Hello Carl, from the application scenario that you mention I would consider the ethernet / ethernet-2-serial combination as overkill (at least from my point of view, I'm nevertheless not sure about what these devices cost, how large they are and what additional software problems you might have). I guess you could alternatively go with a uController based solution. Either you design that one on your own (there are e.g. ATMEL AVR controlers with 2 UARTS + you can combine these via their other I/O lines) or you consider using a number of e.g. Basicx "miniboards". http://www.basicx.com/ These are based on ATMEL uControlers, can be programmed in a BASIC dialect (with a fast run-time available) and can easily be combined in kind of network where multiple controlers share kind of a "message bus". The operating system on the devices takes care of bus arbitration. => there's a very active mailing list and lots of example applications. Additionally - if you can control your serial data sources (with CTS/RTS) => so that you can decide when they send - you may have a chance to do a "time multiplex" on the input lines (so that your system works in synchronous instead of a purely asynchronous way). regards Ralf On Sat, 17 Apr 2004, Carl Nilsson wrote: > Bryan: > thanks for prompt and helpful reply. I like the first option best. Can > you point this techo novice to manufacturers of (a) ethernet cards for CF > or SD and (b) serial to ethernet adapters, without undue time spent on your > part? > I have been following this board for some time. I gathered from the > archive an article by Doug Sutherland from 2001 entitled "Re Mobile > Sensorium" that looked promising, but (a) I have been unable to contact him > re further info and (b) maybe technology has moved on a bit in the last > three years. I want to feed a PDA in an ultralight aircraft with data > from various instruments that generally output in serial RS232 - ranging > from 9600 baud to 38,400 baud. --------------------------------------------------------------- Dr. Ralf Ackermann _Multimedia Communications |/ | | |\/| Merckstrasse 25 |\ |_| | | 64283 Darmstadt, Germany Tel.: (+49) 6151 16-6138 Fax: (+49) 6151 16-6152 --------------------------------------------------------------- http://www.kom.tu-darmstadt.de/~rac --------------------------------------------------------------- -- Subscription/unsubscription/info requests: send e-mail with subject of "subscribe", "unsubscribe", or "info" to
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