On Wed, Jan 15, 2014 at 09:59:51AM +1100, Russell Coker wrote:
Digital IO ports are required as well as a serial port. I guess it's possible to use DTR/DSR and RTS/CTS on a second serial port if a board does everything else right, only 2 digital outputs are needed.
The current systems have 2 ethernet ports, 1 for Internet access and 1 for debugging, we could survive with only 1 port if everything else is good.
The device needs to be designed for high temperatures, 70C operating temperature will do.
Searching Linux Gizmos shows some SODIMM ones that allegedly support -40 to +85C http://linuxgizmos.com/?s=ARM+extended+operating+temperature This one http://linuxgizmos.com/sodimm-style-arm-com-runs-debian-linux/ explicitly mentions Debian, but doesn't mention the required carrier board. The see also links at the bottom show others in the category.