[amsat-bb] Re: Questions about use of PC104 connector for CubeSat

Ryan Caron rcaron at gmail.com
Wed Nov 3 13:23:28 PDT 2010

I'd suggest taking a look at AstroDev's He-100 offering, which uses the 
PC-104 card connector.


Page 7 has the pinout, Page 20 has placement

I would hesitate to use a board quite as large as that though, as it is 
highly optimized for the CubeSatKit, making use in other chassis 
difficult. I would suggest a slightly smaller board in line with 
Boeing's CS82 board factor. Slide 6 from this year's CubeSat Developer's 
Conference @ Cal Poly 

Are either of these the golden standard? Not exactly, but it is the 
closest thing I've seen to one. Ease of integration and flexibility are 
the key to getting your transponder flown.

Ryan Caron

On 11/3/10 12:00 PM, amsat-bb-request at amsat.org wrote:
> Message: 7
> Date: Wed, 3 Nov 2010 09:30:17 -0700 (PDT)
> From: William Leijenaar<pe1rah at yahoo.com>
> Subject: [amsat-bb] Questions about use of PC104 connector for CubeSat
> 	boards
> To:amsat-bb at amsat.org
> Message-ID:<844462.5173.qm at web31801.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
> Hello AMSATs,
> Work and home situation kept me away from having any ham time. But recently I
> had some time to continue with upgrading my LE005 transponder design with a
> PC104
> connector (or is it PCI-104 ?), and some other features;-)
> The PC104 is a good choice for having a standardized inter connection system on
> CubeSat projects. However, I seen some deviation in the placement standard of
> this PC104 connector.
>> From the following website I read:
> http://www.cubesatkit.com/content/electronics/bus.html
> "The CubeSat Kit Bus utilizes the same physical connectors as the
> industry-proven
> PC/104 bus, but in an alternate physical location so as to avoid unintentional
> damage to PC/104 or CubeSat Kit modules."
> With my focus on: "...in an alternate physical location..."
> I would like to know what this position is, and if this is now "the golden
> standard"
> in CubeSat world ?
> My next worry will be the pin configurations. Is there any standard for CubeSat
> boards ?
> Next I would like to know how modules are controlled by the data bus.
> Is it like separate pins for PTT, TX, RX etc...
> Or with more smart communication with lines like: address bus, data bus, Clock,
> Interrupt lines etc. (similar to old ISA PC cards)
> Or maybe with I2C.
> I keep it to these questions for now...
> Next questions will follow out of the answers hihi...
> 73 de PE1RAH
> William Leijenaar

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