DocScrutinizer05 changed the topic of #qi-hardware to: Copyleft hardware - http://qi-hardware.com | hardware hackers join here to discuss Ben NanoNote, atben / atusb 802.15.4 wireless, and other community driven hw projects | public logging at http://en.qi-hardware.com/irclogs and http://irclog.whitequark.org/qi-hardware
arielenter has quit [Ping timeout: 247 seconds]
wej has quit [Ping timeout: 252 seconds]
wej has joined #qi-hardware
FDCX has joined #qi-hardware
wolfspraul has quit [Read error: Operation timed out]
wolfspraul has joined #qi-hardware
wej has quit [Ping timeout: 245 seconds]
<nicksydney> wpwrak: which footprint you normally use for Balun ?
arielenter has joined #qi-hardware
arielenter has quit [Client Quit]
arielenter has joined #qi-hardware
xiangfu has joined #qi-hardware
<wpwrak> 0805-6, from ben-wpan/modules/
arielenter has quit [Quit: Leaving.]
arielenter has joined #qi-hardware
arielenter has quit [Quit: Leaving.]
<wpwrak> btw, this is a nice comparison between the 1052 (old) and the 2xx2 (new):: http://www.youtube.com/watch?v=_TSr9nFN1GU
<wpwrak> some things he says are obsolete, but the overall comparison is still interesting. also, the 1000Z wasn't out yet back then.
nicksydney has quit [Remote host closed the connection]
nicksydney has joined #qi-hardware
<wpwrak> btw, this is a nice comparison between the 1052 (old) and the 2xx2 (new):: http://www.youtube.com/watch?v=_TSr9nFN1GU
<wpwrak> some things he says are obsolete, but the overall comparison is still interesting. also, the 1000Z wasn't out yet back then.
arielenter has joined #qi-hardware
panda|w530 has joined #qi-hardware
<nicksydney> wpwrak: thanks for the footprint
<nicksydney> bit lost looking at this datasheet http://www.silabs.com/Support%20Documents/TechnicalDocs/C8051T622-23-T326-27.pdf .. does this mean that this is a normal MCU like KL25/26 or it is only a USB IC chip ?
<wpwrak> seems to be general-purpose
<nicksydney> interesting
<nicksydney> if it says "USB Function Controller" that means the MCU supports USB out of the box correct ?
<nicksydney> ahh yes pg 17 shows the diagram of connecting USB
<nicksydney> the question is how do we program this tiny baby :)
<nicksydney> seems like mouse is selling the daughtercard for this IC http://au.mouser.com/ProductDetail/Silicon-Labs/C8051T327DB28/?qs=sGAEpiMZZMuur7c7MCGU2DP8l2OptDKm
<wpwrak> why pick this 8051 ? wouldn't you rather use an ARM ?
<nicksydney> wpwrak: i was just curious ... what it takes to program one of this baby
<nicksydney> wpwrak: ARM is better of course :)
<wpwrak> well, you need a fancy voltage and something that speaks the C2 protocol
<nicksydney> C2 protocol ?
<nicksydney> :)
<wpwrak> yup, that one :)
<nicksydney> so that what kind of format normally the final file after compiling .. is like the .hex in AVR ?
arielenter has quit [Quit: Leaving.]
<wpwrak> depends on what you generate :) e.g., i think my C2 tools want a binary: http://projects.qi-hardware.com/index.php/p/f32xbase/source/tree/master/
<wpwrak> but that was a long time aho. i wuoldn't use these chips nowadays
<nicksydney> wakks...you have used this baby before :)
<nicksydney> any special compiler or just GCC will do ?
<wpwrak> it's an 8051, so you need sdcc (or commercial compilers)
<nicksydney> this one http://sdcc.sourceforge.net/
<wpwrak> yeah
<nicksydney> ahhh very late the page shows up
<nicksydney> hmmm..checking out the code for that project ..the server is very slow :(
<nicksydney> wpwrak: in what project you were using that IC ?
<wpwrak> idbg and also ben-wpan/cntr/
arielenter has joined #qi-hardware
<nicksydney> will look to idbg
<nicksydney> wpwrak: are you able to checkout code from the server qi-hardware.com
<nicksydney> mine stuc
<wpwrak> committed earlier today without problems. servers are sometimes a little fragile
<nicksydney> mm :()
<nicksydney> C8051 series costs less than a buck
<shevek> Is that in volume, or even single pieces?
<nicksydney> shevek: single
<nicksydney> wpwrak: was thinking was if package an OLED with a LED driver and allow it to be driven using I2C .. does it make sense ?
<wpwrak> well, depends ... of course, the oled already does SPI, so you could use that
<nicksydney> hmm..true
michael_lee has joined #qi-hardware
<nicksydney> wpwrak: this kind of IC http://www.silabs.com/Support%20Documents/TechnicalDocs/cp2104.pdf is normally a "pure" usb chip correct ?
<nicksydney> wpwrak: so when we plug board that has that chip to linux it will be identified using 'lsusb' correct ?
<shevek> Yes, I've used that one and it worked without a problem, similar to an FTDI chip.
<shevek> Or maybe not.
arielenter has quit [Read error: Connection reset by peer]
<shevek> Which is CP2102.
<shevek> It seems to be very similar, though.
<nicksydney> shevek: yeah looks similar
<nicksydney> shevek: when you tried that chip what kind of USB id does it show when doing lsusb ?
<whitequark> DocScrutinizer05: tektronix 456 sells on avito for about $100 ;D
<whitequark> ahh, it's broken though
<nicksydney> the problem is most of the driver are in Linux
<nicksydney> so can't be used in project using Cortex-M series
<nicksydney> interesting http://nut-bolt.nl/2012/carambola/
<nicksydney> hmm...seems like a faster process that can run around 320Mhz or above + OpenWRT will do the trick
<nicksydney> ahhh so wifi uses 2.4ghz and even receiver like nordic also 2.4ghz so the difference is the comm protocol between the 2 devices that differentiate it
<nicksydney> so that means we can even create a 2.4ghz module from scratch and determine what protocol we want to communicate with the other end
<nicksydney> ahhh this is better http://arduino.cc/en/uploads/Main/arduino-Yun-schematic.pdf can see the big picture now
michael_lee has quit [Ping timeout: 264 seconds]
michael_lee has joined #qi-hardware
nicksydney has quit [Remote host closed the connection]
nicksydney has joined #qi-hardware
nicksydney has quit [Remote host closed the connection]
nicksydney has joined #qi-hardware
wej has joined #qi-hardware
<DocScrutinizer05> whitequark: did you check your CNC?
<DocScrutinizer05> whitequark: btw Galden droplet test finished. I can't *see* any more of the liquid, which doesn't mean it vanished. Rather I guess it simply spreaded across the glass so much that it became invisible
<DocScrutinizer05> I might try some powder and see if it sticks somewhere
apelete has joined #qi-hardware
xiangfu has quit [Quit: leaving]
<whitequark> DocScrutinizer05: no scope, duh
<nicksydney> interesting topic on Telegram protocol http://unhandledexpression.com/2013/12/17/telegram-stand-back-we-know-maths/
<nicksydney> someone from Russia found a weak spot for it http://habrahabr.ru/post/206900/
<whitequark> yeah, I don't know what they made it for, except a serious case of NIH
<whitequark> overall telegram is just a whatsapp clone, like durov's previous project, vk.com--a facebook clone
<nicksydney> yeah it's a clone
<nicksydney> clever how that guy was able to find the flaw
<nicksydney> http://mobilecg.hu/ now open sourced
panda|w530 has quit [Ping timeout: 244 seconds]
FDCX has quit [Ping timeout: 272 seconds]
FDCX has joined #qi-hardware
rz2k has joined #qi-hardware
FDCX has quit [Remote host closed the connection]
FDCX has joined #qi-hardware
<whitequark> DocScrutinizer05: oh you mean, check it with soundcard scope
<wpwrak> you should look at NXP. they have even more ARMs ;-)
<DocScrutinizer05> whitequark: maybe even just start with probing voltages on motor coils. Check them right after power up of controller, with no PC attached
<whitequark> hm
<DocScrutinizer05> check the optocoupler output levels
<DocScrutinizer05> should all be same with no PC attached, right?
<whitequark> yes, they're pulled up at lpt side
<DocScrutinizer05> ooh, those are only for output?
<DocScrutinizer05> anyway, check them, I seen them going nuts several times
<whitequark> well, there are optocouples for input too
<whitequark> but they're not relevant here
<DocScrutinizer05> for some weird reason optocouplers seem not be the most reliable of all conponents
<DocScrutinizer05> why do you think so?
<nicksydney> wpwrak: for some reason NXP is very expensive compared to ST, SiLabs or Atmel
<whitequark> DocScrutinizer05: um, why would they be?
<DocScrutinizer05> when a input OC has a hit, it might inject bogus signal to stepper
<whitequark> wait, here I use input/output in relative to PC
<DocScrutinizer05> meh
<DocScrutinizer05> I don't
<DocScrutinizer05> ;-)
<DocScrutinizer05> you have an ideal circuit to debug. You got 3 identical sub-circuits to compare
<DocScrutinizer05> should be easy to spot where X circuit differs from both Y Z
<DocScrutinizer05> have to run. Meet Nik
<whitequark> o/
<whitequark> ultrasound transducer. basically same thing as before, but now inside blood vessels
<nicksydney> it's freakin' tiny
<nicksydney> mad !
<nicksydney> how do they manufacture it
michael_lee has quit [Ping timeout: 244 seconds]
xiangfu has joined #qi-hardware
<wpwrak> the siglent sds2000 series may also be interesting competition to the rigol ds2000. very similar features, apparently decent quality, can have 4 analog channels, has 8 digital channels (MSO) as well, you even get an (IMHO not very useful) signal generator :)
<wpwrak> that seems to be a new trend: integrate basic signal generators in scopes.
<DocScrutinizer05> well, when it actually can generate arbitrary signals, then I can see some usecases
<wpwrak> should have an AWG, yes. still ... i have a function generator (with AWG capability) and i never use it. should have bought a frequency counter :(
<wpwrak> most of the time, when i need some signal, it's something digital. and out comes the ben ... ;-)
<wpwrak> ben + UBB are pretty much key pieces of my lab. for virtually (*) all the in-circuit programming i do lately, it's the ben that's providing the brains
<wpwrak> (*) except when starting with the KL25. but thanks to their firmware not even supporting the next relatively minor upgrade in the series, i was forced to move to my own solution there as well. of course using ben + UBB ...
<DocScrutinizer05> some digita signal is an arbitrary signal in my book
<wpwrak> yes, that's what i mean. AWG = Arbitrary Waveform Generator
<whitequark> btw: acrylic lives fine through 20sec of 270°C
<whitequark> another fun thing, while heating up that board I pointed a bright light source tangentially to it
<whitequark> and I think I watched epoxy transition to glass
<whitequark> and back
<whitequark> the problem with it, I can't seem to dispense it properly
xiangfu has quit [Remote host closed the connection]
rz2k has quit []
<wpwrak> nicksydney: oh, and when looking for scopes, you want to stay away from the likes of owon and hantek. they're cheap but unfortunately it shows.
<nicksydney> wpwrak: gotcha
<wpwrak> atten also seems to have a lousy reputation. gw instek, so-so. there's a bunch of more obscure brands, too.
dandon_ has joined #qi-hardware
dandon has quit [Ping timeout: 252 seconds]
dandon_ is now known as dandon
<nicksydney> Rigol seems the logical brand
<nicksydney> ok seems like Bitcoin is going to be packing up soon and disappear .. poof ! http://www.cnbc.com/id/101442439
<wpwrak> that's what the establishment would really like to happen ;-)
<wpwrak> (rigol) the siglent 2000 does actually look pretty impressive from what i read about it. might be a worthy competitor for the rigol DS2000 series. still very new, though.
<whitequark> mtgox was far from a good exchange
<wpwrak> for the lower price range, rigol DS1074Z for sure. can't beat that one :)
<whitequark> I mean, you had to jump through a number of hoops which would make traditional banking proud
<whitequark> and could withdraw money exactly 2 times a year
<whitequark> also, customer service rivaling cable isps in quality
<wpwrak> my cable isp is pretty decent. the adsl ones seem evil, though
<whitequark> wpwrak: I was more thinking, US cable ISPs
<whitequark> they're proudly occupying 2nd lowest customer satisfaction index
<whitequark> hm: https://btc-e.com/news/199 "2. The highest levels of security are already in place at BTC-e, and the company regularly uses external professional advice to further increase the security of our clients.
<whitequark> errr not that
<whitequark> "1. BTC-е is at its peak of financial strength with the record levels of clients and capital adequacy. The company plans to start publishing financial statements, verified by an external audit, on a regular basis."
<whitequark> what kind of company deliberately seeks transparency? oh horror
arielenter has joined #qi-hardware
arielenter has quit [Quit: Leaving.]
rz2k has joined #qi-hardware
dos1 has joined #qi-hardware
zwick has joined #qi-hardware
arielenter has joined #qi-hardware
arielenter has quit [Quit: Leaving.]
arielenter has joined #qi-hardware
pcercuei has joined #qi-hardware
larsc has quit [Ping timeout: 252 seconds]
larsc has joined #qi-hardware
pcercuei has quit [Quit: dodo]
zwick has quit [Remote host closed the connection]
rz2k has quit [Read error: Connection reset by peer]
arielenter has quit [Quit: Leaving.]
arielenter has joined #qi-hardware
arielenter has quit [Client Quit]
arielenter has joined #qi-hardware
arielenter has quit [Quit: Leaving.]
arielenter has joined #qi-hardware
arielenter has quit [Quit: Leaving.]