#avr Logs
May 23 2018
#avr Calendar
12:33 AM day__ is now known as day
03:32 AM Emil: E K S T R A T U C E V A
03:32 AM Emil: toddpratt: external int is different from pcint
03:32 AM Emil: but if your pin has pcint you can detect change yes
04:18 AM polprog: https://pbs.twimg.com/media/Dd1HFnsU0AALuKj.jpg:orig
04:18 AM polprog: Emil
04:18 AM nuxil: lol
04:20 AM nuxil: polprog, for snow we say it in 3 wasy. depending on the dialect. sne, sny or snø
04:21 AM polprog: maybe theres some finnish tutor close to my house
04:21 AM polprog: burdo bördo*
04:33 AM Emil: polprog: kek
05:02 AM nuxil: Instead of EU the nordic contrys should have done a Kalmar (Re)union. would be the biggest contry in Europa except russia. but only 1/3 of russia is in Europa :p
05:12 AM polprog: inb4 polish-lithuanian commonwealth
05:17 AM thardin: there is a bit of cooperation already
05:17 AM thardin: scotland can come too. but not denmark
05:18 AM nuxil: heh
05:20 AM nuxil: you want cheap haggis ?
05:21 AM Thrashbarg: it tastes as good as it sounds!
05:22 AM nuxil: never tried it and somethings are not meant to be tried.
05:22 AM Thrashbarg: I've tried nato
05:23 AM Thrashbarg: fermented soybeans that look like snot
05:25 AM thardin: haggis seems pretty close to pölsa, so why not
05:27 AM nuxil: natto. eww. i dont eat soya. soya contains phytoestrogens called isoflavones that may mimic the hormone estrogen.
05:27 AM nuxil: and that is a female hormone :p
05:27 AM nuxil: i dont want boobs :p lol
05:28 AM Thrashbarg: lol
05:28 AM thardin: better drink some milk, definitely no estrogen in there
05:28 AM nuxil: i drink rarly milk.
05:29 AM nuxil: *i rarly drink milk.
05:29 AM nuxil: i like juice.
05:30 AM thardin: juice is one way to stay away from flouridation
05:30 AM nuxil: woot? you got fluor in your spring water ?
05:31 AM thardin: it's a plot sap and impurify our precious bodily fluids
05:31 AM nuxil: her they use chlorine in the spring water. but no fluor afik.
05:31 AM nuxil: *here
05:43 AM polprog: i drink tap water here
05:43 AM * Haohmaru stops pouring fluor in nuxil's water for a moment
05:43 AM * Haohmaru continues
05:43 AM Thrashbarg: I don't drink tap water here because it's disgusting
05:43 AM Thrashbarg: makes you more thirsty
05:43 AM Haohmaru: ooh, addictive water
05:43 AM Thrashbarg: ~150 ppm the last time I measured it
05:43 AM * polprog makes chlorinated water for nuxil
05:43 AM polprog: sparkling :v
05:44 AM Thrashbarg: yup
05:45 AM Thrashbarg: carbonated milk
05:46 AM polprog: https://youtu.be/OA2fcwh2Zc0
05:46 AM polprog: pentium overclocking intensifies
05:46 AM nohitzzzz: sup Haohmaru
05:46 AM polprog: hey nohitzzzz
05:47 AM nohitzzzz: have you done any STM32 code?
05:47 AM nohitzzzz: hey polprog
05:47 AM Haohmaru: nohitzzzz no, thankfully, we changed the "plan" once again, and we're back to the old scheme
05:47 AM Haohmaru: too bad it took like 2 months to fool around with that
05:47 AM nohitzzzz: but did you get any STM32 boards?
05:47 AM Haohmaru: no
05:48 AM polprog: shame
05:49 AM nohitzzzz: i have 4 weeks summer holiday in august
05:49 AM nohitzzzz: but i dont feel like being that long away from work
05:49 AM Haohmaru: shadap
05:50 AM nohitzzzz: i mean it, we need to get our product out asap so no time to waste
05:50 AM Haohmaru: we ordered the 3 boards from 2 months ago
05:51 AM Haohmaru: now i'm fighting with comet's stupid "BOM import feature"
08:02 AM nuxil: fartduino lol.. https://twitter.com/hashtag/fartduino?vertical=default&src=hash
08:05 AM polprog: http://i0.kym-cdn.com/entries/icons/original/000/013/034/yeahsciencebitch.PNG
08:06 AM Thrashbarg_ is now known as Thrashbarg
08:06 AM polprog: i was thinking about getting an ardweeny board for faster prototyping
08:07 AM polprog: but meh.. breadboards are fine
08:07 AM polprog: so i got a new breadboard instead
08:07 AM nuxil: :D
08:07 AM polprog: now i have 3 that can go together
08:07 AM Thrashbarg: easier to convert from a breadboard to something more permanent lol
08:07 AM nuxil: yea. order from ebay
08:07 AM polprog: yeah
08:07 AM nuxil: i ordered 6 from ebay.. costed nothing.
08:08 AM nuxil: i made two breadboards with 3x
08:08 AM Thrashbarg: I should get some more too :/
08:08 AM Thrashbarg: and those terminated leads that work well with them
08:08 AM polprog: flashbacks of permanent projects from /r/electronics, with arduinos or the like hot glued and connected to chineese modules with jumper cables
08:09 AM polprog: eww
08:09 AM Thrashbarg: heh
08:10 AM Thrashbarg: https://www.youtube.com/watch?v=g_ZaioqF1B0 heh
08:13 AM nuxil: Thrashbarg, https://www.youtube.com/watch?v=C8txvmXUIJQ go to time 8:45 and check the backside of that.
08:13 AM nuxil: thats art :p
08:15 AM Thrashbarg: wow neat
10:00 AM polprog: heh thats a proper YT video
10:00 AM nohitzzzz: we did similar kind of thing at school, 1 processor and few RAM chips and wrapped the wires
10:00 AM polprog: shaking camera, voiceover from the back
10:00 AM nohitzzzz: so long ago that i cant remember the details
10:00 AM polprog: nohitzzzz: oh. sounds like cool stuff
10:03 AM nohitzzzz: our teacher was former HW designer at nokia and he showed us lots of configurations with microprocessor and RAM/ROM/IO. he didnt teach MCU stuff at all
10:04 AM nohitzzzz: banking memories etc
10:04 AM nohitzzzz: address decoders
10:06 AM nohitzzzz: luckily i have kept all my notes/schematics
10:06 AM nohitzzzz: i need to re-draw them someday
10:09 AM polprog: yeah, scan this stuff
10:10 AM polprog: i found miniDV tape rips from 12 years ago, from our old video camera on a hard disk yesterday
10:10 AM polprog: my 6th birthday
10:10 AM polprog: heh
10:10 AM nohitzzzz: heh
10:11 AM polprog: and a ton of Dexters Laboratory episodes. i remember watching them on the pentium 4 pc when it was our home computer
10:11 AM polprog: and muppets
10:11 AM polprog: :D
10:12 AM polprog: it ran ubuntu when it was a new distro
10:13 AM polprog: disk had files dating back to 2004
10:13 AM polprog: i need to back it all up
10:16 AM nohitzzzz: i have pentium 4 ubuntu/XP dual boot machine in the closet
10:16 AM nohitzzzz: i need to replace a fan for it
10:17 AM nohitzzzz: it has avr studio 4, which is a great ide. it was before they took visual studio
10:19 AM nohitzzzz: im gonna put all kinds of computers in my new lab
10:21 AM polprog: virtualize it
10:21 AM polprog: or install studio 4 on newer windoze
10:21 AM nohitzzzz: c64, amiga 500 and maybe atari st. then for the development some PCs
10:22 AM polprog: virtualization seems like a good way to preserve old systems
10:22 AM polprog: if its possible
10:22 AM nohitzzzz: ok, i havent done it
10:27 AM nohitzzzz: my co-worker gave me a SATA/IDE-to-USB cable, i need to dig up some old harddrives
10:28 AM nohitzzzz: if remember correctly i should have 5GB of acapella tracks on one disk
10:41 AM nohitzzzz: i wonder how the fpga arduino will be
10:41 AM nohitzzzz: the tools interest me the most
10:42 AM nohitzzzz: fpga tools are usually expensive and bloated
10:43 AM nohitzzzz: but they said that there will be some new tools for the fpga arduino
10:43 AM nohitzzzz: i wonder if its a visual programming tool
10:44 AM nohitzzzz: i would like to build something like this http://www.fpga4fun.com/digitalscope_hdl1.html
12:11 PM nuxil: i thinkn it will be a flop. in terms of big sales. but might be a good startinpoint for thouse who want to try out fpga.
12:15 PM nohitzzzz: it all depends on the tools. if its as easy as arduino "C++" programming it might be successful. the "maker" community must be looking for something new after those same old arduino projects that everybody does
12:18 PM nuxil: stm32 ?
12:18 PM polprog: nice
12:23 PM nuxil: i think this new fartduino is just a niche. all your c++ skills means jack when coding for fpga afik. i dont know tho. never tried it.
12:23 PM nohitzzzz: what
12:24 PM nohitzzzz: i think you misunderstood something
12:27 PM polprog: 2lol\
12:27 PM polprog: lol*
12:28 PM nohitzzzz: i was referring how easy it is to use regular arduinos with c++. if they come up some system that is as easy as that, then it might be successful
12:30 PM polprog: you cant just take what youve learnt about computer programming and program an FPGA
12:30 PM polprog: even i know this
12:30 PM nohitzzzz: yeah, things happeb in parallel
12:30 PM nohitzzzz: not procedurally
12:30 PM antto: you can just take what you've learned and wipe yer butt with it ;P~
12:30 PM polprog: so you would have to, at least, create arduino tier easy to understand resources to learn how to understand and program FPGAs
12:31 PM antto: i want cpus with serial processing.. MOAR gigahurtz
12:32 PM * polprog drops a pallet of thin clients and a 40 port switch at antto's doorstep
12:32 PM antto: a wat
12:34 PM nohitzzzz: i think they will do a collection of modules, ready-made components, kinda like the arduino HAL
12:34 PM antto: visual programming is the future for the lolduino target group
12:35 PM nohitzzzz: like all these https://en.wikipedia.org/wiki/List_of_7400_series_integrated_circuits
12:35 PM nohitzzzz: and maybe some cpu core
12:36 PM nuxil: i hate visual programming , c4d uses it for xpresso and i cant stand it. also tried it in unreal editor meh.
12:37 PM nohitzzzz: Just like the Arduino team simplified C++ programming, we simplify FPGA design by providing easy to use drag and drop circuit libraries. We believe that drawing circuits will result in an amazing outpouring of creative FPGA projects!
12:37 PM nohitzzzz: http://papilio.cc/
12:38 PM nuxil: so we end up with programs like http://www.bigmikedesign.com/blog/wp-content/uploads/2012/07/xpresso1.jpg ? :p
12:39 PM nohitzzzz: https://www.youtube.com/watch?v=_34yHrEZC-E
12:39 PM nohitzzzz: pretty cool
12:40 PM nohitzzzz: this is pretty cool too https://www.youtube.com/watch?v=QU8sKsr6lO4
01:00 PM nohitzzzz: nuxil, in fpga case its more like doing schematics
01:03 PM polprog: oh god nuxil
01:03 PM polprog: eww
01:03 PM polprog: yeah, visual sucks for stuff bigger than "small"
01:10 PM HelloShi- is now known as HelloShitty
01:10 PM nohitzzzz: polprog port doom or quake to switch
01:10 PM polprog: nintendo switch, or cisco?
01:10 PM nohitzzzz: nintendo
01:10 PM polprog: nintendoom
01:12 PM nohitzzzz: i have this book, very interesting https://www.amazon.com/Game-Engine-Black-Book-Wolfenstein/dp/1539692876 lots of interesting low level stuff
01:12 PM polprog: sounds kewl
01:13 PM polprog: windows is some kind of retarded with my usb 30 ports
01:13 PM nohitzzzz: you have 30 usb ports ? :D
01:14 PM polprog: 3 point oh
01:14 PM nohitzzzz: oh
01:14 PM polprog: disks/pendrives just dont work with them
01:14 PM polprog: 30 ports, usb hub abuse
01:14 PM polprog: im checking out Unreal Gold
01:14 PM nohitzzzz: i have this 7 port powered usb hub, really nice
01:16 PM nohitzzzz: polprog do you have a school decided after hi school already?
01:17 PM nohitzzzz: uni?
01:17 PM nohitzzzz: or some tech school
01:20 PM polprog: nohitzzzz: not really. i have a list of ones that teach what im interested in
01:20 PM polprog: uni definitely
01:20 PM nohitzzzz: yeah
01:21 PM polprog: tech school is at the same time as high school (tecnikum vs liceum). technikum is 4 years while liceum is 3 years. im finishing 2nd year in liceum
01:21 PM nohitzzzz: ok
01:26 PM nohitzzzz: you will be pretty wizard there, knowing everything already and teaching other students
01:26 PM nohitzzzz: and deepening your knowledge
01:45 PM polprog: i dont want to boast
01:46 PM polprog: but the lab in the tech school in my high schol (its two schools under one headteacher) is...
01:46 PM polprog: mediocre
01:47 PM polprog: heh just learnt how to make apache return arbitrary codes on chosen paths
01:59 PM cehteh: brilliant idea
02:04 PM polprog: security through obscuirty i know. but this isnt meant to secure anything
02:05 PM polprog: just as a joke, return 402 payment requred on some stuuff
03:04 PM polprog: HEH. unreal gold kicks ass
03:15 PM polprog: https://www.youtube.com/watch?v=RDFvqLhCbo8
03:15 PM polprog: this thing plays realy well if you hook it up to proper speakers
03:15 PM polprog: someone made a video about my boombox
03:15 PM polprog: it has a mixing mic input as well
03:16 PM polprog: i like it
03:16 PM polprog: drives my pair of desk speakers, connected to the PC
03:27 PM MrFahrenheit: expectation vs reality https://imgur.com/a/YLkWQNl
03:27 PM Ameisen: I'm wondering if there's a better way to handle very-high frequency step rates on an AVR
03:27 PM Ameisen: without quadstepping, most people appear to hit 40K/s pulses before choking the CPU
03:27 PM Ameisen: there's no good use for quadstepping. It basically nullifies microstepping.
03:28 PM Ameisen: Unless your driver has a microstepping interpolator built in
03:28 PM Ameisen: better to lower microstepping than use quadstepping
03:28 PM Ameisen: My thinking is that if you _know_ you are trying to do very, very high steprates, might make sense to not use an interrupt to handle it, and just have it be in a tight loop
03:28 PM Ameisen: eliminating the interrupt overhead
03:29 PM Ameisen: Also preferentially put all the drivers' step pins onto pins that share the same port so you can trigger them all with one instruction rather than 4
03:29 PM Ameisen: same with dir pins. Ideally, step and dir are all on one port.
03:49 PM polprog: i dont remember who linked the yt video where a guy was showing his FPGA isa card
03:49 PM polprog: but hes genius
03:49 PM polprog: i love that board
03:49 PM nuxil: i know :D
03:49 PM polprog: i should dive into that.
03:50 PM polprog: it still sounds complicated but on one of the 33c3 talks the host said pcie runs even over a piece of wet string
03:50 PM polprog: maybe i should try an stm32 board with x1 PCIe
03:51 PM polprog: just because i dont have an ISA comp. i have some that have PCI
03:51 PM polprog: my desktop has one pci port
03:57 PM nuxil: well if you want to play with fpga and custom cpu architecture think you should start of with this new fartduino 1st .. :p
03:57 PM polprog: lolnope.jpg
03:57 PM polprog: i have an altera icestick board on my mind
03:57 PM nuxil: :p
03:57 PM polprog: there is a linux toolchain for it
03:57 PM polprog: or lattice ICE
03:58 PM polprog: sorry it was lattice not altera
03:58 PM Nephen: Hi all
03:58 PM nuxil: howdy
03:58 PM polprog: either the small usb one or a traditional form factor square board with a shit ton of headets
03:58 PM polprog: headers*
03:58 PM polprog: hey Nephen
03:59 PM nuxil: his wirewrapping is a pize of art on thouse cars he made tho.
03:59 PM polprog: hell yeah
03:59 PM nuxil: *cards
03:59 PM Nephen: I got a problem making a midi in with an arduino uno (not using arduino library)
03:59 PM MrFahrenheit: I have a xilinx dev board that I effectively stole from my uni cause I kept forgetting to return it and the TA that gave it to me kept saying "forget about it"
03:59 PM polprog: hehe. free gear best gear
03:59 PM MrFahrenheit: never even used it cause I didn't know the xilinx ide was linux compatible
04:00 PM Nephen: If someone wants to see the code I posted it here, as well as a more detailed description of the problem https://forum.arduino.cc/index.php?topic=549169.0
04:00 PM Tom_L: MrFahrenheit, i run it on both platforms
04:00 PM MrFahrenheit: I was gonna use it to make my own cpu architecture for a uni thing, but then I did something else
04:01 PM Tom_L: newer chips don't work on webpack though
04:01 PM Tom_L: i forget what series
04:01 PM Nephen: <MrFahrenheit> : bought one when I was at uni, using the discount academics get. It is quite nice :)
04:02 PM polprog: Nephen: i dont like this line
04:02 PM polprog: MIDIin = (MIDIin+1) & (MIDILEN-1);
04:02 PM polprog: }
04:02 PM nuxil: https://github.com/boourns/AVRMIDI
04:02 PM polprog: while it works in your case, changing midilen will break it
04:02 PM nuxil: https://github.com/boourns/AVRMIDI/blob/master/example/handlers.c
04:02 PM Nephen: well, it's true it's not very clean code, but I do think it works?
04:03 PM Nephen: I mean, that particular line :)
04:03 PM nuxil: look at the link i posted.
04:04 PM Nephen: Thanks, I'll try it :)
04:06 PM polprog: are you sure you are actually getting correct messages?
04:06 PM Nephen: Not sure, there is only one uart and I ue it for midi
04:06 PM Nephen: So I can't monitor the messages using usb
04:06 PM polprog: can you write a fake midi sender prog then ;)
04:06 PM polprog: it can be done even in bash heh
04:06 PM Nephen: Oh, I mean, yes, the messages send are definitely ok, it's out of my external audio card with midi
04:06 PM polprog: do you have a usb-uart board? maybe a logic analyzer?
04:06 PM polprog: oh ok
04:06 PM Nephen: unfortunately no, that would have helped a lot :)
04:07 PM Tom_L: you need one in your bag of toys
04:07 PM polprog: yeah. its not a huge expense and helps a LOT
04:07 PM Nephen: Yes :) When I get the money I'll buy that, and an oscilloscope. Much needed too :)
04:07 PM Tom_L: especially if you cheat and get a clone
04:08 PM Nephen: How much would be a cheap one?
04:08 PM nuxil: 5bucks
04:08 PM polprog: les than that even
04:08 PM Tom_L: https://www.ebay.com/itm/clone-saleae-datalog-analizzatore-segnali-digitali-8-canali-24Mhz-D260/372219924708?hash=item56aa0950e4:g:z6IAAOSwokJagJBp
04:09 PM polprog: ah LA. well usb-uart is even cheaper
04:09 PM Nephen: Oh, this is a lot cheaper than I expected
04:09 PM Nephen: Thought it was no less than 100 bucks
04:09 PM nuxil: https://www.ebay.com/itm/New-USB-Logic-Analyzer-Device-Set-USB-Cable-24MHz-8CH-24MHz-for-ARM-FPGA-M100/112854937075?hash=item1a46adadf3:g:MoIAAOSwf-taoIHR
04:09 PM Nephen: Thanks all :)
04:10 PM polprog: so
04:10 PM polprog: you know it receives messages, right?
04:10 PM nuxil: Tom_L, thats a expensive clone :p
04:10 PM Nephen: polprog, what do you mean?
04:11 PM polprog: Nephen: you wrote there that it correctly receives those messages, how do you know that
04:12 PM Nephen: polprog: I tried to turn on and off the led when a byte was received, and it worked
04:12 PM polprog: okay
04:12 PM polprog: so try this now, light a led if LSB of the message is 1
04:12 PM Emil: what's the issue
04:12 PM polprog: to make sure you receive them right
04:12 PM * Emil crunches rye chips
04:13 PM Nephen: polprog: I tried this, not a problem of indianess
04:13 PM Nephen: emil: I fail to receive correct midi messages with an arduino uno :)
04:13 PM Emil: Nephen: at what baudrate?
04:13 PM nuxil: Nephen, just blame Emil, its his all fault :p
04:13 PM Nephen: nuxil: ^^
04:14 PM polprog: yeah, you dont seem to mention baudrate there
04:14 PM Nephen: emil: at 31250
04:14 PM Emil: nuxil: Haohmaru even hounds me on other channels :D
04:14 PM nuxil: haha :p
04:14 PM polprog: http://www.personal.kent.edu/~sbirch/Music_Production/MP-II/MIDI/midi_physical_layer.htm
04:14 PM polprog: this^^^^
04:15 PM Emil: Nephen: share code?
04:15 PM Nephen: Thanks for the link :)
04:15 PM polprog: http://www.personal.kent.edu/~sbirch/Music_Production/MP-II/MIDI/midi_protocol.htm
04:15 PM polprog: this is the data layer
04:15 PM Nephen: seems baud rate is correct though
04:15 PM Emil: I actually ran into an issue today
04:15 PM polprog: so what i think is wrong
04:15 PM Emil: with going too fast
04:15 PM polprog: that you interpret that byte by byte instead
04:15 PM Nephen: emil: https://forum.arduino.cc/index.php?topic=549169.0
04:15 PM Emil: for some reason the combination of my computer, usb to serial adapter and chink arduino mini board didn't want to run at 250k, 500k or 1M
04:16 PM Emil: 115200 worked though
04:16 PM polprog: or rather, stop, backspace, ^H^H^H^H
04:16 PM Emil: I bet it was because of the adapter
04:17 PM polprog: so if you look at the second .edu link
04:17 PM polprog: a note on message is 3 bytes
04:18 PM Emil: Nephen: your midimessage is not volatile btw
04:18 PM Nephen: polprog, yes, of course, there is note and velocity too
04:18 PM Nephen: polprog, but for now, I just want to light the led on a note on byte
04:18 PM polprog: allright you are "filtering" the status byte
04:18 PM Nephen: emil: oh, might be it. I'll try now to see if it changes anything
04:18 PM polprog: make MIDIbuffer volatile
04:19 PM polprog: you are accessing it from an ISR, it has to be volatile
04:19 PM polprog: wait, it already is
04:20 PM Nephen: oh, yes, forgot that I already did it
04:20 PM Nephen: I tried to reverse indianness too, but it still don't work
04:20 PM Emil: Nephen: emil.fi/d/midithing.c
04:20 PM Emil: editing this here
04:20 PM Nephen: thanks :)
04:21 PM Nephen: I opened it
04:22 PM polprog: try moving the switch into the ISR to test if the case logic is ok
04:23 PM Nephen: ok, I tell you when it's done
04:23 PM Emil: eww
04:23 PM Emil: vlas
04:23 PM Emil: on avr
04:23 PM Emil: vat are you doing
04:23 PM polprog: what
04:24 PM Emil: ohwait nvm
04:24 PM Emil: can't read #yolo
04:25 PM polprog: the symptom that it light up or not depending on the note might mean you are reading the pitch instead
04:25 PM Emil: this code is super strangely written
04:26 PM polprog: yeah... its odd
04:26 PM Emil: you just want to receive midi frames?
04:27 PM polprog: its 22:51 and im thinking whether to open my scope and try to correct the timebase or not
04:27 PM Nephen: I moved the switch in the interrput, still same problem
04:27 PM Nephen: yes, I just want to do that
04:27 PM polprog: de facto id just have to move the PC off it and unscrew the chassis... i hope
04:28 PM Nephen: polprog: that's what I thought, that I was reading part of the pitch... even though I shouldn't :D
04:28 PM Emil: Nephen: what seems to be the issue?
04:29 PM polprog: one solution is to add the reamining 7 leds to PORTC and display the whole byte
04:29 PM Nephen: emil, well I don't have a clue from where it could come... But instead of correctly getting the note on/off, the led lights and turns off with certain midi keys
04:29 PM polprog: as a debug
04:29 PM Emil: Nephen: so you are feeding data into your avr
04:29 PM Emil: Nephen: midi data
04:29 PM Emil: and
04:29 PM Emil: you are doing it blind
04:29 PM Nephen: polprog: well, I could do that, but I don't even know if I'm on the right byte, and the 3 bytes of note on come very cloe one to another
04:30 PM Emil: I suggest debugging and building on computer and then when it does what you want using actual data.
04:30 PM Emil: In any case
04:30 PM Nephen: emil: you mean, emulating the code on computer?
04:30 PM polprog: yeah, there is just too many unknown variables here
04:30 PM Emil: Nephen: testing that your code does what you want
04:30 PM polprog: you dont really know what is your card sending
04:30 PM Emil: but
04:30 PM Nephen: emil: oh, yes, I see what you mean
04:31 PM Nephen: emil: well, not really :p
04:31 PM Nephen: Maybe it would be best to do as you say, indeed
04:31 PM Emil: But
04:32 PM polprog: im opening the scope
04:33 PM Emil: Nephen: emil.fi/d/seriallib.c
04:33 PM Emil: "lib"
04:34 PM Nephen: emil: thanks ^^
04:39 PM Emil: Nephen: you can also look at /d/streamer.c for some usage
04:39 PM Emil: neither are midi
04:39 PM Emil: but just how to use the avr libc
04:40 PM Nephen: yes, I'll go there too, thanks to all for your advices :)
04:48 PM Nephen: Guess I'll go sleep on it
04:48 PM Nephen: :)
04:48 PM Nephen: Thanks to all and see you !
05:05 PM polprog: nice
05:05 PM polprog: timebase is better now
05:05 PM polprog: 1khz actually matches the screen grid
05:05 PM polprog: and im alive so thats a good thing too
05:06 PM polprog: channel 1 fine control is still broken, ch2 voltage readings are a bit off
05:06 PM polprog: not sure if thats becuase im using a 10mohm 10x probe
05:07 PM polprog: with a 1M input
05:07 PM polprog: but the rigol has those as well and is ok
05:07 PM polprog: fixing the vertical deflection boards requres me to lift the horiz board and thats quite risky as i dont have a place to put it
05:08 PM polprog: and i wouldnt like to power it on while one of the boards directly connected to the CRT is just laying there somewhere. and the wires are short so thats a no
05:08 PM polprog: :/
05:08 PM polprog: ill have to come up with something
05:12 PM polprog: both channels are totally off
05:14 PM Emil: polprog: mate
05:14 PM Emil: polprog: why do you _pay_ for shit that's broken :D
05:15 PM polprog: becuase its not broken
05:15 PM Emil: Perhaps I'm biased but I probably wouldn't even take an old scope for free
05:15 PM polprog: well, i wanted an analogue one and this one is pretty good.
05:15 PM polprog: i was planning to use it as XY mode only anyway
05:16 PM Emil: Heh
05:16 PM Emil: an expensive display
05:16 PM polprog: not more expensive than a computer screen
05:17 PM polprog: analogue scope turns out to be useful sometimes
05:17 PM polprog: its probably a matter of turning one trimpot somewhere there
05:17 PM polprog: as the timebase was
05:19 PM polprog: nite
05:20 PM Emil: good night
05:31 PM JanC_ is now known as JanC
10:06 PM Thrashbarg: http://www.ti.com/lit/ds/symlink/tle2084.pdf <-- anyone else notice the slight problem with the sample schematics on page 64? lol
10:12 PM Casper: +/-
10:12 PM Thrashbarg: yeeeup
10:16 PM rue_mohr: guard rhings, not cable shields...
10:17 PM rue_mohr: hey wait
10:17 PM rue_mohr: wtf
10:17 PM Thrashbarg: heh
10:18 PM rue_mohr: is the middle on an oscillator example?
10:18 PM rue_mohr: :/
10:18 PM Thrashbarg: nope inverting amp
10:18 PM rue_mohr: no
10:18 PM rue_mohr: I think its an oscillator centered around where the 180 degree phase whift is of the amp
10:19 PM Thrashbarg: so where does the phase shift come from
10:19 PM Thrashbarg: it'd be much easier to assume they screwed up the schematic
10:19 PM Thrashbarg: copy/paste
10:19 PM Thrashbarg: same deal with the voltage follower... wtf
10:23 PM rue_mohr: diagram 32, page 53
10:24 PM rue_mohr: 180 degrees isn't shown tho
10:24 PM Thrashbarg: right so what would Vi control
10:25 PM rue_mohr: vi would be the startup exitation source...
10:25 PM rue_mohr: and maybe dc level control
10:25 PM Thrashbarg: so now explain the purpose of the third schematic :P
10:25 PM rue_mohr: .... uuuuh
10:26 PM Thrashbarg: fun fact: sometimes they fuck up datasheets
10:26 PM rue_mohr: WHATS! nooo.
10:27 PM rue_mohr: thats like saying windows has securrity issues out of the box
10:27 PM Thrashbarg: mmhmm
10:27 PM rue_mohr: my buddies swear its just not true
10:27 PM rue_mohr: if you have a problem, your just doing it wrong
10:28 PM Thrashbarg: sounds like a Uni lecturer
10:28 PM Thrashbarg: "the book is wrong but if you give a different answer you won't receive full marks"
10:28 PM rue_mohr: heh
10:29 PM rue_mohr: "oh crap crap crap, this is the one he persistantly did wrong in class..."