Date: Fri, 26 Sep 2003 20:30:59 -0400 (EDT) From: Daniel Eischen <eischen@vigrid.com> To: Wes Peters <wes@softweyr.com> Cc: hackers@freebsd.org Subject: Re: Wireless Embedded monitoring Message-ID: <Pine.GSO.4.10.10309262014040.11989-100000@pcnet5.pcnet.com> In-Reply-To: <200309261634.15646.wes@softweyr.com>
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On Fri, 26 Sep 2003, Wes Peters wrote: > On Tuesday 23 September 2003 15:55, Daniel Eischen wrote: > > On Tue, 23 Sep 2003, M. Warner Losh wrote: > > > In message: > > > <Pine.GSO.4.10.10309231430260.28875-100000@pcnet5.pcnet.com> > > > > > > Daniel Eischen <eischen@vigrid.com> writes: > > > : Anyone have any experience with PC/104 or other really small > > > : footprint platorms and FreeBSD? > > > > > > Yes. Works great. We've used FreeBSD on about two dozen different > > > single board computers. > > > > > > : We need to build a small box for equipment monitoring > > > : (temperature, pressure diff., vibration, indication). Just a few > > > : discrete inputs/outputs, and analog inputs would be good enough. > > > : The hard part may be sampling an A/D signal at up to 30KHz, so > > > : having the I/O card do the sampling and buffer it would > > > : probably be necessary. > > > > > > I'd recommend one of the Soekris boxes. > > > > > > : Any ideas on hardware (SBC, I/O board)? > > > > > > http://www.soekris.com is great. > > > > Yes, it looks nice. The form factor is just a bit > > larger than PC/104, especially with a PCCard plugged > > into its side. We'd also need some sort of general > > purpose I/O card which are fairly easy to find in > > PC/104 stacking modules. > > I'll join in the general chorus here. I had one of the very early > soekris boxes and found it to be a gem. If a 5x86 133MHz processor > meets your needs, you'll like it a lot. I haven't tried the net4801 > board, but I've worked with other Geode designs and if you need more > cpu, that'll probably do. Good luck. If they only made smaller PC/104 sized boards... We're trying to make our own system that doesn't end up being any larger than a competitor's system. Their system is housed in a metal box about 4"(W) x 2"(H) x 6.5"(L). They are using embedded Linux on an ARM processor with a DSP (SHARC ?) to handle the I/O. I was pointed at Advantech: http://www.advantech.com/products/Model.asp?Category_ID=1-D6LKE&bu= and have found similar PC/104 equipment at a few other vendors. Without doing much research (we usually build much larger VME based systems), there seems to be a lot of options in PC/104 modules. -- Dan Eischen
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