Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

2017-08-09 15:23 GMT+02:00 Luke Kenneth Casson Leighton : > next set... > GND shielding parallel to the differentials is interrupted quite often. Those GND tracks act as shields, for emission and reception. I'd try to put as much parallel GND as possible. And trace the parallel GND

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

the case for GND around differential pairs cant hurt, maybe even can help. But is it better to have GND in plane below that actually is doing same things? If there is no clear path for signal to go back then I guess put GND in parallel is good but if you have clean GND below than make it somehow

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

2017-08-10 10:18 GMT+02:00 Luke Kenneth Casson Leighton : > On Thu, Aug 10, 2017 at 9:01 AM, mike.v...@gmail.com > wrote: >> 2017-08-09 15:23 GMT+02:00 Luke Kenneth Casson Leighton : >> Make sure the'res as much solid GND on the layer above and

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

On 10 August 2017 at 10:45, Luke Kenneth Casson Leighton wrote: > --- > crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 > > > On Thu, Aug 10, 2017 at 9:38 AM, mike.v...@gmail.com > wrote: > > 2017-08-10 10:18 GMT+02:00 Luke Kenneth

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 On Thu, Aug 10, 2017 at 10:21 AM, mike.v...@gmail.com wrote: > 2017-08-10 10:45 GMT+02:00 Luke Kenneth Casson Leighton : >> On Thu, Aug 10, 2017 at 9:38 AM, mike.v...@gmail.com >>

Re: [Arm-netbook] python coding help needed (sin, cosine, blah blah)

https://math.stackexchange.com/questions/2386333/how-do-you-find-the-length-and-angle-of-a-belt-between-two-pulleys-both-outer-e/ hiya david: okay! so someone kindly edited the question to put the proper links in, so the question's actually understandable. so... benson with the diagrams

[Arm-netbook] my favourite dilbert... evvah!

http://dilbert.com/strip/1994-02-06 still beautifully relevant today ___ arm-netbook mailing list arm-netbook@lists.phcomp.co.uk http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

On Thu, Aug 10, 2017 at 9:01 AM, mike.v...@gmail.com wrote: > 2017-08-09 15:23 GMT+02:00 Luke Kenneth Casson Leighton : >> next set... >> > GND shielding parallel to the differentials is interrupted quite > often. because there's simply not enough space to do

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

On Thu, Aug 10, 2017 at 9:14 AM, Hrvoje Lasic wrote: > the case for GND around differential pairs cant hurt, maybe even can help. > But is it better to have GND in plane below that actually is doing same > things? If there is no clear path for signal to go back then I guess put

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 On Thu, Aug 10, 2017 at 9:38 AM, mike.v...@gmail.com wrote: > 2017-08-10 10:18 GMT+02:00 Luke Kenneth Casson Leighton : >> On Thu, Aug 10, 2017 at 9:01 AM, mike.v...@gmail.com >>

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

2017-08-10 10:45 GMT+02:00 Luke Kenneth Casson Leighton : > On Thu, Aug 10, 2017 at 9:38 AM, mike.v...@gmail.com > wrote: >> 2017-08-10 10:18 GMT+02:00 Luke Kenneth Casson Leighton : >>> On Thu, Aug 10, 2017 at 9:01 AM, mike.v...@gmail.com >>>

[Arm-netbook] Conflict-free minerals

I just thought I'd make a poke about this. Been a bit busy lately to contribute to the liberating chip or the standards thread, but will be getting back on those soon. No one has really mentioned conflict-free minerals, or does so often in the libre community. It's kinda like adding just one

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

On Thu, Aug 10, 2017 at 12:33 PM, mike.v...@gmail.com wrote: > Ah that explains a lot indeed. Too bad the infill isn't visualized. i can do a flood-fill and screenshot the gerber files, i'll do that for a final check. > Sadly the space between the HDMI connectors is to

Re: [Arm-netbook] HDMI High-Frequency Layout: Recommendations

On Thu, Aug 10, 2017 at 11:14 AM, mike.v...@gmail.com wrote: > I found quite some room. See attachments. Red: Easy improvement. yep, all those will be covered by flood-fill: no need to do them manually. wiggles3_mv, the HXT0 and HXT1 GND segment on the left middle, that