#robotics Logs

Dec 24 2013

00:35 MrCurious and li-ion board revived
01:31 GargantuaSauce_ lol have fun with that connector
01:32 GargantuaSauce_ .4mm pitch
01:32 GargantuaSauce_ with two rows
01:33 GargantuaSauce_ and it's probably done with lead free solder of course
01:34 MrCurious thought it waas teh microusb connector, and i sacrificed it to get it out of the way to test with my laptop thinking i can replace 5 wire usb easy
01:34 MrCurious well, the coin came up tails, and i mangled the biggest connector
01:34 GargantuaSauce_ woopsie
01:35 MrCurious battery was flat and needed force charging to get it to take a charge through the charge controler board
01:35 MrCurious oddly enough it wont charge using the power brick, it only pulls 0.02W
01:36 MrCurious think i will have to timebox this project as i smell rabbit hole upon rabbit hole of failed parts
01:36 MrCurious maybe buying a hdmi 1377x768 panel would be cheapers
01:40 MrCurious supose up side is full size hdmi cable can be sacrificed and yeild 2 connectors to try to splice in
01:41 GargantuaSauce_ have fun with that
01:42 GargantuaSauce_ a 340MHz signal on hand-spliced cables
01:42 GargantuaSauce_ is gonna work real well
01:47 GargantuaSauce_ what's the run dude?
01:47 GargantuaSauce_ i have 212 stuck in my head and it's all your fault
01:51 MrCurious @!@
01:51 MrCurious i can be the answer
01:51 MrCurious now its in my heaad
01:52 MrCurious and the round li-ion cells charged up to 3.67 ea, and then became heaters
01:53 GargantuaSauce_ i would generally consider a lithium cell beyond redemption if it's hit zero
01:53 MrCurious thinking they are crap and not wanting to be my friend
01:53 MrCurious yeah
01:53 MrCurious not llike i dont have a butt load of em waiting to replace these
01:54 MrCurious i just want a chceap small hdmi friendly monitor
01:55 GargantuaSauce_ i am not sure all of those things are attainable
01:55 GargantuaSauce_ you can get 2 for sure, not necessarily any 2
01:55 MrCurious http://andreiprojects.blogspot.com/2012/06/raspberry-pi-modding-atrix-lapdock.html
01:55 MrCurious lovely 11" display
01:55 MrCurious hdmi
01:56 GargantuaSauce_ the cubieboard has an lcd driver
01:56 MrCurious if it would work, or rather if it would haave worked BEFORE i killed it
01:56 MrCurious hmmm i have a cubie board
01:56 GargantuaSauce_ which in theory should work with an arbitrary rgb lcd interface
01:57 GargantuaSauce_ i keep meaning to tear apart one of my old netbooks
01:57 GargantuaSauce_ since there are like 4 disused ones sitting in this room
01:57 MrCurious that is beyond my powers
01:57 GargantuaSauce_ i'd say it's easier than mangling an hdmi cable
01:58 GargantuaSauce_ just solder some jumpers and dick with the fex script
01:58 MrCurious THEN agin... the rpi has composite
01:58 MrCurious and i have a porable 5" dvd player with screen
01:58 GargantuaSauce_ that's an option too if you wanna live in 1953
01:58 MrCurious i can be happy with 320x240
01:58 MrCurious all it has to do is render a "baxter" like face
01:59 GargantuaSauce_ oh god
01:59 GargantuaSauce_ i think that thing is creepy as fuck
01:59 GargantuaSauce_ because every time it changes expression i expect it to display an enraged face and attack its operator
01:59 MrCurious was hoping to make mine into a telepresence bot
01:59 GargantuaSauce_ like something out of dr who
02:00 MrCurious with arms so it could throw them up in disgust, ,fold them, issue the 2 finger english bird
02:01 MrCurious http://www.afterpartz.com/us/3-5-tft-lcd-color-screen-car-rearview-monitor-dvd-vcr.html
02:01 MrCurious $20
02:01 GargantuaSauce_ i have a pretty strong hate for ntsc but hey if it works for you
02:07 MrCurious composite (yellow) can do 640x480
02:07 MrCurious i thought it was max 352xsomething
07:07 GuShH_Lap So third-worldy of MrCurious' country to have it's power lines frozen over and no electricity delivered...
07:07 GuShH_Lap MrCurious likes to bust my balls over such things, can't wait for him to come back online.
07:08 Faek 19 days of digimon world 3
07:08 GuShH_Lap what
07:08 ShH_Lap y
07:08 Tom_itx GuShH_Lap he just said he's wasted 19 days of his life
07:10 GuShH_Lap so I went to bed for an hour nap... forgot about the mail, they came over... I went outside while I was still getting dressed, this is another courier... I don't have much experience with them other than they are dipshits, they just asked who I was and never asked to see my ID, means anyone could've said they were me and take the package (shipping already paid for)
07:10 GuShH_Lap you have to use your id number when you sign the sheet, but they don't validate it that's my point
07:11 GuShH_Lap is there a name for "fearing to lose his package" but without thinking about sausage?
07:12 GuShH_Lap I don't believe in any of this by-word bullshit, I don't want my stuff ending up on someone's driveway or somewhere else. It should be mandatory to show your ID to identify yourself and in case you are not around, any document that validates your address.
07:12 Tom_itx if i saw it in your driveway, i'd kick it down the street
07:13 GuShH_Lap you bastard
07:13 Tom_itx they don't ask anything from me
07:13 GuShH_Lap it's wrong.
07:13 Tom_itx most of em know their route
07:13 GuShH_Lap so what
07:13 Tom_itx and who lives where
07:13 GuShH_Lap that's scary.
07:13 GuShH_Lap you think they know what colour underwear you have?
07:13 Tom_itx that's competence
07:13 GuShH_Lap THEY PROBABLY DELIVERED IT TO YOU
07:14 Tom_itx maybe i don't wear any
07:14 GuShH_Lap eek
07:14 GuShH_Lap 16 bucks shipping works out fine if gas or time are factored in...
07:14 GuShH_Lap Tom_itx: isn't that a problem with jeans
07:15 GuShH_Lap or do you have leather balls
07:15 ShH_Lap wears cotton boxers only, can't wear any of the synthetic stuff ... not that you should know or c
07:16 GuShH_Lap are guzzi bikes collector items over there?
07:16 Tom_itx i'm not sure
07:16 GuShH_Lap original moto guzzi from 40-50s
07:16 Tom_itx haven't seen too many
07:16 Tom_itx yeah
07:16 GuShH_Lap got offered one for restoration
07:17 GuShH_Lap I fear I would have it gathering dust and never restored because I may not be able to find the parts for it
07:17 Tom_itx look for parts then
07:17 Tom_itx see what you find
07:17 GuShH_Lap how do you get a mint condition original seat for one of those bikes? the seat is often the first part to go, so a parts bike won't have a good seat
07:18 GuShH_Lap I think the tank is also non original
07:18 GuShH_Lap But then OCD takes over and you try to source NOS paint from that era... and everything goes down hill.
07:19 GuShH_Lap Tom_itx: I doubt it's worth it, chroming costs a lot... you may end up spending more on it than your initial investment and maybe even more than it's worth
07:21 GuShH_Lap plus it's not my style of bike https://www.google.com/search?q=guzzi+235+lodola+mod+58&rlz=1C1LENP_enAR520AR520&espv=210&es_sm=93&source=lnms&tbm=isch&sa=X&ei=Y4a5UqiQEs7gsASq64DwBA&ved=0CAkQ_AUoAQ&biw=1440&bih=798
07:22 GuShH_Lap it's like a ducati 175 TS but made by guzzi
07:23 GuShH_Lap oh the MV Agusta 175 is also pretty much the same... THEY ALL ARE
07:24 GuShH_Lap otherwise they offered me a paperino, another old italian bike but less displacement, less fancy. missing quite a few parts. they all need the engine reworked anyway
07:25 ShH_Lap p
07:37 Tom_itx 16� F
08:32 rue_bed 2.5�C
08:34 rue_bed ok, half day at work
08:34 rue_bed then i need to do some presents
08:53 GuShH_Lap 29�C
12:56 MrCurious Grizzly catalog came today... A source of great expensive evil goodness
13:09 GuShh_Lap2 MrCurious: so third-worldy of the US to have it's energy cut out by frozen wires huh?
13:10 Shh_Lap2 pats MrCurious on the
13:13 MrCurious well now, we have that too
13:13 MrCurious but some of us move to where that doesnt hapen
13:14 MrCurious in exchange for pancaking freeways and building
13:15 Shh_Lap2 frowns at MrCur
13:15 GuShh_Lap2 You said something about Karma the other day...
13:15 GuShh_Lap2 :p
13:15 MrCurious i am still kicking myself for breaking the micro hdmi d connector on my lapdock
13:15 GuShh_Lap2 oh well things are things
13:16 GuShh_Lap2 it was designed to break, if it makes you feel any better.
13:16 MrCurious apparently i am not putting enough good karma off...
13:16 GuShh_Lap2 to the masturbation room!
13:16 MrCurious i thought it was an easily replacable micro usb
13:16 MrCurious i helped it break
13:16 GuShh_Lap2 it was meant to happen says the budha
13:17 GuShh_Lap2 for guys who don't really eat all that much that's one fat bastard.
13:17 MrCurious yes, and i am a man, and as such act as a man, and should forgive myself for my nature
13:17 Shh_Lap2 shakes fist at relig
13:17 MrCurious brb, going to dive into my belly button
13:17 MrCurious *POOF*
13:18 GuShh_Lap2 o.o
13:21 MrCurious thinking the remedy might be to get a micro-D to HDMI A adapter
13:21 MrCurious peel back the microd male sheath
13:21 MrCurious then solder the llose pins, still in order to it
13:28 GuShh_Lap2 MrCurious: can't do a warranty claim scam on the dock?
13:29 MrCurious i think the total dissassembly including scalpel action may rohibit that
14:32 GuShh_Lap2 MrCurious: so?
14:33 GuShh_Lap2 look it's kum-fu-dandy I mean KongfuPanda
14:33 KongfuPanda WHO IS BUZZING ME?
14:33 GuShh_Lap2 oh wait I got a better one instead of panda, panties.
14:33 KongfuPanda I give you beatings ＼(◎o◎)／
14:33 GuShh_Lap2 careful I might enjoy them
18:02 MrCurious yeah... dont go threatening GuShH with a good time
19:08 GuShH_Lap Tom_itx: is there a simple formula to figure out the max safe static pressure on tubing, specifically 6061 aluminum with 3mm wall thickness, half inch diameter and 1 inch diameter, I'm not sure if length plays a factor here...
19:12 Tom_itx http://gilley.tamu.edu/BAEN464/Handout%20Items/Chapter%2010.pdf
19:12 GuShH_Lap Tom_itx: it's for CO2
19:13 Tom_itx that's mostly for plasic
19:13 GuShH_Lap I could bore a 15mm hole into a 1 inch solid round stock but that's a waste of aluminum if I can use this 3mm wall tubing instead with threaded caps
19:14 GuShH_Lap I know the solid round with the 15mm hole will happily take the 70BAR maximum pressure, just not sure about the tubing
19:18 GuShH_Lap Tom_itx: generally speaking it never sees more than 60-70BAR at room temperatures either way I'd like to design for 100BAR.
19:20 GuShH_Lap if I had more aluminum to spare and a hydraulic pump with the proper fittings I'd try testing the assembly...
19:20 Tom_itx why aluminum?
19:21 GuShH_Lap that's what I have and it's lightweight
19:22 GuShH_Lap I read it's generally 7500 pund inch squared for alu
19:22 GuShH_Lap 100 bar is 1450 pound per square inch, says this magic website.
19:22 GuShH_Lap oh no it's a conversion... silly me
19:23 GuShH_Lap it states 342 pounds per square inch for 1inch outside diameter, 3mm wall thickness
19:23 GuShH_Lap that's less than 25BAR, either this is wrong or I'm not reading it correctly
19:23 GuShH_Lap plus alloys are all different...
19:31 rue_house yea the lead alloys are really something
19:48 GuShH_Lap rue_house: how's that helpful? heh
19:48 GuShH_Lap still can't get a theoretical value...
19:49 GuShH_Lap I know the threaded ends will be the weakest points but I'm still on square one
19:57 robotustra not bad
19:57 robotustra http://www.kickstarter.com/projects/electroninks/circuit-scribe-draw-circuits-instantly?ref=discovery
19:58 botustra wants this
19:59 GuShH_Lap robotustra: can you help with the pressure calculation?
20:02 GuShH_Lap all I could find is the yield strength for 6063 which is 21000psi
20:05 GuShH_Lap then a rough chart that states 1" outer diam and 2.5mm is ~1950PSI
20:06 GuShH_Lap which is 135 bar or so... at 3mm I should be OK in theory
20:06 GuShH_Lap since I won't be loading more than 70BAR
20:07 GuShH_Lap ok and at half inch with way less wall thickness (2.159mm) I get 2755PSI
20:07 GuShH_Lap these are "working pressures"
20:08 GuShH_Lap hmm anyway back to diner, more like dessert...
22:31 MrCurious Despicable me 2.... --- impossibleto watch in silence. you have been warned.
22:45 GargantuaSauce santa came through
22:46 GargantuaSauce got a sweet drill press :))
22:46 MrCurious thought you said dress pill
22:46 MrCurious had me puzzled
22:48 MrCurious i got 4 teensy 3.0's
22:56 MrCurious vilpittömästi haluaa sinun ja perheesi onnellisin vapaapäiviä.
22:57 GargantuaSauce finnish is one of those languages i would not wish on my worst enemy
23:03 MrCurious toc
23:13 MrCurious going to go out on a limb, and guess tonight will be slow here. (slower than normal)
23:28 m_itx chops the limb