| 01:13 | fsteinel_ | joined the channel |
| 01:16 | fsteinel | left the channel |
| 01:26 | jucar1 | left the channel |
| 01:41 | jucar | joined the channel |
| 02:04 | intracube | left the channel |
| 07:43 | se6astian | joined the channel |
| 07:43 | se6astian | good morning
|
| 11:24 | se6astian | left the channel |
| 12:15 | se6astian | joined the channel |
| 12:16 | Bertl | morning folks!
|
| 12:37 | se6astian | left the channel |
| 12:37 | se6astian | joined the channel |
| 13:09 | se6astian1 | joined the channel |
| 13:10 | se6astian | left the channel |
| 13:40 | se6astian1 | left the channel |
| 13:40 | se6astian | joined the channel |
| 13:44 | se6astian | left the channel |
| 15:33 | se6astian | joined the channel |
| 15:41 | se6astian | hello!
|
| 15:43 | jucar1 | joined the channel |
| 15:45 | jucar | left the channel |
| 15:49 | mgielda | joined the channel |
| 15:49 | mgielda | hellp
|
| 15:49 | mgielda | *hello
|
| 15:49 | mgielda | wasn't crying for help ;)
|
| 15:49 | se6astian | hello :D
|
| 15:50 | Bertl | hey mgielda! how's going?
|
| 15:50 | mgielda | is Herbert here?
|
| 15:50 | Bertl | indeed he is :)
|
| 15:51 | mgielda | hi :)
|
| 15:51 | mgielda | I should use my nickname instead I suppose
|
| 15:51 | Bertl | whatever rows your boat ...
|
| 15:51 | mgielda | changed nick to: thalain
|
| 15:52 | thalain | I don't know if it rows my boat
|
| 15:52 | thalain | I don't have a boat :(
|
| 15:53 | Bertl | okay, so I heard (from sebastian) you want to help with (pre-)Beta development
|
| 15:56 | thalain | well, if we can
|
| 15:57 | thalain | depends on where you are. I saw some extra boards in the recent announcement, how about the sensor board itself?
|
| 15:57 | Bertl | I'm sure you can, we just have to figure out what you would like to do and where you can help best
|
| 15:58 | Bertl | yes, we did a few test boards for the clock chips and what you probably saw in the announcement a first version of the dual sd board
|
| 15:59 | thalain | yup
|
| 15:59 | thalain | so, the sensor board - I heard you did ver1, tested, did some corrections and now, is it in production?
|
| 16:00 | Bertl | you are talking about the sensor frontend used on the AXIOM Alpha?
|
| 16:04 | thalain | I thought you wanted to use a different on the beta?
|
| 16:04 | thalain | i.e. different sensor
|
| 16:05 | Bertl | yes, indeed, but we didn't make any board for the KAC sensor yet
|
| 16:06 | thalain | so, are you working now on putting together the original sensor + microzed?
|
| 16:08 | Bertl | no, not at all, currently we are testing sub-parts of the future AXIOM Beta 'sensor' board, which is more like the main board, i.e. sensor plus certain peripherials plus power supply and connectors for all kind of stuff
|
| 16:08 | Bertl | give me a second to show you the concept
|
| 16:09 | Bertl | http://vserver.13thfloor.at/Stuff/AXIOM/BETA/beta_pre03_1024x640.png
|
| 16:09 | Bertl | what you see in the middle is the Beta board which directly plugs into the microzed
|
| 16:11 | Bertl | it is supposed to features an FTDI for interfacing and jtag, a PIC32 microcontroller for low speed general I/O, a bunch of sensors and a 'sensor' socket
|
| 16:11 | Bertl | on the left and the right you can see so called I/O modules which directly plug into the beta board via connectors on the top/bottom
|
| 16:18 | Bertl | so the main question is, are you more interested in working on the software side or the hardware side (from the discussion so far I'd say hardware :)
|
| 16:31 | intracube | joined the channel |
| 16:32 | thalain | well, we were kind of looking to speed you up, which is not so easy to do while there is no hardware :) did you start with the Beta board design as such? I see the image so "start" you did, but how advanced are you?
|
| 16:33 | thalain | the problem is e.g. different tools and such, so I believe it would be hard to help on the hw design itself, but perhaps with e.g. testing and debugging when you have produced the first batch
|
| 16:34 | Bertl | I think I know what parts we need by now (for the beta board) but we still need to do some testing first I guess
|
| 16:34 | thalain | we just would need to produce one/two more pieces once the design is done and ship the extra one(s) to us
|
| 16:34 | Bertl | yes, that is no problem, if you really want to help right now with hardware, then the power supply would be the best place
|
| 16:34 | thalain | what kind of testing do you have in mind? some pre-Beta boards to test if the parts are OK?
|
| 16:36 | Bertl | mostly if the parts are suited for the task and if they work as intended
|
| 16:36 | Bertl | I like to build and test such things systematically :)
|
| 16:38 | Bertl | so, we did a test board for the dual power supply, and for example, I'm not very happy with the chosen (suggested) components and the overall performance
|
| 16:38 | Bertl | I'm currently missing the tools (and time) to do systematic testing on variations of the board
|
| 16:39 | mars_ | what's the problem with the power supply?
|
| 16:42 | Bertl | as you know, we decided to go for a two step regulation, the first one is done by a switching regulator, the second by LDOs to reduce noise
|
| 16:43 | mars_ | yes, i remember that
|
| 16:44 | Bertl | the existing test board mainly focuses on the switcher
|
| 16:44 | Bertl | and I went with the suggested part there (basically from the datasheet)
|
| 16:45 | Bertl | now those parts are somewhat problematic to assemble at home, rather expensive compared to alternatives and seem to give suboptimal performance
|
| 16:46 | Bertl | so the required testing is twofold:
|
| 16:47 | Bertl | first, we need to figure out if something is wrong in the design by properly testing the performance of the current layout
|
| 16:48 | Bertl | and then we need to apply those tests to variations in the components (I already have picked a bunch of alternative parts) to see how they perform
|
| 16:49 | Bertl | this also includes reducing the noise where possible while keeping it small to fit onto the beta board
|
| 16:50 | mars_ | so, those boards show too much noise?
|
| 16:51 | Bertl | not just that, they also gave bad performance in the lower input voltag range and with light loads
|
| 16:53 | danieel | getting good performance in corner cases is more complex than avoiding those corner cases
|
| 16:57 | Bertl | indeed
|
| 16:59 | mars_ | so, do we need those corner cases?
|
| 16:59 | Bertl | well, we want to handle a wide input voltage range
|
| 16:59 | danieel | light load.. solve it by hibernation/quick boot and complete power off
|
| 16:59 | Bertl | the switcher is designed to work between 5 and 40V, we can probably limit this to 6-35V or so
|
| 17:00 | Bertl | (although it would be nice to have the 5V input case working)
|
| 17:00 | danieel | what is the expected consumption?
|
| 17:00 | Bertl | on the output, we have the microzed and the devices from the Beta board
|
| 17:01 | Bertl | (including the sendor)
|
| 17:02 | danieel | in W ? :)
|
| 17:05 | Bertl | the switcher design is for up to 3W
|
| 17:24 | thalain | thanks mars_ for asking questions I would have had to ask :) doing too many things at once
|
| 17:24 | thalain | have to run now but will copy-paste all this to Peter, thanks Herbert for the explanations!
|
| 17:25 | Bertl | you're welcome!
|
| 17:28 | thalain | left the channel |
| 20:15 | niemand | joined the channel |
| 20:36 | niemand | left the channel |
| 21:25 | fsteinel_ | changed nick to: fsteinel
|
| 21:36 | jucar1 | left the channel |
| 21:47 | jucar | joined the channel |
| 21:59 | jucar | left the channel |
| 22:01 | jucar | joined the channel |
| 22:08 | jucar | left the channel |
| 22:18 | jucar | joined the channel |
| 22:52 | se6astian | good night!
|
| 22:53 | se6astian | left the channel |
| 23:21 | jucar | left the channel |
| 23:22 | jucar | joined the channel |
| 23:31 | jucar | left the channel |
| 00:17 | jucar | joined the channel |