**** BEGIN LOGGING AT Wed Apr 05 03:00:04 2017
Apr 05 03:52:32 <kiran4399> ds2: there?
Apr 05 12:54:25 <thetransformerr> hii!!!!
Apr 05 15:57:13 <ordsen> hey m_w I'm thinking about how to divide log messages from serial devices.. Can I assume that every serial device will use a carriage return or EOL character?
Apr 05 15:57:32 <henrix_> hello everyone
Apr 05 15:58:29 <rma> hi there
Apr 05 15:58:33 <m_w> hello
Apr 05 16:01:51 <pmezydlo> m_w: hi, What can i do for beaglewire?
Apr 05 16:02:08 <m_w> pmezydlo: your computer back up?
Apr 05 16:02:24 <pmezydlo> yeah my computer is ready
Apr 05 16:02:35 <pmezydlo> for now on hdd
Apr 05 16:03:09 <m_w> pmezydlo: we just need to finalize the placement
Apr 05 16:03:14 <zeekhuge> present !
Apr 05 16:03:57 <thetransformerr> nerdboy: you there?? you were asking something about my google account??
Apr 05 16:05:24 <nerdboy> yeah, i have some docs from last year
Apr 05 16:11:12 <indu> Hello everyone
Apr 05 16:13:50 <thetransformerr> it is naveensaini.cse18@jecrc.ac.in or thetransformerr@gmail.com
Apr 05 16:14:32 <thetransformerr> I came in contact with last year candidate, on last year repository of sonic,
Apr 05 16:14:47 <thetransformerr> on github
Apr 05 16:16:11 <thetransformerr> it seems me to like he didn't dived into some basic research about calculation of time of flight
Apr 05 16:17:15 <pmezydlo> m_w: Do we need some package for elements?
Apr 05 16:17:25 <pmezydlo> I don't see package for oscillator?
Apr 05 16:17:40 <m_w> yup
Apr 05 16:18:27 <m_w> the diode for 2.5V, oscillator, and dipswitch if we need it
Apr 05 16:18:46 <m_w> some 3d models are missing too
Apr 05 16:21:34 <pmezydlo> m_w: 4 x dipswitch should be useful
Apr 05 16:22:13 <pmezydlo> I will look into it
Apr 05 16:22:36 <m_w> we will want to use a small smt one
Apr 05 16:22:38 <av500> zeekhuge: sec, inviting you over
Apr 05 16:23:04 <av500> zeekhuge: done
Apr 05 16:24:07 <pmezydlo> m_w: https://www.digikey.com/product-detail/en/cts-electrocomponents/219-4LPST/CT2194LPST-ND/223169
Apr 05 16:24:50 <m_w> should be fine
Apr 05 16:25:08 <m_w> I will push the version that I posted on G+
Apr 05 16:25:27 <m_w> you can shuffle the parts around and add the patterns that are missing
Apr 05 16:27:08 <m_w> pmezydlo: you okay with that?
Apr 05 16:27:25 <pmezydlo> yes, I have to learn how to do new package
Apr 05 16:30:01 <ravikp7> jkridner: Hi! You there?
Apr 05 16:32:45 <ravikp7> jkridner: did you test the updated u-boot binaries that I shared?
Apr 05 16:40:26 <m_w> pmezydlo: okay, let me commit and push
Apr 05 16:40:54 <m_w> pmezydlo: you can pull and see if you have any problems with the files
Apr 05 16:42:20 <pmezydlo> i don't see your commit
Apr 05 16:43:03 <m_w> pmezydlo: how about now?
Apr 05 16:43:27 <pmezydlo> yes now it's ok
Apr 05 16:45:32 <m_w> I think that we may have to localize the footprints
Apr 05 16:45:50 <m_w> let me know what shows up and what doesn't
Apr 05 16:48:32 <pmezydlo> this is a old board version with only 2 pmod
Apr 05 16:50:25 <m_w> yes
Apr 05 16:51:00 <m_w> I did not save those changes
Apr 05 16:51:42 <m_w> it was a hack and did not have the schematic changes just a mockup
Apr 05 16:53:16 <pmezydlo> ok I will try add dip switch,
Apr 05 16:53:33 <pmezydlo> That located was ok
Apr 05 16:57:43 <m_w> pmezydlo: so everything was there?
Apr 05 16:58:25 <pmezydlo> m_w: yes I don't see any error
Apr 05 16:59:59 <pmezydlo> m_w:now i will try create new footprint library
Apr 05 17:02:18 <m_w> pmezydlo: good
Apr 05 18:26:18 <pmezydlo> m_w:  What resistors for dip switch
Apr 05 18:26:27 <pmezydlo> i think 4,7k is to big,
Apr 05 18:30:41 <pmezydlo> ahh resistors are connected to 3.3
Apr 05 18:30:47 <pmezydlo> ok 4,7 is good
Apr 05 18:43:52 <m_w> pmezydlo: yeah anything in the K region is good
Apr 05 18:44:23 <m_w> we should consider using the same value for generic pullups
Apr 05 18:49:00 <pmezydlo> dip switch kicad_mod file is ready but I don't know how to add it to library.
Apr 05 18:50:15 <pmezydlo> m_w: I will make all footprints and you will add them
Apr 05 18:56:02 <pmezydlo> we can't have 4 pmod, all ice40 gpios are occupied
Apr 05 18:56:26 <pmezydlo> bga version has more gpio
Apr 05 18:56:46 <pmezydlo> we have only 3 pmod
Apr 05 18:56:53 <m_w> pmezydlo: open the pcb design, click preferences > footprint library preferences, click append with wizard
Apr 05 18:59:34 <m_w> pmezydlo: I see 21 free FPGA IO
Apr 05 18:59:58 <m_w> each PMOD takes 8
Apr 05 19:00:12 <m_w> 4 for the dip switch
Apr 05 19:01:45 <pmezydlo> i added 2 pmod, dip switch and I saw some disconnected sdram pins
Apr 05 19:02:04 <m_w> ooops
Apr 05 19:02:43 <m_w> hmmmm
Apr 05 19:03:31 <m_w> can we use the IO from the BBB for the dipswitch or maybe take out some of the LEDs?
Apr 05 19:04:32 <pmezydlo> 4 led should be enaught
Apr 05 19:05:13 <m_w> how many are we short?
Apr 05 19:06:54 <pmezydlo> 2
Apr 05 19:07:04 <pmezydlo> We need 7 for sdram
Apr 05 19:07:23 <m_w> hundreds of LEDs can be added via PMOD :)
Apr 05 19:08:39 <pmezydlo> What do you think about 4xled and 4xdip
Apr 05 19:08:42 <pmezydlo> no 2xdip
Apr 05 19:08:49 <pmezydlo> 4xled and 2xdip
Apr 05 19:08:51 <m_w> sure
Apr 05 19:09:13 <m_w> sounds like a nice tradeoff
Apr 05 19:09:31 <pmezydlo> sdram has external clock or has clock from ice40
Apr 05 19:10:06 <m_w> from ice40
Apr 05 19:18:26 <jkridner> ravikp7: you there?
Apr 05 20:04:48 <pmezydlo> m_w: I'm not sure which diodes should be good?
Apr 05 20:06:00 <m_w> for the 2.5V?
Apr 05 20:06:16 <pmezydlo> yes
Apr 05 20:07:37 <m_w> 2.5V shunt regulator
Apr 05 20:08:51 <m_w> lemme see if I can find a part number for you
Apr 05 20:09:58 <pmezydlo> If you can
Apr 05 20:11:45 <m_w> what is the required supply current?
Apr 05 20:12:47 <pmezydlo> I am already searching
Apr 05 20:14:55 <pmezydlo> m_w: 3.5uA
Apr 05 20:19:49 <m_w> CDBU0520 is listed on the reference designs
Apr 05 20:21:23 <m_w> https://www.digikey.com/product-detail/en/comchip-technology/CDBU0520/641-1332-1-ND/2021253
Apr 05 20:22:20 <m_w> not what I was expecting but it obviously works on the references
Apr 05 20:24:03 <pmezydlo> 20V and 500mA are you sure?
Apr 05 20:25:10 <m_w> the forward voltage is .36 to .47 V
Apr 05 20:25:26 <pmezydlo> oh I see
Apr 05 20:26:00 <m_w> so 2.94 - 2.83V
Apr 05 20:26:33 <m_w> that must be within tolerance on that pin or they would not have used it
Apr 05 20:28:14 <pmezydlo> we can use voltage regulator
Apr 05 20:28:45 <pmezydlo> In a small package
Apr 05 20:28:46 <m_w> this diode is much smaller
Apr 05 20:28:52 <m_w> 0603
Apr 05 20:29:10 <m_w> and it is on the icestick and ice40hx eval
Apr 05 20:29:29 <pmezydlo> ok I will add package
Apr 05 20:29:56 <pmezydlo> can I use 0603?
Apr 05 20:30:48 <m_w> yeah, I am looking at my ice40-hx8k breakout board
Apr 05 20:31:00 <m_w> it is on the bottom side
Apr 05 20:33:48 <m_w> diode footprints need polarity marking
Apr 05 20:35:44 <pmezydlo> kicad library has 0603 diodes
Apr 05 20:35:55 <m_w> SOD-523
Apr 05 20:36:06 <m_w> Diodes_SMD:SOD-523
Apr 05 20:37:55 <m_w> that looks a little small
Apr 05 20:39:32 <pmezydlo> ok I changed it
Apr 05 20:39:40 <m_w> good
Apr 05 20:40:09 <pmezydlo> ok I read net list and new packages looks good
Apr 05 20:41:02 <pmezydlo> can I relocated elements?
Apr 05 20:41:09 <m_w> pmezydlo: sure
Apr 05 20:41:34 <m_w> update the placement as you see fit
Apr 05 20:43:59 <m_w> you can use the screen shots from email for ideas for placement
Apr 05 22:02:34 <m_w> pmezydlo: how is it coming along?
Apr 05 22:02:54 <pmezydlo> I have just finished
Apr 05 22:03:34 <pmezydlo> Looks good
Apr 05 22:04:43 <pmezydlo> m_w: We need some improvements in the  elements placement
Apr 05 22:06:05 <pmezydlo> can you fix board cuts? I think I braked it
Apr 05 22:10:30 <m_w> what did you do?
Apr 05 22:13:28 <m_w> ah I see there is an error when attempting to go into 3d mode
Apr 05 22:14:02 <pmezydlo> I incrase the board,
Apr 05 22:15:43 <pmezydlo> I added cut lines but on 3d view you can see without the cut out corners
Apr 05 22:15:58 <m_w> yeah, if you zoom in you can see that the end points do not line up
Apr 05 22:16:02 <m_w> I will fix it
Apr 05 22:16:44 <pmezydlo> What do you think about this arrangement?
Apr 05 22:16:55 <m_w> looks pretty good
Apr 05 22:17:12 <m_w> very close to what we discussed
Apr 05 22:18:08 <m_w> you want to switch to right angle grove connectors?
Apr 05 22:18:53 <m_w> I have access to a pattern for them
Apr 05 22:20:12 <pmezydlo> yeah angle grove connectors like these from BeagleBoard green
Apr 05 22:20:53 <m_w> okay I will take this an finalize the placement
Apr 05 22:20:58 <m_w> good work
Apr 05 22:21:39 <pmezydlo> I like doing this
Apr 05 22:22:23 <pmezydlo> Can you upload a photo when you finish?
Apr 05 22:22:30 <m_w> of course
Apr 05 22:23:10 <m_w> would you like to post this on hackaday.io or similar?
Apr 05 22:23:49 <m_w> like I did for pocketbone: https://hackaday.io/project/19495-pocketbone-kicad
Apr 05 22:27:14 <pmezydlo> I think is a good idea
Apr 05 22:27:43 <m_w> pmezydlo: I think it is a good idea to share with the commmunity during development
Apr 05 22:28:21 <m_w> the project has already benefited from it because now we have 4 PMOD headers
Apr 05 22:28:52 <pmezydlo> I will prepare an short article tomorrow
Apr 05 22:29:18 <m_w> awesome
Apr 05 22:33:27 <tlwoerner> pmezydlo: m_w: awesome!
Apr 05 22:33:38 <pmezydlo> thanks
Apr 05 22:33:55 <m_w> oh look we are already famous :)
Apr 05 22:39:45 <pmezydlo> I have to go, bye
**** ENDING LOGGING AT Thu Apr 06 03:00:02 2017