Questions about use of PC104 connector for CubeSat boards
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 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:
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 possition 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 ---
William,
I'm afraid there is no "golden standard." CAPE-1 used the PC104 connectors also, but they were placed for convenience not by any standard. I believe CAPE-2 is moving away from these in favor of a backplane design and I'm not sure what other CubeSat programs are doing.
Jonathan Wagner
On Wed, Nov 3, 2010 at 11:30 AM, William Leijenaar pe1rah@yahoo.com wrote:
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 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:
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 possition 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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participants (2)
-
Jonathan Wagner -
William Leijenaar