Support taking hostname from text file on /boot

[alecthegeek]

For LCA, Nodebot days etc it's useful to provide students with a standard image with all the tools etc
required for session.

Proposed solution

On boot look for a file on /boot that contains a hostname
to be used.
If the file is not present do nothing.

NB File may be extended in future for other values

of interest to @ajfisher @projectgus and @geekscape

[ajfisher]

This might take a bit of work but I have to have to get ws2812 code working
anyway.

If you've used a sphero before, each one identifies with a unique 3 color
sequence (15 color types = 3375 combos) so like mine is RGO (red green
orange). This identifier is then used for blue tooth name etc.

Am thinking that with a little scripting we might be able to do the same on
first boot of the image and it constructs that, then sets up the Wi-Fi AP
the same way, and the hostname too.

Might resolve some of this, and make each one identifiable.

On Sun, 23 Nov 2014 19:58 Alec Clews [email protected] wrote:

For LCA, Nodebot days etc it's useful to provide students with a standard
image with all the tools etc
required for session.

Proposed solution

On boot look for a file on /boot that contains a hostname
to be used.
If the file is not present do nothing.

NB File may be extended in future for other values

of interest to @ajfisher https://github.com/ajfisher @projectgus
https://github.com/projectgus and @geekscape
https://github.com/geekscape

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#13.

[alecthegeek]

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Hash: SHA1

Suppose a user does not have a LED strip?

Also, there still needs to be a unique hostname created somehow. Getting
users to mount the /boot partition on their laptop and editing the
machine.local.config file seems easiest?

On 24/11/2014 09:18, ajfisher wrote:

This might take a bit of work but I have to have to get ws2812 code working
anyway.

If you've used a sphero before, each one identifies with a unique 3 color
sequence (15 color types = 3375 combos) so like mine is RGO (red green
orange). This identifier is then used for blue tooth name etc.

Am thinking that with a little scripting we might be able to do the same on
first boot of the image and it constructs that, then sets up the Wi-Fi AP
the same way, and the hostname too.

Might resolve some of this, and make each one identifiable.

On Sun, 23 Nov 2014 19:58 Alec Clews [email protected] wrote:

For LCA, Nodebot days etc it's useful to provide students with a standard
image with all the tools etc
required for session.

Proposed solution

On boot look for a file on /boot that contains a hostname
to be used.
If the file is not present do nothing.

NB File may be extended in future for other values

---

Alec Clews [email protected]
http://about.me/alecthegeek
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[ajfisher]

So the SimpleBot shield Angus made has 4xWS2812s on it. And was thinking a
little script that produced it on first boot if the file isn't present (or
hostname=lcanodebot or something)

On Mon, 24 Nov 2014 10:04 Alec Clews [email protected] wrote:

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Suppose a user does not have a LED strip?

Also, there still needs to be a unique hostname created somehow. Getting
users to mount the /boot partition on their laptop and editing the
machine.local.config file seems easiest?

On 24/11/2014 09:18, ajfisher wrote:

This might take a bit of work but I have to have to get ws2812 code
working
anyway.

If you've used a sphero before, each one identifies with a unique 3 color
sequence (15 color types = 3375 combos) so like mine is RGO (red green
orange). This identifier is then used for blue tooth name etc.

Am thinking that with a little scripting we might be able to do the same
on
first boot of the image and it constructs that, then sets up the Wi-Fi AP
the same way, and the hostname too.

Might resolve some of this, and make each one identifiable.

On Sun, 23 Nov 2014 19:58 Alec Clews [email protected] wrote:

For LCA, Nodebot days etc it's useful to provide students with a
standard
image with all the tools etc
required for session.

Proposed solution

On boot look for a file on /boot that contains a hostname
to be used.
If the file is not present do nothing.

NB File may be extended in future for other values

---

Alec Clews [email protected]
http://about.me/alecthegeek
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=/tbG
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#13 (comment)
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[projectgus]

I think this is a really neat idea, at least for the LCA MiniConf
event it should help a lot. Even 4 colours on 4 LEDs is 256
combinations which is probably enough for us.

We can probably seed the colour combo from the MAC address or I guess
just make it up at random.

Maybe we can talk it through some more tomorrow night?

Angus

On Sun, Nov 23, 2014 at 06:35:54PM -0800, ajfisher wrote:

So the SimpleBot shield Angus made has 4xWS2812s on it. And was thinking a
little script that produced it on first boot if the file isn't present (or
hostname=lcanodebot or something)

On Mon, 24 Nov 2014 10:04 Alec Clews [email protected] wrote:

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Suppose a user does not have a LED strip?

Also, there still needs to be a unique hostname created somehow. Getting
users to mount the /boot partition on their laptop and editing the
machine.local.config file seems easiest?

On 24/11/2014 09:18, ajfisher wrote:

This might take a bit of work but I have to have to get ws2812 code
working
anyway.

If you've used a sphero before, each one identifies with a unique 3 color
sequence (15 color types = 3375 combos) so like mine is RGO (red green
orange). This identifier is then used for blue tooth name etc.

Am thinking that with a little scripting we might be able to do the same
on
first boot of the image and it constructs that, then sets up the Wi-Fi AP
the same way, and the hostname too.

Might resolve some of this, and make each one identifiable.

On Sun, 23 Nov 2014 19:58 Alec Clews [email protected] wrote:

For LCA, Nodebot days etc it's useful to provide students with a
standard
image with all the tools etc
required for session.

Proposed solution

On boot look for a file on /boot that contains a hostname
to be used.
If the file is not present do nothing.

NB File may be extended in future for other values

---

Alec Clews [email protected]
http://about.me/alecthegeek
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