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Discussion of precise time and frequency measurement

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Re: [time-nuts] inexpensive, black box, GPS or NTP based TTL time capture?

HM
Hal Murray
Wed, Oct 18, 2017 11:17 PM

This is one of the reasons I use beaglebone greens - soldered in eMMC so  no
need for SD card ...

The advantage of the SD card is that you can easily start over when your
"disk" gets trashed.

"Easy" of course is dependent on your opinion and talents.  I think you can
boot a BeagleBone from SD by holding down a button and put things back
together from there.  So no wires or extra hardware required, but you have to
research a new layer of HOWTOs.

--
These are my opinions.  I hate spam.

jimlux@earthlink.net said: > This is one of the reasons I use beaglebone greens - soldered in eMMC so no > need for SD card ... The advantage of the SD card is that you can easily start over when your "disk" gets trashed. "Easy" of course is dependent on your opinion and talents. I think you can boot a BeagleBone from SD by holding down a button and put things back together from there. So no wires or extra hardware required, but you have to research a new layer of HOWTOs. -- These are my opinions. I hate spam.
J
jimlux
Thu, Oct 19, 2017 12:27 AM

On 10/18/17 4:17 PM, Hal Murray wrote:

This is one of the reasons I use beaglebone greens - soldered in eMMC so  no
need for SD card ...

The advantage of the SD card is that you can easily start over when your
"disk" gets trashed.

"Easy" of course is dependent on your opinion and talents.  I think you can
boot a BeagleBone from SD by holding down a button and put things back
together from there.  So no wires or extra hardware required, but you have to
research a new layer of HOWTOs.

precisely so - hold the button and power up.

You can set up so that the contents on the SD just boot, or rewrite the
flash (10-15 mins).
I imagine that there's a way to "constantly" press the button with a
jumper, too.

Building that SD card image is a bit more complex than it needs to be.
You can download the image trivially, but modern consumer OS'es
basically don't make it easy to directly write to a device, and what
you're basically doing is burning a image to the SD card.

OTOH, the instructions ARE on the "getting started" page of the
beaglebone site.
http://beagleboard.org/getting-started

but it's way too many steps, and there's way too many "using your
favorite xyz utility"

On 10/18/17 4:17 PM, Hal Murray wrote: > > jimlux@earthlink.net said: >> This is one of the reasons I use beaglebone greens - soldered in eMMC so no >> need for SD card ... > > The advantage of the SD card is that you can easily start over when your > "disk" gets trashed. > > "Easy" of course is dependent on your opinion and talents. I think you can > boot a BeagleBone from SD by holding down a button and put things back > together from there. So no wires or extra hardware required, but you have to > research a new layer of HOWTOs. precisely so - hold the button and power up. You can set up so that the contents on the SD just boot, or rewrite the flash (10-15 mins). I imagine that there's a way to "constantly" press the button with a jumper, too. Building that SD card image is a bit more complex than it needs to be. You can download the image trivially, but modern consumer OS'es basically don't make it easy to directly write to a device, and what you're basically doing is burning a image to the SD card. OTOH, the instructions ARE on the "getting started" page of the beaglebone site. http://beagleboard.org/getting-started but it's way too many steps, and there's way too many "using your favorite xyz utility" > >