#robotics Logs

Feb 18 2012

00:00 jadew oh
00:00 jadew well, having a grounded load has proven to be more difficult than I expected
00:00 Triffid_Hunter jadew: if you see the equiv. schem, the input LTP is referenced to VDD, need one referenced to VSS
00:02 Triffid_Hunter jadew: LPV511 is one example although it's only rated to 12v
00:04 Triffid_Hunter jadew: looks like the term to search for on ti.com is 'RRIO' - rail-to-rail input and output
00:04 jadew I'm actually considering using the low side sense thingie atm
00:05 jadew doing it properly seems to introduce a lot of errors and stuff I can't account for at my current skill
00:06 Triffid_Hunter jadew: LM8262 another example
00:06 Triffid_Hunter jadew: there will always be errors. you have to choose how much complexity you're willing to go to to reduce it
00:06 jadew can't make it too complex, because I also want to understand it
00:07 jadew so I can compensate for those errors
00:07 Triffid_Hunter jadew: then use the circuit rue posted, make R4 slightly adjustable to compensate and use a proper RRIO op-amp
00:08 jadew will have to play with it a bit more
00:08 Triffid_Hunter jadew: I'd use a 910 or 960 ohm for R4 then add a 100r potentiometer in series so you can adjust it from 960 to 1040 or so
00:09 jadew I noticed another little problem tho, the error doesn't seem to be linear
00:09 Triffid_Hunter jadew: resistors only have limited precision, 1% is easy to get but if you want better than 1% tolerance you will need to add a fine tuner somewhere
00:10 Triffid_Hunter jadew: how precise do you need the voltage->current mapping to be?
00:10 rue_shop2 http://eds.dyndns.org/~ircjunk/tutorials/elex/cursense/main.html
00:10 jadew well, I don't care that much about the voltage -> current accuracy, cuz I can compensate for that, but I need it to be constant
00:11 Triffid_Hunter jadew: if you want to skip the error caused by driving the transistor, then you'll want to switch Q1 and R1 around, then put a full instrumentation amp on R1
00:11 jadew like 0.1V should have the same error as 1V
00:12 jadew hah, nice sense resistor rue
00:12 rue_shop2 :)
00:12 rue_shop2 I needed one I could put in series with a computers 5 and 12V to know the draw
00:12 Triffid_Hunter I've seen a 1mR sense resistor in a massive solar setup at one place, looked like they had 5 fat pencil leads between two copper blocks
00:16 Triffid_Hunter jadew: so as you may be noticing, electronics is about choosing your appropriate compromise. that's why there's 1000 different op-amps instead of one that does everything well :)
00:17 jadew yeah, it looks like it
00:21 jadew so before I go ahead and use the more complex circuit, would this one cause any problems? http://imagebin.org/199511
00:21 jadew knowing that the other circuit has a different power source
00:22 jadew my gut feeling says it shouldn't, but I'm not entirely sure
00:22 jadew technically, there shouldn't be any current flowing from one ground to the other if I'm using 2 different transformers to power each circuit, correct?
00:24 Triffid_Hunter jadew: yeah it'll be fine
00:25 jadew thanks, not carved in stone, but I'll probably end up using this one, unless by the time I start building the power source I fully understand the other one
00:27 Triffid_Hunter jadew: the other one basically requires understanding of current being the signal rather than voltage
00:27 Triffid_Hunter jadew: at the high side, it takes the sense voltage and creates a current that matches. this current is fed to R4 which changes it back to a voltage so your primary op-amp can drive the transistor appropriately
00:31 jadew ah ha
00:31 jadew I get it now
00:32 rue_shop2 hahah after all that
00:33 jadew I'm doing my best
00:33 jadew sorry to bother you guys so much
00:34 rue_shop2 we need soemthing to keep us thinking
00:35 jadew I find this "design your own power source" a great learning experience
00:36 jadew altho I didn't come up with that circuit, at least I should understand it
00:41 rue_more I find it funny you used a gnd ref after all that
00:42 jadew I didn't yet
00:42 jadew just considering it
00:42 jadew it was my first option, but didn't like the rsense being between load and gnd
00:42 jadew I still don't
00:42 rue_more want to know a funny relativity trick?
00:42 jadew sure
00:42 rue_more move the system ground to the load ground
00:42 rue_more but dont change wehre the op-amp power is from
00:43 rue_more then your load ground IS ground
00:43 jadew hmm
00:43 rue_more but your - of the power is your feedback current signal
00:43 rue_more its just a difference of where the ground hits the case
00:43 jadew interresting
00:46 rue_more I once saw a sub that, instead of driving the speaker with the power transistors
00:47 rue_more it drove the offset of the power supply
00:47 rue_more I was completely unable to comprehend what they did
00:49 rue_more !assist robots/arm5/p1030863.jpg
00:49 tobbor Possibly http://eds.dyndns.org/~ircjunk/robots/arm5/p1030863.jpg
00:49 rue_more rotary base
00:51 rue_more !assist robots/buddy_III/p1030860.jpg
00:51 tobbor Possibly http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1030860.jpg
00:51 rue_more http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1030861.jpg
00:52 rue_more new li-ion battery packs for the hexapod
00:52 Triffid_Hunter rue_more: heh I've seen some crazy stuff too, like an op-amp based amplifier with power assist transistors hooked into the op-amp's power supply lines as if it was a linear reg or something!
00:52 rue_more 8 of them in total
00:53 rue_more Triffid_Hunter, maybe thats what they were doing, I was confused when both power supply rails seemed to go to the speaker
00:53 rue_more and the driver transistors went to the power supply
00:54 rue_more I suppose they weren't worried about the capacitive coupling in the power supply transformers...
00:54 e_more sh
00:55 rue_more I put an led for each cell
00:55 rue_more but... they will be in parallels of 8, so I'm not too sure what I'm gonna do with the leds
00:56 rue_more right now the charger uses it to tell you what cell its charging
00:57 rue_more Tom_itx, I tested the input system for class tommorow, I can be sure its gonna work :)
00:58 rue_more no 'instructor blew half a class trying to figure out why the lab circuit dosn't work'
00:58 rue_more (I'd marked the wrong pin as common on the motor driver)
00:59 rue_more sat there for 20 mins swapping phase inputs and scratching my head
01:00 rue_more I dont know why I keep the linear supplies around
01:00 rue_more I"m sure I have enough switching supplies to go around now
01:02 rue_more wonder how heavy buddy will end up being
01:02 rue_more http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1020058.jpg
01:02 rue_more cant remmeber the last weighing
01:06 rue_more wonder if the hip should have a assist spring on it
01:07 rue_more amazing what you can do with $40 eh?
01:13 peepsalot tantallus?
01:13 peepsalot oops, wrong channel
01:14 rue_bed no, tantalum
02:20 ball hello hackkitten
21:08 dumbass squirrels, want some less active ones?
21:08 rue_mohr pass, thanks
21:09 dumbass i have one window ac unit that passes from inside to the outside, and the 3 inch gap tween the wood structure and the poured concrete
21:10 rue_mohr 3 inches as in exactly the width of 2 2x4?
21:10 dumbass being the neighbors would not let me work on my house, the south wall is unsecured, and squirrels moved into that gap, settin up housekeeping on the ac
21:10 dumbass no, 2x4 is 1.75x3.5
21:10 rue_mohr ah
21:11 rue_mohr the house automation comuter got confused, brb
21:11 dumbass they chewed a 8" dia hole into the wall too
21:12 rue_mohr ok everything is back to normal, I think
21:12 dumbass luckily, it was the skinny separately-framed "wall" for the window opening, being there's no wndow there, so once in that wall they couldn't roam thru the rest of the real actual wall
21:12 Tom_itx will the real katsmeow please come forward
21:13 rue_mohr heh
21:13 katsmeow i still didn't get op
21:13 Tom_itx seriously.. you caught me off guard this time and i didn't know it was you
21:13 katsmeow d
21:13 katsmeow o
21:16 katsmeow .
21:18 katsmeow well, see what happened, you got me to be katsmeow, and the entire room stopped talking
21:18 Tom_itx but but but..
21:19 katsmeow In 1910, Teddy Roosevelt said that "civilized people should be able to dispose of sewage in a better way than by putting it in the drinking water."
21:19 Tom_itx you'd think so
21:22 rue_shop cool
21:22 rue_shop I think I can totally use these for an smt station
21:22 rue_shop the thermal fuse in them is at 140c
21:22 katsmeow fues take too long to reset
21:23 rue_shop 175W over a3.5"x4" area
21:23 rue_shop these ones take infinitly long to reset
21:23 rue_shop but I think In only want about 200c
21:23 katsmeow Consider that every time a toilet flushes in Los Angeles, as much as six gallons of water is sent to a waste-water treatment plant, and then dumped, unceremoniously, into the Pacific Ocean. We should stop this insanity, there should be ceremonies!
21:23 rue_shop they are to preheat the board
21:23 rue_shop then you hit the top with hot air to boost the area you want up to flow temp
21:24 tsmeow hands rue 300 9"x12" boards to practice
21:26 e_shop slides down in his
21:38 Tom_itx ping
21:43 katsmeow pong
21:50 rue_shop thwang
21:50 katsmeow plink
21:51 Tom_itx ok so now what?
21:51 rue_shop tick tick tick tick pop tick tick tick tick tick pop pop
21:51 Tom_itx maybe i'll desolder this qfn
21:51 rue_shop hmm
21:51 rue_shop the default thermostat only takes it to 160c
21:52 rue_shop its got a temp sensor built in tho, so thats cool
21:53 Tom_itx what are you working on now?
21:53 Tom_itx you got temp sensors stuck all over the place there
21:55 rue_shop I'm playing with that hair iron
21:55 rue_shop see what it goes by default
21:55 rue_shop then see if I can get it to 200c
21:55 rue_shop for preheating boards
21:55 katsmeow someone bought 300 512kx8 drams on ebay for 99 cents ($18 s&h)
21:55 katsmeow wasn't me
21:55 rue_shop have you seen the smt stations that heat under th board?
21:55 Tom_itx no
21:56 Tom_itx haven't really looked
21:56 Tom_itx i've done it though
21:56 Tom_itx with a clothes iron
21:56 Tom_itx and that's how i'm gonna desolder this qfn
21:56 rue_shop the official ones have a hotplate they hold the board over, and a hot air gunt hat pushes the work area over the melting point
22:01 rue_shop hmm they ran the ac to the element thru a diode
22:01 rue_shop its not gonna get too hot doing that
22:09 rue_mohr hmm
22:10 rue_mohr so, if this op-amp circuit works when I power the amp from 0 to 12V, with 5V as the 'ground' and it works, then I should be ok
22:10 Tom_itx rue_mohr did you engage the power on my ass magnet?
22:10 Tom_itx i can't seem to move now
22:10 rue_mohr mines getting stuck too
22:11 katsmeow at least i have a reason to stay put
22:12 katsmeow rue, on that scheme, be very carefull you don't have 5v going into an input withhout the 12v being present first
22:12 rue_mohr heal kat, heal
22:12 tsmeow sits by rue's heel, and ite
22:12 Tom_itx what happened to kat?
22:12 Tom_itx not heel
22:12 Tom_itx heal
22:13 rue_mohr I assemble all my circuits with the power on, so thats not a problem :)
22:13 katsmeow Tom, permanent tback injury flared up again
22:13 Tom_itx aww that's not good
22:14 Tom_itx because of the move?
22:14 e_mohr mumbles about 5x10 plates of 3/4" s
22:14 katsmeow yeas
22:15 katsmeow rue, would you believe it as beczuse of the shopvac?
22:15 rue_mohr you do things in the state your in that I dont think I could do on a good day
22:15 katsmeow as i set it down on the truck, i felt the damage, and inside 2 minutes, i was laying down and immobile
22:16 katsmeow and i was in tears
22:16 rue_mohr how long does it usually take to establish a reasonable regeneration
22:16 rue_mohr 2 weeks +-?
22:16 Tom_itx you don't screw your back up and jump for joy the next day
22:18 katsmeow rue, i am incapable of lifting more than a 2liter bottle, and haveto do that up next to my body,, i can barely tilt it up to drink from it, it hurts too much
22:18 katsmeow i am not lifting my wrists off the table as i type now
22:18 rue_mohr I think I'v been close to that with my pinched nerve
22:19 rue_mohr the doctor was like "I DONT KNOW!!!! I JUST LISTEN TO LITTLE OLD LADIES STORRIES AND ISSUE THEM PILLS!"
22:19 rue_mohr not quite literally but close
22:19 katsmeow doctors generally suck
22:19 Tom_itx especially now days
22:19 rue_mohr yea, after 4 of them and a specialist I gave up
22:19 katsmeow down here they will not prescribe pain meds because fear of junkies and lawsuits
22:20 katsmeow after several MRI at $1200/pop, they say they need to operate, but no pain meds
22:21 Tom_itx 1200 was cheap
22:21 Tom_itx iirc i paid upwards of 2500
22:22 katsmeow this was back ~1986
22:22 Tom_itx err maybe that was a cat scan
22:22 Tom_itx however it's spelled
22:22 katsmeow cat scans are cheaper
22:22 katsmeow computer aided tomography
22:22 Tom_itx it was still alot
22:22 Tom_itx i got the cd here somewhere
22:25 katsmeow wow, this is a complicated political/sex/hipocrisy story : http://www.huffingtonpost.com/2012/02/18/paul-babeu-mitt-romney_n_1286531.html?ref=mostpopular
22:26 katsmeow http://www.huffingtonpost.com/2012/02/18/paul-babeu-arizona-sheriff-gay-immigration-scandal_n_1286353.html?1329592002
22:26 katsmeow i wondr what Romney will do now
22:27 rue_mohr katsmeow, your name is back! yay!
22:27 katsmeow an hour agao, rue
22:27 rue_mohr katsmeow, is the back problem a torn muscle or a disk failure?
22:27 katsmeow yeas, x3
22:28 rue_mohr three disks and muscles?
22:28 Tom_itx that's the vertibrae number i think
22:28 Tom_itx or disk
22:28 Tom_itx or something
22:29 Tom_itx or maybe she'll correct my ignorance
22:29 katsmeow 2 squashed buldging disks, 1 squashed completely disk (3 total), and torn muscles
22:29 katsmeow L3, L4, T10
22:29 rue_mohr http://www.highlandchiro.com/images/spinal_chart.jpg
22:29 rue_mohr dear god
22:30 katsmeow you prayng?
22:30 rue_mohr hell no
22:30 rue_mohr does it help if your stretched a bit?
22:31 Tom_itx probably not if they're enflamed
22:31 Tom_itx and smashed
22:31 katsmeow periodically, after stretching some
22:31 rue_mohr hang on poles under your arms?
22:32 Tom_itx how can i get mirc to default to ff when i click?
22:32 rue_mohr whats the anti-inflamitory pain killer?
22:32 katsmeow that's the wrong curve, rue
22:32 katsmeow make ff your default browser, i think
22:32 katsmeow ibuprofen
22:32 rue_mohr I'd think that taking compression pressure off the spine would help
22:32 katsmeow there's others
22:32 Tom_itx rue, they make water bags you can hang on a pulley and strap under your armpits to stretch it
22:32 rue_mohr tno the simeple one, either advil or asprin
22:32 Tom_itx you can adjust them by the amount of water you put in
22:33 Tom_itx katsmeow, i think i did that but it still brings up ie
22:33 rue_mohr did you reboot?
22:33 katsmeow problem is a pure str-8 up pull kinks it worse, i need a top-of-hip-tilt-back while pull flightly forwards
22:33 katsmeow forwards and up
22:33 rue_mohr did you burna cup of epson salts over the processor in a small metal cup?
22:34 Tom_itx it says it's default
22:34 rue_mohr katsmeow, complex
22:34 katsmeow epsom = magnesium chloride?
22:34 rue_mohr the epson was meant for tom
22:34 Tom_itx not sure, but you can drink it
22:34 Tom_itx ewww
22:35 rue_mohr I'z suggesting he use voodoo for fixing windows
22:36 rue_mohr http://www.youtube.com/watch?v=DMsjCG09gmQ
22:36 rue_mohr voodoo technology
22:37 katsmeow Tom i use a very old mirc, because upgrading breaks scripts, so i dunno how to set up the new ones
22:37 Tom_itx 6.03
22:38 katsmeow 5.51
22:40 katsmeow http://forums.mozillazine.org/viewtopic.php?f=7&t=65189
22:40 katsmeow Posted March 29th, 2004, 7:07 am
22:40 katsmeow Update your mIRC.
22:40 katsmeow Some older versions default to IE, no matter what your default browser is.
22:41 Tom_itx mmm
22:41 katsmeow mIRC looks in the classes section in the registry for http settings and launches using ShellExecute or DDE based on the executable/DDE topic in the http definition.
22:41 rue_mohr Tom_itx, rename iexplore.exe to iexplode.exe and it will prolly find ff
22:41 Tom_itx hah
22:41 rue_mohr I'm serious
22:41 rue_mohr :)
22:42 Tom_itx i'm sure you are
22:42 Tom_itx ok i wonder if i can get this chip off without screwing up the rest of the board
22:44 m_itx turns the iron on 'sco
22:45 rue_shop hehe
22:45 e_shop sits over a breadboard with an upside down TL074 on it and worries about the septic sy
22:46 rue_shop stupid nit who did the power rails upside down on 14 pin opamps
22:46 katsmeow will a TL074 embedded in your rear stop you from usng the septic system?
22:46 rue_shop na
22:47 rue_shop I also want to build a RF vco
22:47 rue_shop I tore open a vcr tuner and I think I found the varicaps, there are 4
22:47 Tom_itx i think i'll try re reflowing it first
22:47 rue_shop one int eh antenna tuner, 2 in a bandpass, and 1 in a local osc
22:48 rue_shop which got me thinking, why not just pull the local osc and use it direct
22:48 katsmeow there's some 2ghz vco chips on ebay atm
22:48 e_shop chats "voodoo!" to
22:48 rue_shop wow
22:48 rue_shop vcr's sound like they go from 88Mhz to 1.3Ghz
22:48 katsmeow the tv bands, yeas
22:48 rue_shop er soemthing like that
22:49 katsmeow the sound for 88mhz is in the fm band
22:49 rue_shop my tube one goes from 150k to 37M
22:49 katsmeow someone goofed, and thee was too much pressure to NOT fix it
22:49 rue_shop freq gen
22:50 Tom_itx it would sure be nice if this fixed it
22:51 e_shop hands tom an aluminum candle tray and a bottle of icyprople alc
22:51 rue_shop no, its not bga, but I love the voodoo factor
22:52 katsmeow isopropyl
22:53 Tom_itx icyclepropyl
22:53 katsmeow http://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=vco&_sacat=See-All-Categories
22:54 Tom_itx haha hardware recognizes it!!
22:54 katsmeow ?
22:55 katsmeow wow, a olde 74LS624 vco
22:55 Tom_itx haha that fixed it
22:55 Tom_itx just had a short under the chip and reflowing on the iron fixed it
22:55 Tom_itx now i got 3 outta 3 working
22:56 Tom_itx atmega32U4 that is..
22:56 rue_shop kat I'm proud of myself, I was able to take a 33.33Mhz computer clock module, OOK modulate it, modify a 27Mhz toy reciever to pick it up, and transmitt a 555 pulse across the shop
22:57 rue_shop pretty good seeing as rf it so terrible with me
22:57 rue_shop Tom_itx, cool!
22:57 Tom_itx very
22:57 Tom_itx they're like the blue one i sent you
22:57 katsmeow congrats rue
22:57 e_shop
22:58 rue_shop katsmeow, its the first time anything more complex than a crystal osc has worked for me
22:58 katsmeow what's using 33mhz that you might be clobbering, and why not use the 27mhz as is?
22:58 rue_shop dk only sells ONE crystal in the rc-control freq range
22:58 rue_shop 33Mhz is in the middle of a bunch of bands reserved for fast food headsets
22:58 katsmeow but 27mhz xtals are hugely available as usa "cb band"
22:59 rue_shop not from dk!
22:59 katsmeow oh
22:59 rue_shop I was sure they would have 27.145, but no
22:59 rue_shop katsmeow, how are you with rf fm circuits?
23:00 rue_shop cause I dont like OOK
23:00 Tom_itx damn i think i should just relax the rest of the night
23:00 Tom_itx that was way too easy
23:00 katsmeow i dunno OOK
23:01 katsmeow keep in mind that with fm, the carrier is on full power , unless you burp the transmitter yourself
23:01 katsmeow leaving it on will eat power
23:02 katsmeow hmm, odd mod for a Tek scope : http://www.ebay.com/itm/IM-Oscilloscope-5110-VCO-Test-Set-VSC103PR-/180632269466?pt=BI_Analyzers&hash=item2a0e85b29a
23:03 rue_shop on off keying
23:03 rue_shop reciever either gets carrier or static
23:03 katsmeow i woldn't send signal by keying, because your reciever cannot stay on freq track
23:04 katsmeow if you're sending digital data, and wanna use fm, check out pm
23:04 katsmeow phase modulation
23:04 katsmeow your reciever afc can still track it for the duration of the transmission
23:05 rue_shop I know phase modulation
23:05 katsmeow k
23:05 rue_shop I was thinking simple fsk
23:06 katsmeow same thing
23:06 katsmeow fsk != on-off keying tho
23:19 Tom_itx pong
23:20 Tom_itx it's too quiet tonight
23:20 katsmeow ping
23:20 katsmeow should i change my nick back then?
23:20 Tom_itx i keep wondering about my connection since i've had so much router trouble lately
23:20 Tom_itx no
23:21 katsmeow k
23:21 rue_shop thats annoying
23:21 rue_shop power blinks
23:21 rue_shop significant ones
23:22 katsmeow storms south of you rue, are you pulling from the usa grid?
23:23 katsmeow http://images.intellicast.com/WxImages/Radar/tiw.gif
23:29 rue_shop prolly, we apparently dont use our own power cause we can sell it for more than we buy for
23:30 theBear hehe
23:30 katsmeow ebay has a poor selection of *real* back braces
23:30 tsmeow waves at the
23:32 theBear hurro
23:32 theBear 'real' back braces are damned hard to find
23:33 katsmeow step one: if it has velcro anything on it, it's not real
23:33 katsmeow step two: if it's elastic, "moves with you" or "conforms to your body" , it's not real
23:36 theBear i dunno about velco... doctor i saw last year wears 'corsets' for his back, one of them had velco, big fat solid grabby straps tho
23:36 katsmeow velcro works loose as you move tho, it cannot be as tight as you first pul it
23:38 theBear not proper commercial grade fat straps, they're rock solid, they you tear you inhalf without moving
23:38 rue_shop you both need back reconstruction
23:38 theBear they COULD
23:41 katsmeow rue, virtually any attempt to repair my back is 99% likely to leave me in a worse condition right away, plus guarantee more degradation requiring more surgery every 5 years
23:42 theBear i don't need shit, i'm cured
23:42 theBear plus if i did, what kats just said
23:44 katsmeow http://www.ebay.com/itm/OTC-Lumbo-Sacral-Support-Back-Brace-/320851932355?pt=LH_DefaultDomain_0&var=&hash=item76c1b00cdf <<== there's steel or aluminum in those braces
23:46 katsmeow what people don't seem to unnerstand is my body is out of position, it's almost broken,, i need the brace to make my body conform to it, not vice versa
23:46 theBear heh, looks a bit lacy for me
23:47 katsmeow a so-called brace like this: http://www.ebay.com/itm/ELASTIC-POCKET-LUMBOSACRAL-BACK-SUPPORT-BRACE-/280812670360?pt=LH_DefaultDomain_0&var=&hash=item870ec32b22 is worthless, and prolly will CAUSE damage
23:49 theBear yeah, that's a joke.... those shoulder-strap "lifting braces" are largely useless too, even if you don't have an injury
23:49 tsmeow ag
23:50 rue_shop yea, I have to agree their incompitent of repairing biological ....stuffs
23:50 rue_shop none the less, you two need repair
23:51 rue_shop anyhow, my current sense amp works and I'm thrilled
23:51 pnorman katsmeow: I think the local OHS authority actually talks about the worthlessness of those "braces"
23:52 tsmeow
23:52 theBear rue_shop, serious, i'm cured, i'm better than when i met you
23:52 pnorman ah, here it is: http://www.worksafebc.com/publications/health_and_safety/by_topic/assets/pdf/backbelts.pdf
23:54 katsmeow good pdf
23:55 rue_shop its range is +- 2A
23:55 rue_shop output 0-5V
23:56 rue_shop the op-amp pulls 6.4mA that I need to regulate with 78L and 79L
23:56 rue_shop I'll come off the +-24V rails
23:57 rue_shop -5V reg: 6.4mA 19V
23:57 rue_shop +12V reg: 6.4mA 12V
23:57 rue_shop .1W on the -5
23:57 rue_shop .08W on the +12
23:58 rue_shop hmm
23:58 rue_shop can a 79L05 take .1W?
23:58 katsmeow yeas
23:59 katsmeow might take .25w, it's a TO-92
23:59 rue_shop cool
23:59 katsmeow at .25w, fan it
23:59 rue_shop sounds like I should give it a little heatsinking
23:59 rue_shop maybe I'll glue it to the pcb
23:59 rue_shop :)