[dorkbotpdx-blabber] Anybody have a DIP-format RS232<->3.3V Level Shifter?

Russell Senior russell at personaltelco.net
Mon Oct 25 02:35:35 EDT 2010


>>>>> "David" == David Madden <dorkbot at mersenne.com> writes:

David> On 10/24/2010 08:18 PM, Russell Senior wrote:
>> OpenWrt uses opkg (which is similar if not quite as featureful as
>> Debian's dpkg).  You can add/remove packages, list installed
>> packages, list files associated with packages, etc.  What else do
>> you want?

David> All the package tools do that...the problem is, I only have
David> about 200MB, so I have to cut stuff down pretty brutally.
David> That's fine: the essential stuff will easily fit.  But when you
David> delete non-essential bits of packages, pkg managers tend to get
David> confused and unhappy.  Then you have to start doing everything
David> yourself.  Ugh.

OpenWrt is designed to go on devices with *much* less than 200MB of
flash.  As a result, non-essential files (manpages, etc) are not
included in the packages and aren't installed.  The package manager
won't complain about removing stuff if there is nothing to left to
remove!  

I replaced an Ubuntu-based Metrix Pyramid system on a 64Meg flash
Soekris net4826 board, which fit, with OpenWrt and it all fit in
something like 8 meg of flash.  That included a basic webserver, dhcp,
dns, SNMP, ssh, openvpn, etc.

200 MB of flash seems positively gargantuan in comparison.

I have installed x86 OpenWrt on a PC Engines Alix (which uses CF cards
for storage, and it's hard to find CF cards these days with less than
a gigabyte) and the flashed image is 8MB.  There is an auxilliary
filesystem (by default 48Meg, but there is a knob to make it any size
you want) that I'm using 3% of.

David> It's a really nice package.  If you just need network file
David> storage or webserver or something, for 6W and $25, you can't go
David> wrong. [...]

Where did you get yours?


-- 
Russell Senior, President
russell at personaltelco.net


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