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Re: [gpsd-dev] PPS over USB
From: |
Dave Taht |
Subject: |
Re: [gpsd-dev] PPS over USB |
Date: |
Sun, 6 May 2012 16:11:03 -0700 |
On Sun, May 6, 2012 at 3:48 PM, Gary E. Miller <address@hidden> wrote:
> Yo Terje!
>
> On Sun, 06 May 2012 23:56:38 +0200
> Terje Mathisen <address@hidden> wrote:
>
>> Eric S. Raymond wrote:
>> > Gary E. Miller<address@hidden>:
>> >> Ugh. The Garmin 18s are unsuitable for indoor use. The uBlox6
>> >> in the GR-601W works well in my basement.
>> >
>> > And in my office. Indoor usability is *strongly* desirable for
>> > this application. Gary is right, the Garmin 18 would not be a good
>> > match.
>>
>> The Garmin 18 was replaced by the 18x several years ago, wasn't it?
>
> Yes. I have an 18x but not tried it yet.
>
>> My default at-home S1 server has the original 18 with rooftop
>> antenna, a hand-soldered (for PPS) SURE board works fine indoors.
>
> I did the same for years at my office. The Garmin18 works fine when
> roof mounted. Not so good on the side of my house. So it was easier to
> buy a SiRFIII then to get the Garmin18 on my house roof.
>
>> BTW, I just picked up a NetGear 3800 for the BufferBloat firmware, I
>> intend to point that router at the local S1, which should result in
>> better timing than a PPS over USB solution.
I'm tickled. Stick with the current cero firmware tho... and we have
some cool new stuff happening in a week or two more. It did,
last I looked, run gpsd fine, you did have to do an opkg install of the
right kmod-serial-something.
> Yup. I would guess 10x to 20x better from my recent experience.
Heh. Don't count your eggs before you measure. When a box is running flat out
97% of the time spent in the interrupt handler, god knows what will happen.
http://www.bufferbloat.net/projects/cerowrt/issues/379
There are always heisenbugs.
(note the above is against an unreleased version of cerowrt, running
at the fastest speed yet achieved, where we found new problems)
>
> RGDS
> GARY
> ---------------------------------------------------------------------------
> Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
> address@hidden Tel:+1(541)382-8588
--
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://www.bufferbloat.net
- Re: [gpsd-dev] PPS over USB, (continued)
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/06
- Re: [gpsd-dev] PPS over USB, dave taht, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Terje Mathisen, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/06
- Re: [gpsd-dev] PPS over USB,
Dave Taht <=
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Terje Mathisen, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Hal Murray, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Dave Taht, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Hal Murray, 2012/05/08
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/08