20:34 GuShH last time, we went with the cops (like the other two times) and this time we had the contractors on site
20:34 GuShH cops didn't ask for details as to who employed them
20:34 GuShH or anything.
20:34 GuShH they just let them go
20:34 GuShH I know they're all involved.
20:34 GuShH And it runs deep.
20:35 MrCurious lawyer up
20:35 GuShH no point.
20:35 GuShH It used to be the best place by the coast
20:35 MrCurious then rent the house, and the renters can defend it :)
20:35 GuShH nobody would steal anything
20:35 GuShH until the government gave up some land nearby, brownies flooded the zone and now this is going on.
20:35 MrCurious i have never had the problem of having too many houses before
20:35 GuShH MrCurious: It's not that simple.
20:36 MrCurious why isnt it that simple?
20:36 GuShH Say I put it on rent tomorrow after dealing with the mess they left behind (5 to 10k expenses, believe me that's the minimum) ... nobody can guarantee me they won't do it again after I leave
20:36 MrCurious thats why you keep it occupied
20:36 MrCurious or fix and sell
20:36 GuShH I could head over there next week and I might find brownies inside "fixing things up"
20:36 MrCurious make it someone elses problem
20:36 GuShH Again, not as simple.
20:37 MrCurious or shoot the home invaders
20:37 GuShH We were reconditioning the house, couldn't head over there for a couple months, and it happened again.
20:37 MrCurious as they are in your home
20:37 GuShH It's far away.
20:37 GuShH You can't shoot them here
20:37 GuShH You'll go to jail.
20:37 MrCurious you cant defend your home
20:37 GuShH And I'd rather not talk about what I would do.
20:37 MrCurious againt people breaking in
20:37 GuShH You can't do shit here, they are actually changing the laws to make it even more friendly for crooks
20:37 Jak_o_Shadows You can't generally use lethal force unless there is a very real risk of death.
20:37 MrCurious its a shame the furnace doesnt have a carbon monoxxide leak...
20:37 Jak_o_Shadows to yourself.
20:38 GuShH MrCurious: they would have to be armed and fired against you before you can defend yourself legally
20:38 Tom_itx hide a couple bear traps inside
20:38 GuShH There have been instances of shotguns rigged on doors, crooks getting their head blown off, and the owners going to jail for it.
20:38 MrCurious exposed HV wires...
20:38 GuShH I don't need ideas...
20:38 MrCurious can you bring suit against the squatters?
20:38 GuShH Nope
20:38 GuShH Police refuses to investigate, it's not their job they say
20:39 MrCurious then you need to sell it or live in it. no other solution
20:39 GuShH They are well paid not to talk.
20:39 MrCurious perhaps better locks and alarms
20:39 GuShH Can't sell as-is because the price is too low
20:39 MrCurious then you ppay them more!
20:39 GuShH Nah they enter through the windows.
20:39 MrCurious add steel bars
20:39 GuShH We had them.
20:39 GuShH They pulled them out
20:39 MrCurious electrified steel bars
20:40 Tom_itx they'd pull the wall out if i installed them
20:40 GuShH no electricity, I shut it all down so they couldn't use it should they enter the home
20:40 MrCurious giant van de graf generators in every room... motion activated
20:40 GuShH Tom_itx: they pulled chunks out
20:40 MrCurious how about leave it on, but monitor its use so most they get is aday
20:40 GuShH last time they were repainting the front of the house, they were trying to add a new fence, etc.
20:40 MrCurious if they occupy if for xx length of time, they get to own it for free right
20:41 MrCurious perhaps you can pay a local company to visit it daily
20:41 GuShH the previous guys were dope heads... they even had a couple plants growing inside, not sure if they were casual dipshits or if they left them in charge
20:41 Jak_o_Shadows uh oh, stackoverflow is down.
20:42 GuShH MrCurious: the neighbour asked me if I wanted him to live in the house while he rented his, thing is I don't trust the old brat as he doesn't even have the balls to call the cops.
20:42 GuShH Jak_o_Shadows: I mentally DDoSed 'em out of rage.
20:42 Jak_o_Shadows They're good for quick java stuff, cause java docs are bad
20:42 MrCurious that is a total first world problem. sorry we cant offer a viable solution
20:42 GuShH MrCurious: The logical solution would be to spend a lot of cash to get the place back in the condition it was, sell it, buy something closer.
20:42 GuShH It's not as simple as it sounds.
20:43 MrCurious encourage parents to live in one house...
20:43 GuShH It used to be you could leave the door unlocked, walk at night, do whatever you wanted over there and they were all friendly people
20:43 MrCurious solve it fast, as it sounds like there is a cost of not solving it, and value is eroding...
20:43 GuShH We were some of the first to settle in that zone
20:44 GuShH It runs deep, they've got everyone involved.
20:44 MrCurious so you bought the land
20:44 GuShH Enough of it... I might get tempted to head over there right now and do something I might regret.
20:44 MrCurious sell your place andlive in it yourself
20:45 GuShH it's too far away from civilization.
20:45 MrCurious enjoy the beach life and make stuff
20:45 Jak_o_Shadows well, it might take you a little while to get there first.
20:45 GuShH you can't enjoy it when there's a fucking mafia in charge.
20:45 MrCurious then it is a write off as you are unable to defend it, and unable to sell it
20:45 MrCurious just a constant source or torment
20:45 MrCurious sell it to maffia?
20:45 GuShH Jak_o_Shadows: try 4 hours if you floor it
20:46 Jak_o_Shadows Yeah, that's a decent amount of time and petrol.
20:46 GuShH I've run all the numbers, it's not feasable to keep the services going all year long, for what you get paid if you rent it... all goes down the drain, no income and sometimes you even lose money because they steal or break things
20:47 GuShH Plus you can't fix it all in one day, any of the legal related offices will close early and you can't split yourself into multiple entities....
20:47 GuShH And anyway it's pointless, they can do whatever they want.
20:48 GuShH MrCurious: here's the worst part, say I go right now and kick their ass, should someone be living inside... come tomorrow they might torch the place.
20:48 GuShH You have to think like a lowlife dipshit to consider all of the consequences.
20:50 GuShH Jak_o_Shadows: 1k in expenses for the vehicle alone, if you change all the locks that's another 1k, paper work, hotel, food, that's another 1k or so. The moment you're gone, they're back inside.
20:50 GuShH And you can't stay in the house, no services, you risk your vehicle and your life when you don't know who might be involved in this.
20:51 GuShH So common sense can't dictate your next steps, specially not if you're seeing red. All I can do is wait a couple days and try to be as stealthy as I can to figure out who's behind it all.
20:52 GuShH I don't know about you but I don't have a money tree, this is tax money should I spend it, I won't be able to pay my taxes, that's another issue.
20:53 Tom_itx no way to put a webcam inside and record who comes and goes? even if they steal it, you'll have the files
20:53 GuShH it would have to run off GSM and a solar cell for power + battery
20:53 GuShH say, another 1k?
20:53 GuShH also, 3 points of entry not counting the lower windows
20:53 Tom_itx compared to what you have lost, it might help you find who's involved
20:54 GuShH that's a lot of cameras, since... if they enter behind one of the cameras, what's the point ? they'll remove it
20:54 GuShH nope, only who was contracted to enter and fix up the place for rent
20:54 GuShH not who is behind it, they are well organized.
20:54 GuShH they even use a miami based broker website service
20:54 GuShH which allows them to hide their details, since they register the .com and everything for them
20:55 GuShH I'm pretty sure they rent their office and it's all done in cash.
20:56 GuShH we "caught" the previous guys, they were wetbacks and I say "caught" since the police let them go and asked for no details whatsoever as to who employed them, which is why I can't depend on them, they will escort me to the house if I want, but they can't do anything about it.
20:56 GuShH Oh here's another fun fact from our laws... if they've got children inside the house, you can't remove them by force
20:56 GuShH legally speaking they have a "right" to stay there, how messed up is that?
20:56 GuShH new laws will pass and they'll even have more rights than the owners. there's no private property anymore in argentina, it's fucked up.
20:57 GuShH They do all of this to gain votes.
20:57 Tom_itx they've started the same crap in the us
20:57 GuShH In any other country they would call social services for the kids and put the adults in jail.
20:57 Tom_itx nobody is willing to admit it yet though
20:58 GuShH I also can't just blow a week heading over there, spending money I don't have (just so it will all happen again later on)
20:59 robotustra night
20:59 GuShH Bah I need a coffee and something else to think about
20:59 GuShH night robotustra
21:00 GuShH Tom_itx: something similar is going on with my grandpa�s house.... it was taken over by one of his sons and he refuses to leave, there are 3 other sons involved (including my mother) but he's also living with his son, and his wife, she's now preggo... only because they know once a kid is involved, you can't get them evicted. I'm not making it up...
21:01 GuShH So if I'm sometimes "irritated" it's simply because of all this crap.
21:01 GuShH I should be focusing on my studies and getting a better job, not dealing with these sons of ...
21:02 GuShH Such malice out there
21:06 robotustra assembled the second eye
21:08 robotustra now to write SW for eye sync
21:09 GuShH robotustra: going to use both cameras for depth?
21:10 ablegreen stupid question, are the coils in a motor such as this one: http://globuselectric.com/images/mtrfail_str02-f.jpg ONE wire?
21:11 GuShH each coil is comprised of many loops of one wire, it may be joined at one point or another, but it can be seen as "one wire"
21:11 ablegreen okay thanks
21:12 GuShH or you could say "one wire per winding"
21:12 GuShH why?
21:12 GuShH see if you can find a diagram for the specific motor you're working with, it should show you the coils with A and B connections per winding
21:12 GuShH (could be center tapped too!)
21:18 ablegreen alright thanks
21:22 ablegreen gushh: i have an air compressor motor that looks like the one in the picture but much smaller. there's three wires coming out of it. does that mean there are three wires total?
21:29 GuShH ablegreen: AC?
21:29 robotustra GuShH: yes
21:29 ablegreen yes i think it's ac
21:30 GuShH no capacitors ?
21:30 GuShH three wires, if one is green and yellow that's your earth, the other is live and neutral
21:31 GuShH otherwise it could be slightly different, I'm just guessing without having seen the motor itself (if you've got a picture, all the better)
21:31 ablegreen there are capacitors, yes. they're huge
21:31 GuShH one is a start capacitor, the other is a run capacitor
21:31 ablegreen red, white and black
21:31 ablegreen i see
21:31 GuShH open the junction box if you want to see how it's wired
21:32 ablegreen there isn't one :P
21:32 GuShH how old is it heh
21:32 ablegreen a month old
21:32 ablegreen actually
21:32 ablegreen my bad there is one
21:33 GuShH so black and white are line, red goes to the cap
21:33 ablegreen yes i think so
21:33 ablegreen i took it apart so i forgot
21:33 ablegreen haha
21:33 GuShH so white and red are connected to the capacitor.
21:33 GuShH take pics before taking things apart heh
21:33 GuShH or take notes.
21:33 ablegreen yeah we did. i don't have them though
21:33 GuShH -_-
21:33 ablegreen so there are three wires total in this motor right?
21:34 GuShH at least it's single phase
21:34 ablegreen it's hard tracing the wires to all those coils
21:35 GuShH what's the product anyway if it's not old, there should be info out there.
21:36 ShH nudges ableg
21:36 GuShH Don't give me any more frustration than I've already got!!
21:37 ablegreen http://www.sears.com/craftsman-3-gallon-horizontal-air-compressor-with-hose/p-00915310000P
21:37 GuShH the cap is most likely for starting purposes, not running... but mine has both, it differs.
21:37 GuShH if you turn the shaft does it run freely or not?
21:37 ablegreen yes it does
21:37 GuShH if you feel friction, there's a start winding mechanism (centrifugal switch)
21:37 ablegreen i see
21:38 GuShH but there _are_ other switches such as MOVs (however from made-in-china products I haven't seen those)
21:38 ablegreen i see
21:38 ablegreen this project is to model all the parts
21:38 GuShH ugh sears geolocated me and refuses to display the product
21:38 ablegreen Craftsman 3 Gallon Horizontal Air Compressors 915310
21:39 GuShH question, why buy the 3 gallon when the next size up is usually only a few bucks more expensive?
21:39 GuShH 3 gallon is ideal for inflating tyres and nothing else
21:40 ablegreen it doesn't matter
21:40 GuShH looks like there have been many different models, one seems to have a very similar motor to mine
21:40 GuShH ablegreen: pfft
21:40 GuShH well it's a scaled down version
21:44 GuShH ablegreen: mine has a junction box and everything is properly labelled... why did you take it apart again?
21:45 ablegreen this is a class project
21:45 GuShH consisting of what?
21:45 ablegreen the objective is to take apart a product, model every part in creo/solidworks, then animate the assembly using 3ds max
21:45 GuShH you guys already failed in a way it seems :p
21:45 GuShH sounds fun though
21:46 ablegreen it's not fun
21:46 GuShH then this is not what you should be studying
21:46 ablegreen anyway, thanks for the help :)
21:46 Jak_o_Shadows for the love of god
21:46 Jak_o_Shadows do not use creo
21:46 ablegreen not all classes are fun, but most are
21:46 ablegreen yes it's awful
21:47 GuShH he uses what he's told to use, I don't think he's got an option
21:47 Jak_o_Shadows I like inventor, but i've heard good things about solidworks
21:47 Jak_o_Shadows oh yeah, but in general principle.
21:47 GuShH SW is ok if you can afford it
21:47 ablegreen we can use solidworks, as long as it can export to stl for 3ds max
21:47 ablegreen there are student editions, so no worry
21:47 GuShH Yeah but they either expire or they're limited in a way or another
21:47 GuShH So not interested.
21:47 ablegreen then pirate them
21:48 ablegreen as long as it's not for commercial use
21:48 GuShH I tried FreeCAD, it makes you want to pirate SW, that's how bad it is.
21:48 ShH stares at the storm out
21:48 Jak_o_Shadows freecad seemed like it had some decent ideas in terms of what it's trying to do, but how the heck to do anything I don't know.
21:48 GuShH it's similar to SW
21:49 GuShH but it's not stable at all
21:49 GuShH too buggy and unfinished for anything.
21:49 GuShH (all parametric modellers are similar)
21:51 Jak_o_Shadows I dislike creo, amongst other reasons, because it ignores the right mouse button in favour of the middle mosue button
21:51 ablegreen you can rebind commands to different buttons
21:51 GuShH no profiles for that?
21:51 GuShH even freecad has different input profiles
21:51 GuShH but it's so poorly made you have to constantly keep switching profiles to use it properly
21:52 GuShH massive t storm....
22:36 MrCurious GuShH: i think i have the solution to your problem
22:36 MrCurious and it is very obvious staring us all in the fface...
22:36 MrCurious you are in #robotics... with robotisists... make a robot to guard the house
22:55 GuShH MrCurious: short of a gun toting robot (which is illegal) it would be a waste of time and money.
22:57 MrCurious good idea )
22:57 GuShH Also I'd like you to come up with a solution to climbing stairs, power management, communication, etc.
23:19 MrCurious drill and tap drill and tap. so this is what this hobby has come to
23:20 GargantuaSauce if only you had a cnc to do it for you
23:20 GargantuaSauce you could also just say fuck it and go to town with the gluegun
23:20 MrCurious yeah, that would be nicec
23:21 MrCurious not the glue bit :)
23:28 MrCurious but i think once it is made, i will decorate it with hot glue, and those cloth strips that have the dangly ballls on it like found inside of lowriders
23:31 GargantuaSauce googly eyes on the x carriage
23:32 MrCurious no on the zz
23:32 MrCurious so they can look all over when it moves
23:32 GargantuaSauce yeees
23:38 GuShH add some truck nuts as well
23:38 MrCurious nah
23:38 MrCurious want those tire valve caps that look like skulls
23:38 GuShH eek
23:40 GuShH MrCurious: but... http://duhmerica.files.wordpress.com/2012/02/truck-nutz-girls-10.jpeg
23:41 GuShH wth a 37 minute video on "chuck maintenance and lubrication"
23:51 MrCurious thats enough productivity. 1 of the cross table supports installed
23:51 MrCurious next one needs 6 holes and 6 taps and its good too
23:52 GuShH 6 misaligned holes and 6 skewed taps?
23:52 GuShH best if you just drill through both parts and fasten as you go
23:52 MrCurious through holes with mating piece tapped
23:53 MrCurious so i can widen first hole to get slop if needed
23:53 MrCurious and i use clamped on drill-guide story-blocks
23:53 MrCurious to insure hole are as aligned as i can achieve
23:53 MrCurious hole punch and drill press when not doing end holes on long pieces
23:54 MrCurious decide to make a cnc from aluminum that you cut and machine yourself, and your journey will hand you machining exp as a conselation prize
23:55 MrCurious its like being back in high school shop class, without the annoying fat know it all telling you what you cant do.
23:56 Curious notes both shop teachers lost their left thumbs to the radial arm
23:56 MrCurious turned down a free one of those...