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

William Leijenaar pe1rah at yahoo.com
Wed Nov 3 09:30:17 PDT 2010

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 
connector (or is it PCI-104 ?), and some other features ;-)

The PC104 is a good choice for having a standarized 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:

"The CubeSat Kit Bus utilizes the same physical connectors as the 
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 possition is, and if this is now "the golden 
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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