#avr | Logs for 2013-03-18

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[00:01:08] <Casper> I forgot which one, but it have a build in smps, but unsure of the capability
[00:01:36] <Casper> I think it's a boost, but unsure of the hardware needed around it
[00:03:08] <jadew> pretty nice
[00:05:37] <Casper> it's sad that a joule theif is unregulated
[00:05:46] <Casper> it would have been nice if it had some regulation
[00:06:04] <Casper> like being able to set it for "around 4.5-5V" :D
[00:40:09] <rue_bed> if you dont code it right the variation in irq service times till cause quite a bit of noise in the output
[02:59:18] <megal0maniac> Stupid proxy server doesn't allow anything other than port 80 :/
[02:59:57] <megal0maniac> OndraSter: Uni is fun :)
[02:59:57] <Roklobsta> how is a problem
[03:00:20] <megal0maniac> Roklobsta: http://tom-itx.dyndns.org:81/~webpage/
[03:00:45] <Roklobsta> of course.
[03:00:50] <Roklobsta> that's arse
[03:01:17] <Roklobsta> why doth tom placeth iteth on porteth 81eth?
[03:01:36] <megal0maniac> Because his ISP is a suck.
[03:01:55] <megal0maniac> Just like this proxy server :)
[03:04:35] <Roklobsta> can you use an ssh tunnel?
[03:06:05] <megal0maniac> It goes through a plaintext authenticated squid proxy, and only port 80 is open. I guess I could put ssh on port 80 and try..?
[03:06:28] <megal0maniac> Installed openvpn on my router, just need to get around to setting it up
[03:06:42] <Roklobsta> i'm just saying, ssh to a server you know works and set up a tunnel
[03:07:31] <Roklobsta> so in the end you go to http://localhost:8069 and it will slurp in tom's website.
[03:09:20] <megal0maniac> Lots of this going on: http://i.imgur.com/UeS6MEB.png
[03:12:28] <Roklobsta> http://www.mtu.net/~engstrom/ssh-proxy.php
[03:13:55] <megal0maniac> Ooh! Shiny
[03:14:40] <megal0maniac> Meh cygwin :)
[03:15:05] <Roklobsta> blurgh
[03:15:43] <megal0maniac> I'll put ssh on port 80 when I get home and try tomorrow. Hopefully the proxy is graceful :) If it works, then VPN..
[03:16:09] <Roklobsta> just recursively wget hsi site
[03:17:09] <megal0maniac> Oh, Tom's site. But I don't want to be trapped behind this silly proxy :)
[03:17:37] <megal0maniac> Wireless access point is WEP encrypted (*snigger*)
[08:54:04] <tzanger> damn, adding CAN to avr is a $2 adder for the part
[08:54:31] <tzanger> mind you jumping to qty25 drops the price almost in half
[08:54:46] <creep> hey
[09:08:43] <rue_house> must be digikey
[09:11:50] <rue_house> Tom_itx, ^^ note using port 81 blocked someone else from getting to your site? I'm using 82 and sofar no complaints
[10:54:31] <]Spectre[> Hi,Is it possible to do a transparent ram test with external and internal interrupts enabled ? I don't think so
[10:55:32] <OndraSter> huh?
[10:58:39] <]Spectre[> OndraSter: the question is because inside of interrupts I have to change the value to some ram variables
[10:59:28] <OndraSter> what do you mean with transparent ram test?
[10:59:51] <]Spectre[> a ram test during the runtime
[11:04:12] <OndraSter> why would you do a RAM test?
[11:04:34] <OndraSter> the only RAM test I ever did was when using external bus interface on mega128a
[11:04:39] <OndraSter> to check if there is the external RAM
[11:06:32] <]Spectre[> OndraSter,because I have to follow the EN60730,that requires a transparent ram test
[11:07:06] <]Spectre[> the only problem is to avoid issues during the interrupts
[11:07:38] <]Spectre[> because inside of them the software changes some variables.. so I think that I have to find a good moment to disable the interrupts
[11:08:14] <OndraSter> ah, en60730
[11:08:22] <OndraSter> can't you just run it ... when it starts up?
[11:08:25] <OndraSter> (I haven't read whole info)
[11:08:31] <OndraSter> then run it like... in 4 in the night :P
[11:08:33] <OndraSter> reboot whole device?
[11:09:13] <]Spectre[> Sadly No Ondraster,it's mandatory that I do a transparent ram test during runtime for the application... :(
[11:09:27] <]Spectre[> I already do a ram test at boot-up time
[11:09:30] <OndraSter> ah
[11:09:38] <]Spectre[> but it's not enough ... :(
[11:10:43] <]Spectre[> The only way is to disable the interrupts.. I don't have other ways... or to do a check byte by byte inside of a non-nested interrupt..
[11:22:50] <]Spectre[> OndraSter: see you next time
[14:42:43] <abcminiuser> SCIENCE
[14:43:11] <RikusW> what about science ?
[14:43:50] <abcminiuser> https://github.com/abcminiuser/lufa/commit/eef8bd7efd6dc839b5bb0a6aa5237721e8deb03e
[14:46:59] <nickjohnson> Hi. I'm having trouble getting an interrupt to wake my ATTiny4313 from power down mode. I don't need an ISR to run, I just want it to wake the AVR.
[14:47:42] <creep> Casper<< well smps can be done using a microcontroller, but it is still better to only control some external pwm modulator
[14:47:52] <nickjohnson> I'm currently setting the INT0 bit in GIMSK, then calling set_sleep_mode(SLEEP_MODE_PWR_DOWN); sleep_enable(); sei(); sleep_cpu(); - what am I missing?
[14:47:54] <abcminiuser> Which interrupt? There's a table in the datasheet that lists what sleep modes can be woken up by what sources
[14:48:00] <abcminiuser> Ah
[14:48:15] <nickjohnson> abcminiuser: Right. It's INT0, using the default of triggering on logic low, which as far as I can tell should work.
[14:48:38] <RikusW> nickjohnson: did you provide a handler ?
[14:48:57] <nickjohnson> RikusW: I don't actually need anything to run, but I tried providing an empty one anyway, just in case. No change.
[14:48:59] <RikusW> aka ISR
[14:49:13] <RikusW> without an empty one the avr will reset...
[14:49:33] <RikusW> afaik thats the default behaviour of gcc
[14:50:01] <abcminiuser> nickjohnson, that should work, so RikusW is probably on the money
[14:50:38] <nickjohnson> As I said, I created an empty one just in case
[14:50:46] <nickjohnson> It definitely wasn't resetting in either case, though
[14:51:19] <nickjohnson> Here's what should be the relevant bits only: https://gist.github.com/anonymous/5190161
[14:52:26] <RikusW> nickjohnson: 2. For INT0, only level interrupt.
[14:52:30] <RikusW> during sleep that is
[14:52:39] <RikusW> not pin change
[14:52:43] <nickjohnson> RikusW: Right, which is why it's set to interrupt on low.
[14:53:45] <RikusW> use the serial port for debug messages and try some other interrupt sources to se if those work
[14:55:06] <nickjohnson> I don't have a serial port :)
[14:55:08] <RikusW> nickjohnson: is your WDT on or off ?
[14:55:17] <nickjohnson> RikusW: I haven't touched it, so presumably off.
[14:55:18] <RikusW> t4313 should have one
[14:55:28] <nickjohnson> Yes, but it's connected up to something else.
[15:13:06] <nickjohnson> Ah. I think I may have damaged the GPIO pin for INT0 somehow
[15:13:26] <nickjohnson> When set as an input with no pullup, it seems to be shorted to GND, weirdly
[15:14:38] <Casper> creep: can be done do not mean it's a good idea :D
[15:14:48] <Casper> specially for a fast load change
[15:15:07] <creep> Casper<< current mode control will not work ofc ;)
[15:15:18] <creep> but you can simulate a TL494...
[15:15:44] <creep> but still, a glitch and transistors explode
[15:15:51] <Casper> yup
[15:15:59] <Casper> can be good however for battery charging
[15:18:06] <creep> or checking out how does lithium burn underwater :)
[15:48:24] <Casper> creep: are you good with smps? :D
[15:48:58] <creep> Casper<< i started with power supplies 15 years ago
[15:50:50] <Casper> that dosen'T say if you are good with smps or only linear :D
[15:51:33] <creep> ^^ well ok
[15:52:31] <creep> both can be complicated
[15:52:34] <Casper> basically, I'm planning to buy or make a DC ups with regulated 12V output... sadly, the only solution I found is some stuff from mini-box.com..... but... I doubt it's good quality
[15:52:46] <Casper> so I wonder if you have an idea for an efficient one
[15:53:13] <Casper> and also, if you know how to mod an ATX psu to add current limiting, so it can charge battery :D
[15:53:29] <creep> i have about 20kg of A4 papers laying around with my drawings ;/
[15:53:38] <creep> i should start copy them onto computer
[15:54:52] <RikusW> creep: I think I have a bit less than 20kg ;)
[15:55:21] <creep> i hate papers ;/
[15:55:32] <creep> and searching them ...
[15:55:38] <RikusW> Casper: be carefull when interfering with the ATX smps feedback loop...
[15:56:03] <Casper> all I succeded to do is make it hiss
[15:56:11] <Casper> and smoke the 3.3V :D
[15:56:13] <creep> Casper<< i did hack some it power supplies for fun
[15:56:21] <creep> AT
[15:56:24] <Casper> which I planned to remove anyway
[15:56:50] <creep> the most you can get out from them is about 13.8V @ 5A, some can even handle 10A
[15:56:53] <RikusW> Casper: which control IC is in there ? a 494 one ?
[15:57:04] <Casper> no
[15:57:12] <Casper> that active power factor correction one
[15:57:23] <creep> Casper<< the problem is backfeeding it with your battery :)
[15:57:51] <Casper> that dosen'T seems to be an issue actually
[15:58:04] <creep> if it makes it explode then it might
[15:58:19] <Casper> the IC is on the hot side
[15:58:25] <creep> no
[15:58:28] <Casper> it use optocoupler feedback
[15:58:42] <creep> the iC runs off the secondary
[15:58:47] <Casper> not that one
[15:59:08] <RikusW> Casper: there should be an IC on the cold side too
[15:59:28] <Casper> only used for over/under current/voltage
[16:00:01] <Casper> bypassed by a wire :D
[16:00:16] <creep> Casper<< remove the feedback loop, set one error amplifier to voltage regulation at 13.8V, set the other to current regulation, and install a 0.1 ohm 10W resistor for current sensing
[16:00:37] <Casper> it's not a tl494
[16:00:44] <Casper> it have a single input
[16:00:47] <RikusW> Casper: try using a TL431 for the 12V feedback
[16:00:51] <creep> now you have a 13.8V 5A battery charger
[16:01:08] <Casper> ... more like a 13.8V 40A
[16:01:37] <creep> what is that ? a welding inverter ?
[16:01:52] <Casper> 650W single 12V rail :D
[16:02:00] <Casper> able to deliver like 600W off the 12V
[16:02:27] <creep> that sounds hot
[16:02:35] <Casper> it then split the single rail into 4 current limited rail, via a like 0.001 ohms shunt
[16:02:42] <creep> is there synchronous rectification at the output,
[16:02:43] <creep> ?
[16:02:57] <Casper> which is differentially checked by the protection IC....
[16:02:58] <Casper> no
[16:03:12] <Casper> sadly, it's not... but it does have power factor correction, active too
[16:03:24] <Casper> 80% bronze
[16:03:30] <creep> hm well 40A is like 50W+ dissipation only in the diodes
[16:06:20] <Casper> I wanted to use that one for when I work on my car... to avoid draining the battery in 1 hour...
[16:06:41] <Casper> so it also need to survive cranking without any issue
[16:07:04] <creep> smps without current limit is not cool.
[16:10:22] <jadew> are there any common values for inductors used in SMPS?
[16:11:12] <creep> no.
[16:11:15] <Casper> do you know how to add a proper current limiter to a smps that is tl494 based?
[16:11:18] <creep> why would be ?
[16:11:33] <creep> Casper<< yeah, i just described it above
[16:11:56] <creep> you need a current sensing resistor, and measure voltage drop over it
[16:12:00] <jadew> well, I figured there's usually some values you fallback to
[16:12:12] <jadew> like... for 220 to 5v, you'd need something around X
[16:12:16] <creep> jadew<< that is called an E7 sort for example
[16:12:38] <creep> 100uh 220uh 330uh 470uh 680uh
[16:13:10] <creep> and these are not critical
[16:13:36] <jadew> is it better if the inductor has a higher capacity than the calculated value?
[16:14:02] <creep> a power supply may work from 100kHz to 300kHz... only with different parameters, efficiency
[16:14:04] <krphop> inductors have inductance
[16:14:08] <jadew> like if the calculated value would be 50uH and you'd use 68uH, would that translate to less noise or something?
[16:14:24] <jadew> yeah, higher inductance
[16:14:33] <Casper> creep: no low pass filter?
[16:14:33] <jadew> was thinking about magnetic capacity
[16:14:47] <creep> inductors have capacitance too, but it depends on what you want to use it for...
[16:14:55] <Casper> and don'T that need an "high" voltage?
[16:15:18] <creep> Casper<< what are you talking about now ?
[16:15:34] <Casper> the current sense
[16:15:47] <Casper> for it to be effective and not too much noisy?
[16:15:58] <creep> 0.5V is fine
[16:16:15] <creep> 5A @ 0.1 ohm will give 0.5V
[16:16:39] <creep> less would work, i just used this
[16:17:10] <Casper> 40A@0.5V = lots of heat
[16:17:50] <creep> oh that is another question
[16:18:48] <creep> give that 100mV max.
[16:19:24] <Casper> but then, don't you have to use an opamp to make it closer to the 2.5V reference?
[16:19:40] <creep> it depends on what you want to do
[16:19:53] <creep> i see i was doing this
[16:19:57] <creep> *2 way
[16:20:15] <creep> 1: multiply up your current sense voltage
[16:20:32] <creep> 2: servo an error signal for control
[16:21:07] <Casper> bbs, food is ready
[16:21:36] <creep> what is the contorl ic?
[16:21:45] <creep> uc3842 ?
[16:23:53] <tzanger> 300kHz is still a pretty low frequency supply these days
[16:24:04] <creep> no it is not
[16:24:16] <creep> that is high.
[16:24:57] <tzanger> hell TI makes 4MHz ones at $2.50 onesie-twosie price
[16:25:06] <creep> oh yes.
[16:25:08] <tzanger> meant for smaller systems where you want your magnetics small
[16:25:22] <creep> will it convert 230VAC to 12V @ 20A ?
[16:25:48] <creep> your igbts will burn easily at 300kHz
[16:26:27] <tzanger> sure, depends on what you're doing. IGBTs you typically run in the dozens of kHz for power appliations since you're gonna have a bigass line reactor on the ass end anyway
[16:27:10] <creep> to tell you something new, there are working dcdc converters opearting at 800MHz
[16:27:21] <creep> i'm not sure you want to build one
[16:27:25] <tzanger> too high and your I2R losses start taking over
[16:27:41] <tzanger> depends, I designed industrial motor controls
[16:27:57] <tzanger> the soft starters were SCR based but the drives were all IGBT backend
[16:28:11] <tzanger> 800MHz really... what kind of application?
[16:28:21] <creep> DCDC conversion
[16:28:26] <tzanger> yes what application
[16:28:33] <creep> unspecified
[16:28:35] <tzanger> why would you have such a high frequency
[16:28:37] <RikusW> creep: what kind of switches ?
[16:28:54] <tzanger> I mean I think 100kHz is *plenty* for 99% of applications
[16:35:14] <creep> i can't locate it now
[16:35:23] <creep> my current tmp dir is 4.2GB ;/
[16:35:58] <creep> i'm sure i mirrored some pdfs
[16:40:39] <creep> seems like my memory starts working
[16:40:40] <creep> http://www.cree.com/~/media/Files/Cree/RF/Papers%20and%20Articles/108A_UHF_Class_E2_DCDC_Converter_using_GaN_HEMTs.pdf
[16:40:50] <creep> A UHF Class E2
[16:40:50] <creep> DC/DC Converter using GaN HEMTs
[16:41:16] <creep> with high Q lumped-element multiharmonic matching networks, a peak efficiency value of 72% has been obtained at 780 MHz with a 10.3 W output power
[16:41:58] <creep> this is the new magic stuff
[16:44:37] <Casper> I'm BAAAACK
[16:45:03] <creep> yo Casper
[16:45:10] <creep> build this will you
[17:29:51] <jadew> this sucks, found some power plugs in one of my component boxes and realized they have round legs. they're only two and were not in a bag
[17:30:34] <jadew> now I don't know where I ordered them from since I got so many different ones over the past year, but they all had flat legs (hard to hand drill an eliptic hole)
[17:31:58] <Casper> easy
[17:32:03] <Casper> drill the 2 ends
[17:32:11] <Casper> then saw off the rest
[17:32:20] <jadew> that's a good idea
[17:32:34] <jadew> still kind of a pita
[17:32:44] <jadew> I'd much rather prefer round legs to begin with
[17:32:50] <jadew> one hole and be done with it
[17:35:32] <nickjohnson> Most footprints just use a really big hole for the lugs
[17:36:50] <jadew> I use a rounded rectangle and I drill it with one of my broken bits and jerk it in there
[17:38:08] <jadew> well at least I know that one of the shopps I'm buying from, has them
[17:38:43] <jadew> don't know why they're not in a labled bag tho
[19:07:44] <jadew> ffs... I bought 3 ADCs a while back, really put my hopes into them for building a nice meter. they were advertised on the site as 3ksps @ 14bit
[19:08:07] <jadew> they're actually 0.003 ksps
[19:12:00] <OndraSter> just get those 24bit from TI
[19:12:02] <OndraSter> samples :P
[19:12:11] <OndraSter> or 31b if you want to go even deeper
[19:12:32] <jadew> I'll try, altho IIRC they're not sending samples to me for some reason
[19:12:44] <jadew> this was a TI chip tho
[19:16:46] <GuShH> jadew: the reason is sample whores are not liked
[19:20:02] <jadew> well, I'm hardly a sample whore, never got any samples from anywhere
[19:20:34] <jadew> I don't see what's wrong in getting free samples tho
[19:20:54] <jadew> getting familiar with a product, even if it's for a one-time use is not exactly against a company's best interrest
[19:30:12] <GuShH> jadew: it's a whole can of worms
[19:30:43] <GuShH> jadew: which ADCs did you get anyway
[19:31:19] <jadew> I got one specifically made for multimeters, TLC7135CN
[19:31:30] <jadew> wish it really had 3ksps as the site said, because otherwise it's perfect
[19:31:56] <GuShH> that's some old shit
[19:32:11] <jadew> yeah, I didn't know that when I got it
[19:34:28] <GuShH> jadew: it's the same IC used in my first digital dmm, it had 2 samples per second
[19:34:34] <GuShH> at very low counts
[19:35:00] <jadew> I got 49 sps @ a 2mhz clock
[19:35:12] <GuShH> 3 sps max, listed
[19:36:02] <OndraSter> SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003
[19:36:03] <OndraSter> ...
[19:36:04] <jadew> I suppose it has to do with the clock
[19:36:48] <jadew> I checked the busy pin with the scope and it was triggering at 49Hz
[19:37:00] <jadew> oh wait.. that's... half
[19:37:06] <OndraSter> should be 50Hz
[19:37:07] <jadew> so maybe 20 sps
[19:37:13] <OndraSter> to match mains frequency
[19:39:10] <GuShH> OndraSter: As I said, first digital dmm had the same IC
[19:39:14] <GuShH> big wide dip
[19:39:19] <OndraSter> :P
[19:39:25] <GuShH> you could overclock it
[19:39:26] <GuShH> but why
[19:39:26] <OndraSter> I was not born in 86
[19:39:39] <GuShH> 87?
[19:39:47] <jadew> he's in the 90's
[19:39:47] <OndraSter> well you would want to run it so it samples on 50 or 60Hz (EU/US)
[19:39:53] <OndraSter> I am from the early 90s indeed
[19:39:57] <OndraSter> like... end of 92 :D
[19:40:00] <GuShH> oh
[19:40:37] <GuShH> yeah it was 2000 counts
[19:42:15] <jadew> what I really need is a meter with 6000 counts and a serial connection
[19:42:25] <GuShH> the integrating cap plays a role too
[19:42:38] <GuShH> jadew: 60 bucks gets you 22000 counts and usb
[19:42:49] <jadew> problem is when I cehck the market for one I keep getting dissapointed with the price/specs ratio and end up looking at benchtop meters
[19:42:57] <jadew> GuShH, which one?
[19:43:02] <GuShH> ut61e I believe
[19:43:08] <GuShH> best of the price class
[19:43:12] <GuShH> otherwise it's over 100 bucks
[19:43:23] <GuShH> and you can't get benchtop specs on these anyway
[19:43:26] <GuShH> different thing
[19:43:55] <jadew> I don't think it's that one, they don't mention the counts but it only has 4 digits on the lcd
[19:44:04] <GuShH> wrong picture dude
[19:44:09] <GuShH> I have it right here
[19:44:32] <jadew> then it sounds really nice
[19:44:33] <GuShH> usb cable is optional, you get a serial one
[19:44:34] <jadew> gonna look for it
[19:44:56] <jadew> does it have a serial connection?
[19:45:03] <jadew> and the usb is a usb-to-serial?
[19:45:18] <GuShH> yes to all
[19:45:21] <GuShH> optical isolated
[19:45:38] <jadew> so the output is an ir led?
[19:45:43] <GuShH> yes
[19:45:47] <jadew> nice
[19:45:55] <jadew> gonna see if I can find it
[19:45:55] <GuShH> no physical connection for proper isolation
[19:46:18] <GuShH> it's a good meter for the price, not awesome but good enough. Still saving up for some flukes
[19:46:18] <jadew> thanks for the recommendation
[19:46:32] <GuShH> jadew: on my site I show how to calibrate the dcv mode also
[19:46:51] <GuShH> the software for the serial interface is pretty bad, I wrote my own library but I never finished it (how uncommon)
[19:47:10] <GuShH> only put-down is the lack of a temperature mode
[19:47:19] <jadew> yeah, I don't care about their software either, I plan to log whatever I need with my own software
[19:47:21] <GuShH> but a temperature to voltage module can fix that
[19:47:24] <GuShH> or temp to freq
[19:47:33] <jadew> I have temp on another one
[19:47:34] <GuShH> jadew: the "protocol" is very simple
[19:47:40] <GuShH> yeah, but logging the temp is useful
[19:47:42] <GuShH> that's what I meant
[19:47:46] <jadew> ah
[19:47:54] <jadew> is the protocol documented?
[19:47:59] <GuShH> so-so
[19:48:05] <GuShH> got a dso?
[19:48:12] <jadew> or judging by the quotes they're just spitting out values?
[19:48:15] <jadew> yeah
[19:48:18] <GuShH> I could dig out the code otherwise, it's on a compressed image of my old HDD (crashed)
[19:48:30] <GuShH> it spits out all the time
[19:48:33] <jadew> no worries, I'm sure I'll figure it out
[19:48:33] <GuShH> the interface is always on
[19:48:48] <jadew> that's cool
[19:49:04] <GuShH> one byte tells you the mode, the other the setting (I think) and then the data
[19:49:44] <jadew> sounds simple enough
[19:49:51] * GuShH never got a working pl serial adapter for his
[19:49:59] <jadew> not that worried about it, I'm sure I'll get it working
[19:50:11] <jadew> pl - the chip?
[19:50:15] <GuShH> yeah
[19:50:29] <GuShH> I could use a buspirate in bridge mode
[19:50:30] <GuShH> but meh
[19:53:33] <GuShH> or... even one of these http://www.ebay.com/itm/New-RS-232-DB9-Serial-Com-Port-to-Express-Card-ExpressCard-34mm-Adapter-/110741589402?pt=UK_Computing_Other_Computing_Networking&hash=item19c8b68d9a
[19:53:38] <GuShH> horrible looking gimmicks
[19:53:57] <GuShH> otoh that means I lose two usb 3.0 ports
[19:54:15] <jadew> you're a laptop guy, eh?
[19:54:19] <GuShH> lately
[19:54:32] <GuShH> desktop had a major psu fault, lost a hdd..
[19:54:35] <GuShH> got fed up with it
[19:54:44] <jadew> I only use my laptop to watch movies before bed, while on vacations
[19:54:53] <GuShH> I need a dock
[19:54:57] <GuShH> I use it as a desktop anyway
[19:55:05] <GuShH> external "everything"
[19:55:23] <GuShH> so, desktop with UPS heh
[19:55:32] <jadew> about the lost hdd, I lost about 4 or 5 in the past 2 years
[19:55:43] <GuShH> only lost one ... ever.
[19:55:46] <GuShH> recovered most of it
[19:55:55] <jadew> I've lost a lot more "ever"
[19:56:09] <GuShH> I've had failures but they were on hdds that I knew were about to die, and contained no important data
[19:56:12] <jadew> but yeah, you generally get the chance to recover it, cuz they don't die instantly in most cases
[19:56:34] <rue_house> jadew, I put anything I wan to keep on software mirrored arrays
[19:57:03] <jadew> rue_house, I keep my work on a raid 1 array (actually one of the hdds died recently)
[19:57:24] <jadew> then the svn server is.. a different pc, so there's a backup in there as well
[19:57:46] <jadew> and I have an automated script on the server that zips, crypts and uploads the svn db to a remote server
[19:57:52] <rue_house> jadew, hardware or software raid?
[19:58:07] <jadew> rue_house, software
[19:58:15] <rue_house> :)
[19:58:21] <GuShH> psu can kill a whole array
[19:58:37] <GuShH> mr smart pants!
[19:58:45] <jadew> still, what are the odds?
[19:58:54] <GuShH> I have the worst luck.
[19:59:07] <GuShH> I mirror all I can
[19:59:08] <jadew> well, you only lost 1, I lost 5 :P
[19:59:09] <rue_house> raid is no reason not to have a backup
[19:59:14] <GuShH> but when you've got several TB of data it's not so simple
[19:59:35] <jadew> luckly my work is code and text files are not that big :)
[19:59:36] <GuShH> I still haven't got a replacement
[19:59:51] <rue_house> geographically distributed raid 10?
[19:59:58] <rue_house> still need backup
[20:00:14] <GuShH> idealistic rue is idealistic
[20:00:26] <GuShH> I don't know about you but I don't shit money.
[20:00:34] <jadew> well, if anything you need backup for a raid so you don't screw up some files
[20:00:35] <GuShH> I'll get a replacement when I can.
[20:00:51] <GuShH> Maybe you grow money?
[20:01:06] <GuShH> I wouldn't be surprised if half the people on freenode were growers, cooks or dealers quite frankly.
[20:01:24] <GuShH> users, about most of them.
[20:04:57] <jadew> I'm gonna get that meter, looks nice
[20:04:58] <jadew> thanks
[20:45:38] <GuShH> jadew: about that meter, it's got fluke-fast auto ranging and pretty good stability / accuracy (even though it drifts like everything else in this universe and has to be recalibrated every once in a while, but what can you do about it other than freeze time?)
[20:45:59] <Tom_itx> link?
[20:46:02] <GuShH> I've got plenty other cheapies, the auto-ranging is slow as hell and makes it barely usable
[20:46:07] <GuShH> Tom_itx: it's just the ut61e
[20:46:15] <GuShH> pretty old by now, I wonder if they've got nicer deals now
[20:47:25] <GuShH> heh lots of videos on youtube, when I got it there was one video showing the auto-ranging and it was in some obscure language
[20:47:54] <GuShH> here's another https://www.youtube.com/watch?v=0sQlPKCk1Kw
[20:48:24] <GuShH> ffs, couldn't read two comments without reading "dave"
[20:49:01] <GuShH> "hopefully dave will review it" (dickface) yeah go ahead, wait for him to review what to eat and drink and which toilet paper to wipe your arse with. idiots.
[20:49:23] * GuShH takes a deep breath
[20:49:34] <GuShH> Tom_itx: Do you happen to know if there's a site where they list cellphones and their connectors?
[20:49:43] <GuShH> For example N8 = Micro USB (which type, etc)
[20:50:02] <Tom_itx> not off hand
[20:51:58] <Tom_itx> http://ebookbrowse.com/mobile-phone-connector-chart-pdf-d187254028
[20:52:02] <Tom_itx> dunno what that is
[20:54:09] <GuShH> They've forced them to the usb standard, but they still use a ton of variants
[20:54:12] <GuShH> It's annoying.
[20:54:54] <GuShH> So when I had to fix my cellphone I ended up buying different types of micro-usb connectors, I got sent the wrong parts, others were not exactly the same, etc. So I put them all for sale, now I get bombared with the same questions.
[20:55:07] <GuShH> I'm tempted to just say "throw it away it's not meant to be serviced"
[20:55:20] <Tom_itx> that's what they want
[20:56:14] <GuShH> At the same time I want to help so I look it up and draw blanks.
[20:57:26] <Tom_itx> http://www.bose.com/controller?url=/popup/tech_details/popup_mobile_comm_kit_compatibility.jsp&src=PHONES
[20:57:30] <Tom_itx> there's a headset chart
[20:57:36] <Tom_itx> not what you want though
[20:57:44] <GuShH> there's middle mount, bottom mount, top mount, this variant, that variant, improved reliability, improved bullshitility, etc. there may be even some with extra pins that look like micro-usb but they aren't.
[20:59:09] * GuShH thinks it's all one big conspiracy
[21:40:28] <GuShH> jadew: bah this is all I could find / remember about the project http://gushh.net/blog/ut61e-protocol/
[21:41:22] * GuShH has been on a downward spiral ever since
[22:42:31] <jadew> GuShH, thanks
[23:00:04] <jadew> for some reason my orders are getting more expensive and the quantity of stuff is getting lower
[23:00:15] <jadew> and it's not even stuff I can get excited about
[23:01:20] <jadew> a few inductors, 2 enclosures, a few regulators, a few knbos => bam $100
[23:01:49] <jadew> I used to get a ton of shit for $100 a year ago when I got into this
[23:02:55] <jadew> "that's how they get you"
[23:03:42] <Casper> free crack
[23:29:08] <tzanger> vegetable oil genset?
[23:29:35] <tzanger> http://univpower.en.made-in-china.com/product/QbZnKNMdwjhu/China-15kVA-Vegetable-Oil-Generator-Set-UT16E-.html
[23:31:40] <Casper> tzanger: in other words: a diesel genset with a fuel heater
[23:35:29] <tzanger> yes, but I am not sure that's what he was talking about when he mentioned UT16E
[23:38:15] <Casper> the genset model
[23:43:47] <GuShH> tzanger: Casper uni-t's ut61e, it's rather clear.
[23:44:21] <GuShH> So if someone says C4 in a musical theatre, you immediately think plastic explosive? you've got problems.
[23:44:55] <Casper> sure, it's explosive!
[23:44:58] <GuShH> The context here is electronics.
[23:45:19] <GuShH> Also just about any old diesel genset can run on whatever.
[23:45:38] * GuShH wants a lister
[23:46:01] <Casper> what do you think they put in that Pyotr Ilyich Tchaikovsky piece? that ouverture 1812?
[23:46:36] * GuShH sighs
[23:46:40] <Casper> GuShH: a lister could be fun yeah, but I sadly have no real need for it :(
[23:46:49] * Casper needs to move where the electricity isn't stable :D
[23:47:17] <GuShH> Me neither, although I could use it to mulch stuff
[23:47:20] <Casper> I could build a really nice setup!
[23:47:22] <GuShH> or split logs
[23:47:44] <GuShH> Right now I'm looking to fix a small gas engine for a robotics project
[23:47:53] <GuShH> top end is scorred, spare parts cost more than a new one...
[23:47:57] <Casper> auto start DC genset, then I'ld build a variable speed thing for it (should be easy!)
[23:48:04] <GuShH> can't hone it and over size it since it's plated
[23:48:29] <GuShH> nichisil or whatever it's called. cheap way to make an alu cylinder
[23:48:41] <GuShH> no iron sleeve....
[23:48:47] <Casper> a car alternator... the new one have a PWM output that tell the ECU at what power it run at
[23:49:18] * Casper actually beleive that it's the output from the rotor field driver
[23:49:28] <Casper> so it probably lower as you rev it up
[23:49:39] <Casper> so actually could even be analog...
[23:49:54] <GuShH> hmm 50W 470R for 60 cents
[23:50:03] <Casper> PWM -> low pass -> opamp -> solenoid
[23:50:47] <GuShH> considering it includes shipping... that doesn't sound bad.
[23:51:16] <Casper> GuShH: 1/3 price than the local store, when they have something
[23:51:29] <GuShH> I hate local places
[23:51:32] <GuShH> they never have anything
[23:51:37] <GuShH> they always lie to you saying "next week"
[23:51:40] <GuShH> bunch of assholes.
[23:52:59] <Casper> actually, here it's: "special order, minimum quantity apply, 10 business day"
[23:53:25] <Casper> meaning that it end up cheaper for most to just buy on digikey and have it tomorrow
[23:54:18] <Casper> then they complain that nobody buy parts there anymore
[23:54:28] <Casper> hence why they have nothing stock
[23:54:45] <Casper> many times I went because I needed a common part like...
[23:55:44] <Casper> ... 7805... lm317... 555... 1n4148 (yes, they ran out of them)... and more...
[23:56:04] <GuShH> lol
[23:56:10] <GuShH> same here
[23:56:24] <GuShH> most of these places don't even have a website
[23:56:32] <GuShH> some refuse to sell "parts lists"
[23:57:55] <Casper> hey they ran out of resistors!
[23:58:01] <Casper> several values
[23:58:27] <Casper> they ran out of 1/8 1/4 1/2 and even 1W of 3 of the values I needed