**** BEGIN LOGGING AT Sun May 21 03:00:03 2017
May 21 05:40:59 * nerdboy goes to find some duct tape for jkridner ...
May 21 05:43:13 <thetransformerr[> nerdboy: I saw maxim board, it seems to like that it has its own processing using microcontroller
May 21 05:43:35 <thetransformerr[> and we already have two microcontoller with beaglebone
May 21 05:45:23 <thetransformerr[> Since I am not that much into electonics and PCB stuff, I wanted to know is it too much diificult to implement circuits using ideas from board like these and other anemometer  completed projects
May 21 05:52:13 <nerdboy> not sure i get what you're asking
May 21 05:53:01 <thetransformerr[> I actually asked two things at same time
May 21 05:53:39 <thetransformerr[> so I wanted to ask why do we need maxim board when we already have microcontroller with us
May 21 05:54:59 <thetransformerr[> ---------------------------------------------
May 21 05:55:06 <thetransformerr[> which you might answer it has sensor driving circuit, so my another ques was cant we implement that circuit ourselves?
May 21 06:05:45 <ravikp7[m]> thetransformerr: I think as ds2 said, hacked hw ckt boards would be more time consuming to troubleshoot as they are more error prone. That's why he suggested to go for the maxim board
May 21 06:07:10 <ravikp7[m]> And in gsoc we're supposed to be working more on sw than hw :)
May 21 06:08:07 <thetransformerr[> yeah but I wanted to point out that it would be wastage/redundancy of resources and would decrease the appeal of project to open source community
May 21 06:13:16 <ravikp7[m]> Yeah, I understand. Let's wait for mentors to make the final call.
May 21 06:14:16 <ravikp7[m]> This project is really interesting and challenging
May 21 06:15:09 <thetransformerr[> it many times feels like it is so trivial, and some times the complexity just overwhelm me
May 21 06:16:05 <thetransformerr[> beacusa bb is so much powerful, having tons of features, it is a chaalenge to determine the feature that must be used
May 21 06:20:37 <ravikp7[m]> thetransformerr: what ultrasonic sensors other successful annemometer projects have used?
May 21 06:21:53 <thetransformerr[> they have used transreceiver type transducers, that can act as transducer and reciver but not at same time
May 21 06:22:35 <thetransformerr[> I had shared a picture of circuit earlier here
May 21 06:22:49 <thetransformerr[> can you see it
May 21 06:23:04 <thetransformerr[> I guess it was 2 days ago
May 21 06:32:58 <ravikp7[m]> I can see many circuits shared by you. Not sure which one you're talking about
May 21 06:34:50 <thetransformerr[> there are two one is labeled as analog circuits and another is labeled as digital circuit
May 21 06:35:11 <thetransformerr[> but I think may be they wont make sense without this pdf
May 21 06:35:14 <thetransformerr[> this is the pdf
May 21 06:35:33 <thetransformerr[> https://matrix.org/_matrix/media/v1/download/matrix.org/IURSRyYmCzCajMFrIgfZEhsK
May 21 06:35:59 <thetransformerr[> If you get some free time please read it..
May 21 06:38:21 <ravikp7[m]> Yeah, sure. But I guess only after 24. Exam on tommorow and on 23 :(  and also have to complete intro video by 24 :)
May 21 06:38:33 <thetransformerr[> no problemo :)
May 21 06:38:52 <thetransformerr[> you are currently in which sem??
May 21 06:39:05 <ravikp7[m]> 6th sem
May 21 06:39:14 <thetransformerr[> and uni??
May 21 06:39:28 <ravikp7[m]> IP university
May 21 06:40:20 <nerdboy> http://www.maxbotix.com/performance.htm
May 21 06:41:13 <nerdboy> not sure the maxim board will do what we want
May 21 06:41:31 <nerdboy> although these might
May 21 06:45:16 <thetransformerr[> I would get back to you
May 21 06:51:19 <ravikp7[m]> Hm, these sensors seem excellent​ for the project
May 21 06:52:13 <ravikp7[m]> weather proof..
May 21 07:04:32 <nerdboy> yeah, some are kinda expensive
May 21 07:04:47 <nerdboy> blows "cheap" right out the door...
May 21 07:05:09 <thetransformerr[> I say too much expensive some are about $199
May 21 07:06:06 <thetransformerr[> but if they are perfect for us still then price would be lower than commercial ones
May 21 07:09:37 <nerdboy> check the minimum range
May 21 07:09:58 <nerdboy> "less that 30 cm will be reported as 30 cm"
May 21 07:10:34 <nerdboy> the HCSR04 goes down to 2 cm i think
May 21 07:11:55 <thetransformerr[> these boards might prove useful in case only when they can report the time taken to reach target
May 21 07:12:41 <nerdboy> ^^ that one has minmal data sheet but it does have a timing diagram
May 21 07:13:06 <nerdboy> sometimes simpler is a better "fit"
May 21 07:13:31 <thetransformerr[> but they report the reurn time and I can't think of way that we can use to distinguish the time taken to reach target and time taken to return from target
May 21 07:14:25 <thetransformerr[> these didtance sensors I guess ignore the effect of wind speed because they take time of flight as simple as dividing by 2.
May 21 07:15:02 <thetransformerr[> I havent yet seen the dastasheet but was telling the general observation
May 21 07:17:10 <nerdboy> yes, we need to get one to listen and one to send
May 21 07:17:46 <nerdboy> the maxbotix ones can according to the docs
May 21 07:18:50 <thetransformerr[> and do they need some sort of driving circuit
May 21 07:19:28 <thetransformerr[> or they just take a simple instruction type of trigger like high/low pin??
May 21 07:44:04 <nerdboy> depends which one
May 21 07:44:27 <nerdboy> they all have different interfaces
May 21 07:44:43 <nerdboy> i put more data sheets in the google-y drive
May 21 16:13:50 <thetransformerr[> nerdboy: the sensors you shared today dont report time but they output distance directly and I cant figure out any simple method to extaract the time of flight from distance
May 21 16:18:32 <thetransformerr[> I think we should first develop a software solution assuming some sort of mechanism already existing to drive sensors
May 21 16:21:21 <thetransformerr[> by tuesday, I would share a document stating plans to implement such solutions, and once we develop system that takes into account every task like pin diagram,adc, user space transfer, then
May 21 16:21:49 <thetransformerr[> we should try to tackle sensors problem
May 21 17:03:28 <nerdboy> with an eye towards precise timing that could be a plan...
May 21 17:04:28 <nerdboy> but, i was also wondering if we could switch you back to seismometer project
May 21 17:04:37 <nerdboy> not sure that's been done before
May 21 17:05:16 <thetransformerr[> also I wanted to ask what is eCAP(enhanced capture) feature is used for, present in beaglebone
May 21 17:05:44 <nerdboy> no idea
May 21 17:07:04 <thetransformerr[> seismometer project, that also sounds nice, but I guess anemometer can also be done, with some efforts and learning from  already completed projects
May 21 17:21:27 <nerdboy> thetransformerr[: were you looking at this?  http://processors.wiki.ti.com/index.php/AM335x_PWM_Driver's_Guide
May 21 17:22:10 <thetransformerr[> yeah exactly
May 21 17:23:34 <thetransformerr[> I figured out that ePWM can surely be used in our project, and was wondering if eCAP can solve our problem of ADC and TOF determination
May 21 17:24:44 <thetransformerr[> and best thing is in that case interaction with PRU would be reduced by a very large scale and thus may allow us to use it for another good use
May 21 17:41:13 <nerdboy> so you mean use ecap for event capture/timing?
May 21 17:41:31 <nerdboy> not actual data capture i assume...
May 21 17:42:11 <nerdboy> don't forget the "heavy pinmux" warning
May 21 17:42:32 <nerdboy> need to make sure enough pins are available
May 21 17:43:02 <nerdboy> pretty sure disabling hdmi should free up enough
May 21 17:43:26 <thetransformerr[> yeah I sort of calculated free pins after hdmi disable
May 21 17:43:45 <thetransformerr[> there were around 28 gpio
May 21 17:44:12 <thetransformerr[> and out of them 17 were taken by PRUDAQ
May 21 17:45:39 <nerdboy> did you try making a timing diagram for all that?
May 21 17:47:42 <thetransformerr[> actually I have few things in mind that are conflicting with each other due to less information, so I couldnt draw a timing diagram
May 21 17:48:10 <thetransformerr[> although I might be able to draw a possibele diagram by tomm
May 21 17:48:28 <thetransformerr[> any suggestions from you??
May 21 18:19:08 <nerdboy> i meant incorporating the ecap events/timing
May 21 18:20:20 <thetransformerr[> no because I cant actually figure out how to use eCAP for us
May 21 18:20:49 <nerdboy> need to look at the latest kernel drivers in ti-dev kernel
May 21 18:21:09 <nerdboy> everything on ti forums/etc so far looks older
May 21 18:21:56 <thetransformerr[> until now I referred from techninal reference manual for amm335x
May 21 18:22:14 <thetransformerr[> I would surely check out kernel drivers
May 21 18:22:17 <nerdboy> what version/date?
May 21 18:22:46 * nerdboy refreshing kernel checkouts
May 21 18:23:59 <thetransformerr[> it is printed last updated "march 2017" in technical reference manual , however i dont know the exact version no.
May 21 18:38:42 <nerdboy> looks like this is the latest => http://www.ti.com/lit/ug/spruh73p/spruh73p.pdf
May 21 18:45:25 <nerdboy> might need to add some driver code and/or hack dts
May 21 18:46:26 <thetransformerr[> I find DTS to be promising
May 21 18:48:10 <nerdboy> tale a look at 4.9.28-ti-rt-r34 and 4.4.62-ti-rt-r103
May 21 18:48:41 <nerdboy> *latest TI releases
May 21 18:49:21 <nerdboy> easy to build a deb package if they're not in the apt repos yet
May 21 18:50:20 <thetransformerr[> would you please point out which drivers I should focus on from these kernels
May 21 19:02:02 <zeekhuge> thetransformerr[: Hi, I think beaglescope will be of help in the project. Can you point me to a place you have documented the PRU requirements for the project ?
May 21 19:04:44 <thetransformerr[> well I havent yet elaborated the specific role of PRU in project, and also at the time of proposal writing, I mainly focused on tof determination and capablities of PRU
May 21 19:05:00 <thetransformerr[> however this might give you some idea
May 21 19:05:34 <thetransformerr[> http://elinux.org/GSoC2017_sonic_anemometer_proposal#WorkFlow_for_Data_Acquistion
May 21 19:31:25 <nerdboy> i was talking about the pwm/ecap code for starters
May 21 19:32:01 <nerdboy> we need to know what features are there/not there
May 22 01:14:47 <nerdboy> also, you should make a card with the stretch-iot image
May 22 01:15:02 <nerdboy> some of the jessie packages are kinda old...
May 22 01:15:18 <nerdboy> thetransformerr[: ^^
May 22 01:28:35 <nerdboy> and let's start with linux-image-4.4.62-ti-r104
May 22 01:29:00 <nerdboy> more modules/firmware available than for 4.9
**** ENDING LOGGING AT Mon May 22 03:00:01 2017