REFLECTOR: New Subscriber

[Brian Michalk]

I used to embed Slackware linux into a 32MB MTD flash ... Google me and 
you'll see the problems I ran into.

After I was done, the system was rock solid.  No need to mount the flash 
read/write.  I took an idea from the auto MP3 guys and ran with that.  
Now flash prices are cheap.  256 MB is plenty for a Debian system with 
Perl and other bells and whistles.

In the my airplane, I have a VIA EPIA MII motherboard for ENTERTAINMENT 
running Windows with a hard drive.
The second CPU for flight management is a Linux machine on Advantech 
Biscuit PC with 512MB flash, no rotating disks.

I think the high capacity 2.5 inch drives are more of a liability than 
an asset.  Only one platter there, go with the lowest capacity you can 
find to keep those bits spread out.  I now work at a place doing some 
embedded work.  I have some interesting Bonnie graphs of hard drive 
performance vs fan speed.  Lower capacity drives do not have the problem.

I never knew mil-spec fans were so expensive.  2" diameter muffin fan: 
$1250.

Scott Derrick wrote:
> Those large drives are nice but theres really no need for that much
> storage for an embedded PC. Plus $4,000 for 128 GB of HD space is pricey!
>
> You can get solid state 4GB drives for $100 from emphase,
> http://www.emphase.com/products  industrial rated with autoleveling..
>
> I run embedded PC's with Linux, and embedded Windoze on 4GB with no
> problem at all.
>
> Scott
>
>   
>> Suggestion on storage... use the new solid state drives for whatever OS
>> you
>> use. Fast, but more important, no issues with vibration or altitude. Hard
>> disks need air preasure inside the box to keep the heads flying above the
>> disk surface. They do vent.
>> Supertalent has a SATA 128GB solid state drive.... as does MTron and
>> Samsung
>> Matt
>>   -----Original Message-----
>>   From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
>> Behalf Of Alex Balic
>>   Sent: Sunday, January 13, 2008 6:54 PM
>>   To: 'Velocity Aircraft Owners and Builders list'
>>   Subject: Re: REFLECTOR: New Subscriber
>>
>>
>>   Hi Joe-
>>
>>   Can you give me that particulars on your PC and monitor program?- I have
>> a
>> 7" touchscreen installed, but have not found a suitable computer- would
>> prefer to find one with solid state memory- not sure what you have used..
>>
>>
>>
>>   Alex
>>
>>
>>
>>
>> ----------------------------------------------------------------------------
>> --
>>
>>   From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>> Behalf Of Joe Ewen
>>   Sent: Sunday, January 13, 2008 10:21 AM
>>   To: Velocity Aircraft Owners and Builders list
>>   Subject: Re: REFLECTOR: New Subscriber
>>
>>
>>
>>   Hi Bill,
>>
>>   Welcome.  Project here is a 173 RG with 20B rotary engine, PC/Touch
>> Screen
>> monitoring, AHRS, moving map etc.  Am looking towards first flight in
>> spring
>> and hoping to be operational over the summer.  Located in SC.  One of our
>> routine trips will be to Anderson to see our grandson.
>>
>>
>>
>>   Joe
>>
>>
>>
>>
>>
>>
>>
>>     ----- Original Message -----
>>
>>     From: Bill Walker
>>
>>     To: reflector at tvbf.org
>>
>>     Sent: Monday, November 26, 2007 9:24 AM
>>
>>     Subject: REFLECTOR: New Subscriber
>>
>>
>>
>>     Hi All,
>>
>>
>>
>>     I'm Bill Walker and a XL-5 RG builder here in Indy. Here are my
>> airplane
>> specifics:  4 yrs into the build, Performance Engines IO-550 with equal
>> length ceramic coated headers and 2 collectors, Aerotronics panel, all
>> electric with dual alternators, and dual PC-680 batteries. The airframe is
>> structurally done, the engine is in, the underside is in final primer and
>> the gear is in final paint. The wiring is just now being completed. I am
>> ready to install a custom designed PreOiler this week, and the pitot
>> system
>> by the end of the year. I hope to have it in the air by late summer next
>> year.
>>
>>
>>
>>     I've made lots of changes to the kit from the control system to the
>> seat
>> design.  I'll post some pics soon.
>>
>>
>>
>>     Anyone interested in an easy little change that could mean a lot: Dip
>> the output shaft of the Aileron Trim copier motor into Plastidip tool
>> coating material for about three or four coatings. Now, add a fourth wrap
>> of
>> the trim string and you will have a system with much better "stiction",
>> but
>> will still slip when at the ends of system travel are achieved.
>>
>>
>>
>>     If anyone has already posted this, I apologize for not going
>> throughout
>> the archives.
>>
>>
>>
>>
>>
>>
>> ----------------------------------------------------------------------------
>>
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>
>
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