#robotics Logs

Jun 17 2012

00:07 ace4016 wasn't stating a fact or anything...
00:08 e4016 scratches
00:27 ShH wonders if damian_ caught on fire
00:28 GuShH furrywolf: was Tecumseh ever good?
00:31 furrywolf not that I know of.
00:37 furrywolf maybe their reallllly old stuff was, but I didn't use any of it.
00:37 GuShH me neither
00:37 ShH falls as
00:39 furrywolf I wish I could fall asleep, but someone several houses away is having a party with music so loud there's no chance I could.
00:40 katsmeow-afk they heard about your big Sansuis
00:41 furrywolf I make a point of never listening to loud music after dusk.
00:42 furrywolf doing so makes you an asshole, and I try to avoid being an asshole.
00:43 katsmeow-afk doesn't make me an asshole, i can crank sterio to deafening, i have R50 walls and then 8" of poured solid concrete
00:44 furrywolf I don't. :)
00:44 furrywolf I have walls framed with 2x2a.
00:44 furrywolf 2x2s
00:44 rue_mohr actually my shop is pretty good that way too
00:44 rue_mohr if I crank it to deafening in the shop, with everything closed up, its just audiable outside
00:46 furrywolf my walls do very little to dampen sound
00:47 furrywolf 1/4" wood paneling on the inside, mostly deteriorated fiberglass about a half inch thick in the 1.75" thick wall, then 22ga-ish aluminum.
00:49 katsmeow-afk i wonder how i got neighbors that are an equal magnitude to my house, and if the same situation is true for everyone
00:49 rue_mohr Triffid_Hunter, did you say you had a reprap?
00:49 katsmeow-afk because, this house is a +10 to me, and neighbors are a -10
00:51 katsmeow-afk i am now assuming the same holds for everyone? if you have moderately ok house, then you have moderately ok neighbors?
00:52 katsmeow-afk a blah house, and blah neighbors? a greatly good house, a greatly bad neighbors?
00:52 furrywolf I have a crappy house and even crappier neighbors.
00:52 katsmeow-afk o
00:53 damian_ GuShH: well thats mean >:(
00:53 damian_ furrywolf: I listen to loud music any time I want, because I use headphones :P
00:53 furrywolf I have a rotted old mobile home with hippie-built addons, an insane neighbors who steals stuff and threatens the landlord every time she's told to leave, a busybody neighbor who thinks everything that goes on at everyone else's houses is her business, and drunk frat kids who have loud parties.
00:54 damian_ back to the fire, seeya guys in awhile
00:54 damian_ hm, I should unplug this relay...
00:54 damian_ the ACDC adapter is hot O_O
00:55 furrywolf oh, and the guys up the road are alcoholics with guns. one of them went off to jail for a long long time for killing his brother.
00:58 katsmeow-afk ok
01:06 katsmeow-afk can't find the rest of the caps, i know they are in a box somewhere
01:08 rrywolf curls up next to katsmeow-afk for bed
01:12 rrywolf waits for pets to head off to
01:16 tsmeow-afk comes bak to pet the furry as she trys to make 27,000u caps fit where the space was perfectly designed for 10,000u
01:17 katsmeow-afk 162,000ufd sounds sooo much better in this psu than 60,000ufd
01:19 furrywolf heh, when I fix some of these chinese inverters, I'm going to fit 5600uf caps in place of the 1000uf caps.
01:19 furrywolf bbl, bedtime. :)
01:20 katsmeow-afk or i can fill in every available space with 1000ufd caps
01:20 katsmeow-afk they are considerably shorter tho, so they'll take up 2x as much space as the 10,000ufd caps
01:21 katsmeow-afk the space is designed around the 10,000ufd caps
01:21 katsmeow-afk the 27,000ufd capsa re 1/4 taller and 1/4 bigger diameter
01:21 furrywolf yeah, I had to find extra-tall ones on digikey to fit the most uf in the space available.
01:22 furrywolf bbl
01:37 katsmeow-afk you might think a 2U rackmount box 11.5" deep is plenty of room for 6 psu to fit into, but this is going to be quite densely packed
02:56 damian_ alright so after a lot of testing, my relay works fine just sending the (de-)energize code by themselves and relays 5 and 6 are broken
02:59 damian_ I'm not sure entirely if they are broken, but no matter what I did with them before, I hear clicking when I try to turn them off. As for turning them on, they only click if I had previously turned them off.
03:14 damian_ it also seems I can cram multiple codes into the device and it still works, though I need to test it more to make sure that works correctly
06:14 Triffid_Hunter rue_mohr: yeah I got a reprap :)
09:59 rrywolf stretches out and y
10:32 eadthem katsmeow-afk what about removing all the PSU's from the case and using a single row of fans on the front to cool them all
10:32 eadthem shuld reduce the required space some
11:06 katsmeow-afk eadthem, won't
11:07 katsmeow-afk the orignal design still works with the original components, but i would *really* like to make the design bulletproof when it comes to longer term overload capability
11:08 katsmeow-afk 50% bigger fans, 50% bigger heatsinks, 50% more pass transistors, 50% bigger capacitors with 100% more capacitance
11:10 rrywolf fluffs fur out as much as possible, to look to have 50% more pettable
11:11 katsmeow-afk the 19" rack width gets only 16" wide internal box width, and i'd like to use 2.5" wide fans (total 15" wide) on heatsinks 2.75" wide (16.5" total width, twice that if allowing for airflow around them)
11:12 katsmeow-afk plus, i found it necessary to add internal pwr supplies for the control circuits, which is taking up an area about 9" long, 2"x2" square
11:13 eadthem what is this for?
11:13 katsmeow-afk i do not understand that question
11:13 eadthem the power supply
11:13 katsmeow-afk supplying power, same as "what is food for"
11:13 furrywolf for powering things.
11:15 katsmeow-afk it's a general purpose bench power supply, for powering anything low voltage dc, up to 30v or so
11:18 katsmeow-afk this still works if i turn the heatsinks 90 degrees so fans at bottom : http://designerthinking.com/images/benchpsu/IMG_1011.jpg , even after adding in 50% bigger heatsinks and the seprate psu for internal-use control circuits
11:18 katsmeow-afk but that makes servicing either the fans or the pass transistors more difficult, because one or theother must be at the ottom
11:19 eadthem wow that things gonna run some power
11:19 eadthem i thought you wer talking computer power supplys
11:22 eadthem what chip is that?
11:22 eadthem it looks like its harris
11:23 katsmeow-afk compare the more recent http://designerthinking.com/images/benchpsu/IMG_1761m.jpg to the original parts of http://designerthinking.com/images/benchpsu/IMG_1011.jpg
11:23 katsmeow-afk chip?
11:24 eadthem first photo
11:24 katsmeow-afk oh, that pdip-40 is an avr
11:24 Tom_itx kat plays with avrs!!?
11:25 tsmeow-afk swaps it out for a
11:25 Tom_itx aww
11:25 dthem hands kat a
11:25 Tom_itx you never talk about avrs much is all
11:25 tsmeow-afk swaps it out for a
11:26 katsmeow-afk it's there, in the pic, only for scale, i figured on 3" of space behind the front panel for controls and wiring and airflow
11:27 katsmeow-afk that space is getting crunch down to 2", it looks like
11:29 katsmeow-afk eadthem : the bottom 3 pics : file:///C:/my%20domains/DesignerThinking.com/benchpsu.html#bottom
11:30 ace4016 (internal link)
11:30 ace4016 err...local rather
11:30 katsmeow-afk DesignerThinking.com/benchpsu.html#bottom
11:31 katsmeow-afk i need to fix that link problem, so if i dial in locally it default fetches from a localhost server
11:32 eadthem thats a hell of a case
11:33 katsmeow-afk anyhow, each psu gets a 2.25" tall and 2.5" wide amount of front panel space
11:33 katsmeow-afk you like the case? i designed and built from scrap steel laying around
11:34 katsmeow-afk as you can tell by the pits, it was pretty well rusty
11:35 katsmeow-afk hasto be strong, the mot is ~8lbs, and basically everything else just keeps adding up
11:36 katsmeow-afk note http://DesignerThinking.com/images/benchpsu/IMG_1761m.jpg isn't on the html page yet
11:37 katsmeow-afk and while cramming the 6 heatsinks in looks spacey, there's still and inch of airflow space in and out of each to consider, and each psu has 2 separate small heatsinks for driver transistors
11:38 eadthem ya thats a nice mot
11:38 eadthem the one i got has heavy welds on the sides makes it rather inefficant
11:39 katsmeow-afk they all do that nowadays :-(
11:39 eadthem the UPS transformer from the old APC 900 is by far a better transformer than the mot i have
11:39 eadthem sadly its not a split core but still it will happly do about 16V x 60Amps on the output
11:40 tsmeow-afk
11:49 tsmeow-afk ponders l
11:49 rrywolf follows katsmeow-afk to help eat her l
11:50 katsmeow-afk you're so helpful!
11:50 furrywolf yep! :)
11:52 tsmeow-afk "accidently" drops morsels of l
11:53 furrywolf meep!
11:54 katsmeow-afk i once had a cat that helped me out that way, she'd come watch me eat, even if it was salad, and i'd give her morsels, and when i was done i'd pass her the plate and watch her eat
11:55 katsmeow-afk once i carried a thanksgiving "care package" home that had turkey in it, and once home (14hr drive, 24hr past cooking time) it didn't smell right, so i gave her first dibs after i broke the meats up into small portions, and the portions she didn't eat from, i didn't either
11:57 furrywolf heh
11:57 katsmeow-afk she shared her wildlife catches with me too, but i graciously declined helping her actually eat them
11:57 eadthem my dad had a cat that would steel steaks off the table when your back was turned
11:58 eadthem ya know full sized Tbone turn around to get the seasoning and it would be gon and there would be a bloddy streak on the floor heading off in to the house
11:58 katsmeow-afk i had a cat that would sit (or stand, usually sit) on the bench beside me, with her front paws on the edge of the table, she'd go for food only if it was placed tween her paws at the edge of the table
11:59 tsmeow-afk misses being around intelligent beings, but cannot have a cat here and
12:03 katsmeow-afk woops, chanserv went away
12:03 katsmeow-afk ah, netsplitted
12:04 katsmeow-afk maybe
12:04 furrywolf services connect as a server, so it looks like a split if they go offline.
12:04 katsmeow-afk right
12:05 katsmeow-afk if they pull that server to take it offline
12:05 katsmeow-afk a proper shutdown with the server still up doesn't look like a netsplit, because services typcally connects as if a step below ircop
12:06 ace4016 usually he quits
12:06 furrywolf services connect as a server. they can do anything.
12:06 furrywolf they can do more than ircops. they can break things and make weird things happen. :)
12:06 katsmeow-afk i still wish they'd implement a local services that keeps last-known status while global services (with themaster status) is offline
12:07 katsmeow-afk i kow, but they don't carry user's ircop flags, nor can they affect a server's operation
12:08 katsmeow-afk and for a looong time, ircops couldn't affect *serv's data or operations, only interact in a limited way
12:10 katsmeow-afk i wasn an ircop on more than one net, and the differences in ircop/services is why i gave Tiggr over 100 permission flags for those who wanted access to her directly off-irc
12:11 katsmeow-afk time for lunch, bbl
12:11 rrywolf was a services coder, and could just add new features right to chan
12:11 furrywolf cyas
12:12 rue_bed sun!
12:12 eadthem your late
12:12 eadthem :p
12:12 rue_mohr good
12:12 Sunnyday I had lamb curry
12:13 Sunnyday yum yum
12:14 rrywolf wa
12:14 eadthem taco meat cooking
12:15 eadthem mitaswell give up programming while thats cooking :p
12:29 eadthem mmm no taco seasoning pouches
12:29 eadthem just have to make from scratch
16:08 damian_ well that was amusing....
16:08 damian_ I finally shutdown my computer yesterday and then I booted it today and it wouldn't boot
16:10 damian_ turns out the bootloader couldn't read the files it needed because I had defraged the partition it rresided on, which also caused them to be compressed because of the mount options I had set
16:12 damian_ on a better note, it seems my relay responds correctly to having multiple commands sent in one go
18:18 Sunnyday Beddy Byes For Snoozey Poosey Woosey pies!
20:52 rue_shop I must not try to cut wood with the arc welder
20:52 rue_shop I must not try to cut wood with the arc welder
20:52 rue_shop I must not try to cut wood with the arc welder
20:52 rue_shop I must not try to cut wood with the arc welder
20:52 rue_shop I must not try to cut wood with the arc welder
20:52 rue_shop I must not try to cut wood with the arc welder
20:52 rue_shop I must not try to cut wood with the arc welder
20:53 Tom_itx I'm not real sure why you would try
20:54 rue_shop small sidetables do not require 500lb capacities
20:54 rue_shop small sidetables do not require 500lb capacities
20:54 rue_shop small sidetables do not require 500lb capacities
20:56 rue_shop if you want t table to sit level, do not put more than 3 legs on it
20:57 Tom_itx or have leveling legs
20:58 rue_shop measuring pipe within 1/16" is pointless on a bandsaw that cuts its work off at an angle
20:58 GuShH rue_shop: controlling ac motors with triacs (on, off) does introduce noise in the line? I haven't scoped yet
20:58 Tom_itx that is due to feeding it too fast
20:58 GuShH can't get solid state relays for cheap, and not din mount anyway
20:58 Tom_itx it could yes
20:59 rue_shop GuShH, yes
20:59 GuShH sigh
20:59 rue_shop I DID IT! I BUILT A SMALL SIDE TABLE!
20:59 GuShH I couldn't find small contactors either
20:59 Tom_itx got my new heatsink rough cut
21:00 GuShH (1 or 2u din mount)
21:00 Tom_itx now i need to mill it square and clean up the ends
21:00 e_shop pulls the welder back into the shop and trots ar
21:00 Tom_itx rue_shop, you could use your welder to melt aluminum
21:00 Tom_itx use a carbon rod
21:00 Tom_itx it's how the big boys do it
21:05 orlok L297 motor controller
21:07 orlok Local shop is having a clearanec sale.. $5.50 each?
21:11 rue_mohr wouldn't wanna get tooo much carbon in the alum
21:11 rue_mohr ok I have to insert the sidetable into my room
21:16 GuShH orlok: there are way better alternatives than that ancient crap though
21:16 GuShH orlok: for equal or less price
21:16 GuShH orlok: it may be cheaper to get a pile of old printers and pull them out :p
21:17 GuShH rue_shop: any ideas on solid state control for small ac motors?
21:29 rue_mohr I should just start building power bars into my furniture
21:29 rue_mohr GuShH, how about an inverter
21:29 GuShH hm
21:30 rue_mohr what do you need .5A?
21:30 GuShH half hp in total, 220 mains
21:30 rue_mohr capacitor or inductive lag motor?
21:30 GuShH maybe 1hp in the future
21:30 rue_mohr ooo 400W or so
21:30 rue_mohr capacitor run?
21:30 GuShH yes
21:30 rue_mohr so 2 phase output
21:30 GuShH it's for a furnace burner and a water pump
21:30 rue_mohr do you have house insurance?
21:31 GuShH that's almost an insult
21:31 GuShH and uncalled for.
21:31 rue_mohr I'd say if your isured, maybe go with stock stuff
21:31 GuShH the reason I'm redoing it is because the old system could catch on fire.
21:31 rue_mohr insurance companies like to find reasons to reject paying out
21:31 rue_mohr even for things unrelated
21:32 GuShH if the fire starts there, I assume it would eat through whatever home-made crap could've caused it
21:32 rue_mohr is a commercial multi speed motor out of the question?
21:32 GuShH howver I would trust my design over any chinse shit I could buy locally
21:32 rue_mohr a house here burned down cause the place beside it caught fire and spread
21:32 rue_mohr they wouldn't pay out cause the house had had a woodstove installed without a permit
21:32 GuShH I was going to get a din mount ssr but they didn't stock them at either place I went
21:33 rue_mohr the fire wasn't caused by the house with the fireplace
21:33 GuShH they didn't even have small contactors.
21:33 GuShH I only have a 4U DIN box anyway so not a lot of space.
21:33 rue_mohr it was started by the place next door being severly on fire casuse it was a creasote soaked 80- year old machine shop
21:33 GuShH 2 units are used.
21:33 GuShH I should've bought the 8U
21:34 any48321706 hmm, at 1amp ripple, the 10,000ufd cap is 128mv vs the 27,000ufd cap at 35mv , so i guess the 27,000 really are 27,000
21:34 GuShH at such high capacitances you can measure with very little equipment easily
21:35 rue_mohr anyhow, work out the line current and make a 2 phase sinewave inverter with 90 degree offset, variable current outputs
21:35 GuShH timer watch resistor, voltage source and a multimeter comes to mind, for a rough estimate of capacitance
21:35 rue_mohr you take out the run cap and let the inverter generate the offset
21:35 GuShH rue_mohr: it's starting to sound more complicated than it should be :(
21:35 any48321706 i used a 12v transformer, a 10ohm 10w resistor, and a dvm
21:35 rue_mohr its easy cause once you do that, you can do anyhing with the mtoor
21:36 GuShH any48321706: why are you measuring ripple then
21:36 GuShH rue_mohr: I only need on-off though
21:36 rue_mohr oh
21:36 any48321706 caue i was 100% unsure the 27,000 caps really were 27,000
21:36 GuShH and the motor also runs other electronics
21:36 GuShH for the starter of the burner
21:36 rue_mohr I thought you said you had to have variable speed
21:36 GuShH which has two solenoid valves among other things
21:36 rue_mohr why not justuse a contactor?
21:36 GuShH nope, on-off
21:36 GuShH couldn't find small contactors that were din mount
21:36 rue_mohr I put a 24V one in mine
21:36 GuShH they were all 3U
21:37 GuShH plus I'd need a psu, and they don't sell DIN ones here, a transformer just wouldnt' fit
21:37 rue_mohr mine at rated for 10A, shall I ship you one?
21:37 rue_mohr where are you?
21:37 GuShH Argentina, sadly
21:37 GuShH I need to keep looking but I already went to every place I know
21:37 rue_mohr it would take a month to get there
21:37 rue_mohr I can sell you a peice of din rail with it
21:38 rue_mohr $7 with din rail
21:38 rue_mohr + shipping
21:38 GuShH I have a din box
21:38 rue_mohr which is prolly $10 now
21:38 GuShH I don't want to install things outside of it
21:38 GuShH I could go and get the 8U and use this 4U one for another project, but I hate to waste money
21:38 rue_mohr its a din relay
21:39 rue_mohr wait, racks are measured in U why are you measuring a din rail in U?
21:39 GuShH because the boxes can accomodate x units of DIN mount devices
21:39 GuShH for instance 1 uni-polar breaker is 1 unit
21:39 rue_mohr din device have U widths?
21:39 GuShH the box accomodates 4 of these, or two bipolars, for example
21:40 rue_mohr thatsa a small box
21:40 GuShH it is. it's also a small hole on the wall.
21:40 GuShH I got surface mount anyway.
21:40 rue_mohr whyy not just get a descent box and screw a din rail into the back
21:40 GuShH these boxes already come with the rail and they come in multiple sizes, but I had the idea of buying all din mount devices and 4 was enough for this thing
21:41 rue_mohr obviously not
21:41 GuShH it's a wide box though, theres enough space left for a board and an smps
21:41 ShH should get a pic
21:42 rue_mohr so what I hear is this: what you bought will work but its not working, you cant get shold of the only parts you will accept using
21:43 GuShH rue_mohr: Not the electrician type and I wasn't planning on expanding the circuit, so what I got was ideal, until the point where I couldn't find the rest of the components... so I guess I should've bought a bigger box, knowing I live in a shitty country.
21:43 rue_mohr you did it backwards then
21:43 rue_mohr get the contents based on whats available then buy the box
21:44 GuShH Meh
21:44 GuShH I had the BOM, I just couldn't source the parts.
21:44 rue_mohr newb engineer problem
21:44 GuShH More like guy living in Argentina problem.
21:44 GuShH And not wanting to spend twice as much on the bigger box.
21:45 GuShH for no good reason
21:45 rue_mohr design it based on the parts you can get, not what you learned about using from past experiance
21:45 GuShH I don't want to make a kludge out of random spare parts.
21:45 GuShH Might as well leave it as it is.
21:46 rue_mohr kat is good at finding cheap things on ebay, dont ask her to find what you need.
21:46 GuShH kat hates me anyway
21:46 rue_mohr your a percectionist engineer, not building things cause you cant do it in a way you see as ideal
21:46 rue_mohr its like an artists who never paints anything cause they reject all available paint
21:47 ShH refuses to bend
21:47 rue_mohr exactly, cross your arms, stand there and say the problem is unsolvable
21:48 GuShH Sounds like a plan
21:48 rue_mohr but come up with an excuse for people when a 12yera-old comes along and does it in 20 mins.
21:48 GuShH And then theres a fire.
21:48 rue_mohr people dont see that
21:48 GuShH You know how many retards call themselves electricians here? And the kind of shit they do?
21:48 rue_mohr they see a kid just got it working so he must be a genious
21:49 GuShH This is all about making it safe, not making it just-work-with-what-I've-got
21:49 rue_mohr it can be both if you try
21:49 GuShH Just because it goes inside a box doesn't mean it has to be ugly either.
21:50 GuShH I would use triacs but I don't like them at all
21:50 rue_mohr !assist heatplant
21:50 tobbor Possibly http://eds.dyndns.org/~ircjunk/heatplant
21:50 GuShH rue_mohr: I'm too picky that's all
21:50 rue_mohr !assist projects/heatplant
21:50 tobbor Possibly http://eds.dyndns.org/~ircjunk/projects/heatplant
21:51 rue_mohr your pickeyness will cause you to not get more experiance, and that will cause you to not learn new ways to solve problems, and a lack of cascaded solutions will make a lot of problems out of your reach
21:51 rue_mohr http://eds.dyndns.org/~ircjunk/projects/heatplant/dscn0163_relaybox.jpg
21:51 rue_mohr those are the contactors I have
21:51 GuShH that's massive
21:51 rue_mohr no
21:51 GuShH it is.
21:52 rue_mohr no thats pretty small
21:52 GuShH for what?
21:52 rue_mohr I havn'tput in the HV barrier yet :D
21:52 rue_mohr it operates my wood fired boiler system
21:52 GuShH why do you need so many control lines
21:53 rue_mohr that only 16
21:53 GuShH "only"
21:53 rue_mohr yes
21:53 ShH eyer
21:53 GuShH And I need 2, do you see the difference in scale?
21:53 GuShH Massive, small.
21:54 rue_mohr http://eds.dyndns.org/~ircjunk/projects/heatplant/p1020825.jpg
21:54 GuShH it may not be massive compared to an industrial system.
21:54 rue_mohr I have a DC draft fan, thats the variable dc controller for it
21:54 rue_mohr 'normal' is a 3' wide by 8' tall cabinet full
21:54 rue_mohr big is 3 cabinets
21:55 rue_mohr massive as a 100' hall of them
21:55 ShH eyerolls some
21:57 rue_mohr http://eds.dyndns.org/~ircjunk/projects/heatplant/p1030404-truckpipe.jpg
21:57 rue_mohr dont make boilers
21:57 rue_mohr http://eds.dyndns.org/~ircjunk/projects/heatplant/p1030477-exchangeR4.jpg
21:57 rue_mohr sealing them is a pain
21:57 ShH used to repair boi
21:58 rue_mohr mmm
21:58 rue_mohr I boiled it once, it survived
21:58 GuShH but the high pressure kind.
21:58 rue_mohr this is just a heating boiler
21:58 GuShH http://sanitech.com/
21:58 rue_mohr the efficiency sucks
21:59 rue_mohr it was a massive surface area improvement and didn't so much for me
21:59 GuShH at 2500PSI you'd know why I'm so careful with most things I do.
21:59 GuShH you don't get a second chance.
21:59 rue_mohr :) different when your throwing wood in
22:00 rue_mohr :) they make nice neat hole right up thru the roof
22:00 GuShH in this case it's just a water heater for the house radiators though.
22:00 rue_mohr http://eds.dyndns.org/~ircjunk/projects/heatplant/p1030705.jpg
22:00 GuShH so I can be less pedantic, but still doesn't mean I want an ugly solution.
22:00 rue_mohr thats worked really well
22:00 GuShH lol
22:01 rue_mohr I REALLY like that I can see the junction
22:01 GuShH and WallCode was born.
22:01 rue_mohr is it good? yes!
22:01 rue_mohr oh that, me and the roommate were discussing his coding chapter challange
22:01 GuShH haha
22:02 rue_mohr the plan is to paint the exhcnager, so I dont care
22:02 rue_mohr http://eds.dyndns.org/~ircjunk/projects/heatplant/p1030727.jpg
22:02 rue_mohr thats the new dc draft motor
22:02 rue_mohr I dont suggest chain, its loud
22:03 rue_mohr RRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrrrrrrrrrRRRRRRRRRRRRRRRRRRRRRRRRRrrrrrrrrrrRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRr
22:03 GuShH going to convert it to belt?
22:03 GuShH could probably adjust tension with washers
22:03 GuShH from the mounting plate
22:04 rue_mohr dunno, the exchainger fault is a problem I need to fix more
22:04 GuShH or with a spacer
22:04 rue_mohr the tension is controlled by that spring sticking out the back
22:04 GuShH I think your weld there is way worse than my first weld
22:04 rue_mohr heh its holding just fine thanks
22:04 GuShH I have a photo somewhere....
22:04 rue_mohr have to get my tig shielding gas
22:05 GuShH no clue where the photos are though, I don't label the images and I don't keep a database either
22:05 rue_mohr first have to close up the shop
22:05 rue_mohr hahah like me
22:05 rue_mohr I have to redo the whole site and its too gawdawefull big now
22:10 GuShH -_-
22:11 rue_shop the shop looks almost empty with 3 of the 4 large robots out
22:14 GuShH rue_shop: this is the tiny box http://gushh.net/tmp/dinbox.jpg which would've been adequate had I found the damn relays. I just realized one of the breakers came with part of the silkscreen off, that's the quality of our shitty industry, which is mostly oem chinese requested with "low quality" checked on at the form.
22:20 furrywolf grrrrr, god damn fucking flakes on craigslist.
22:21 furrywolf got one who sent me an email, please call me, I want to buy it right now. I call him back, he says he's in the middle of something and will call back in 15 minutes. an hour goes by, nothing, I call him back, and leave a message. that was around 2:00. still no answer.
22:23 GuShH furrywolf: oh well maybe he got shot.
22:40 furrywolf meh, put a pepper plant outside a couple days ago, looks like I got some sun scalding. :(
22:47 furrywolf Acronym Name Unpleasantness Stupidity.
22:47 furrywolf grrr, wrong window
22:52 GuShH anus to you too
22:52 furrywolf heh, someone in ##electronics said anus should be an acronym for something
22:53 any48321706 3 new heatsink pics at http://DesignerThinking.com/benchpsu.html#bottom
22:53 rrywolf sits on any48321706's
22:53 any48321706 for furry: DesignerThinking.com/images/benchpsu/DSCF2717m.jpg DesignerThinking.com/images/benchpsu/DSCF2718m.jpg DesignerThinking.com/images/benchpsu/DSCF2720m.jpg
22:54 rrywolf looks at them from any48321706's lap, betting they load a lot faster on her mac
22:54 any48321706 they do!
22:54 any48321706 since they are already on my machine :-)
22:55 furrywolf are you sure they're not only on your machine, since they're 404s?
22:55 any48321706 i am sure they are only on my machne, now that you mention it
22:55 y48321706 turns
22:56 any48321706 they aren't big pics, 88k to 100k bytes
22:56 furrywolf pentium 3 cpu coolers?
22:57 any48321706 i dunno, cheap tho, with fans
22:57 GuShH not enough heatsink for so many power devices, where are your balancing resistors!
22:57 GuShH and what are your thermal numbers!
22:57 any48321706 ok, http://DesignerThinking.com/benchpsu.html#bottom works now
22:58 any48321706 it's PLENTY of heatsink if each transistor isn't throwing so much heat!
22:58 any48321706 and my numbers are 48321706 :-P
22:59 ShH doesn't like guess num
22:59 any48321706 guess numbers?
22:59 GuShH was that a... mot?
22:59 any48321706 yeas, it was
22:59 GuShH maybe I shouldn't talk, otherwise furrywolf will say I'm an ass.
23:01 GuShH any48321706: I reckon at least each secondary is either tapped off at a lower voltage or you wound them with different ratios?
23:01 GuShH to perform "tap switching"
23:01 any48321706 i am calling it an 8 amp supply, but you can see that higher current surges aren't going to blow this psu up
23:01 GuShH and thus reduce waste heat
23:01 any48321706 6 different windings
23:01 GuShH assuming linear regulation
23:01 ShH had a starbucks coffee with a bagel and isn't feeling very
23:02 GuShH in fact every time I drink that crap I feel sleepy
23:02 GuShH any48321706: homemade enclosure?
23:03 furrywolf so don't drink that crap?
23:03 any48321706 yeas
23:03 GuShH I like you already!
23:03 any48321706 who?
23:03 GuShH you?
23:03 furrywolf any48321706: probably you, unlikely to be me. :)
23:03 any48321706 you called me an ass yesterday
23:03 GuShH and?
23:04 any48321706 today you like me?
23:04 GuShH any48321706: I jokingly said "asshole!"
23:04 any48321706 o
23:04 GuShH any48321706: because you pretty much made me walk outside -freezing cold- to check on orange trees.
23:05 any48321706 you could have done it the next time the sun was up
23:05 GuShH I don't work like that.
23:06 GuShH any48321706: also theres a difference with people who makes things and those who don't, I tend to dislike the latter.
23:06 any48321706 i cannot help but make things
23:08 rrywolf curls up, making any48321706 warmer and covered in loose
23:08 GuShH any48321706: although I thought you had a more complex design
23:09 any48321706 it may be up to your standards when it's done
23:09 GuShH I can picture it done.
23:10 any48321706 with the cables plugged int he front?
23:10 GuShH and the 7 segments lit up, sure
23:11 GuShH any48321706: what are you using / going to use to drive 'em?
23:11 GuShH random uC and a transistor array?
23:12 GuShH I'm using a 2 digit module for my current project, would've used 4 digits but this is all I got with serial interface (don't feel like making one from scratch, or buying and waiting weeks to get one)
23:13 any48321706 drive the TIP35/35 , driven with TIP102/107 , driven with a couple to-92, and a TL084
23:13 GuShH setup as an error amp?
23:14 GuShH Anyway my readout is the product of interpolation, so it's not a real number. (working on digital esr meter) I don't think I would benefit from extra digits, seeing as how I don't have a good way of calibrating the unit anyway
23:14 any48321706 i was going to use TIP41/42 instead of the 102/107 , but i want those two trasistors to be able to make 2amps of base current to the TIP35/36 pairs
23:17 any48321706 for esr, all you need is 1 digit, if it's over an ohm , it's bad, if it's 8 ohms, it's 8x as bad
23:18 any48321706 my 27,000u caps computed to be 0.035 ohms at 1 amp
23:19 any48321706 if they read an ohm, i'd likely toss them, they'd explode in a few minutes with 8amps ripple on them
23:20 any48321706 so one digit, installed upside down, can read .1 ohm up to 9 ohms
23:20 any48321706 2 digits can display .01 up to 99
23:21 any48321706 a 99 ohm cap is definitely trash
23:29 GuShH any48321706: or you could use a system similar to analog meters where X1, X10, X100 is used to obtain the actual readout.
23:29 any48321706 true
23:29 GuShH any48321706: irrelevant though, I'm using this because it's got a handy serial interface :P
23:29 any48321706 if .01 to 99 isn't wide or deep enough
23:30 GuShH I can only calibrate it for two digits anyway
23:30 any48321706 .01 to 99 IS only two digits
23:30 ShH doesn't want a 10 digit readout that only has 2 meaningful digits and the rest are t
23:32 any48321706 what you need is variable freq drive , more than you need over 2 digits
23:32 any48321706 i measured these caps at 60hz, the freq of interest, but for audio work i'd want to sweep the freq thru *at least* the audio band
23:36 GuShH any48321706: the esr meter uses an uC to generate the test waveform
23:36 GuShH instead of a fixed oscillator, like everyone seems to be doing
23:45 any48321706 so you WILL have a choice of freqs?
23:49 furrywolf make it run a sweep
23:50 rue_mohr GuShH, interesting coffeetable
23:51 rue_mohr GuShH, that looks like a pretty tight box, esp if your leaving in those breakers
23:51 rue_mohr if you just want on/off control you could prolly use a solid state relay from a photocopier
23:52 rue_mohr not din , but pretty tuff
23:53 rue_mohr SPEAKING OF WHICH I NEED TO COME UP WITH SOMETHING TO TURN THE ROOM LIGHTS OFF FROM MY COMPUTER
23:53 Tom_itx ok, new heatsink all milled
23:53 Tom_itx still need to drill the mounting holes for it
23:53 rue_mohr cause I REALLY dont want to get out of my chair to go over there to turn the lights off
23:53 rue_mohr Tom_itx, lets see!
23:53 Tom_itx not tonight
23:53 rue_mohr how big did the heatsinks come out?
23:54 Tom_itx i'm heading to sleep
23:54 rue_mohr 6"x12" ?
23:54 Tom_itx 11.5 x 3.5 maybe
23:54 y48321706 points Tom to her heatsink
23:54 rue_mohr I was up till 1am yesterday, I'm cocerned
23:54 rue_mohr I thought you already had all the modules mounted to it
23:54 Tom_itx i did
23:54 any48321706 http://DesignerThinking.com/benchpsu.html#bottom
23:54 Tom_itx i'm making a smaller one to mount to the box i'm getting
23:55 Tom_itx i'll keep the old one for something
23:55 Tom_itx i cut 4 fins off the width of the original one which still overlaps the drivers by a fin or so
23:55 Tom_itx the new software makes milling easier too
23:55 Tom_itx quicker to get stuff done
23:55 any48321706 mine are 70x50x25 mm
23:56 Tom_itx i'll get pics tomorrow
23:56 Tom_itx the box should be here then too
23:57 Tom_itx kat those look nice
23:57 Tom_itx did you make them?
23:58 Tom_itx anyway.. i'm off to sleep
23:59 GuShH Tom_itx: some worker in china did, by pressing a button on the extrusion machine