hey everyone ;
i have a simple question
is it possible to link 4 or 5 gsm shield and an ethernet shield togather
and they do commands without using computer only using internet cable and a source of power
i am thinking about starting a commercial project
i want that the gsm shields make some operation guided by the ethernet shield which upload results to a php link
and thank s for advance
your help with some words will avoide huge researches in google =(
is it possible to link 4 or 5 gsm shield and an ethernet shield togather
4 of them are possible but not as easy as stacking them together. You'll have to re-route the serial pins to other pins to be able to communicate.
and they do commands without using computer only using internet cable and a source of power
No, this is not possible, you need a computer (although not one with an operating system), in the above case an Arduino Mega2560 would be a viable option.
i want that the gsm shields make some operation guided by the ethernet shield which upload results to a php link
and thank s for advance
Again, shields are just IO devices (in most cases), you'll need an Arduino (or similar computer) to control them.
Of course if you add up the cost of the mega and the gsm shields and the e-net shield and any other bits you find it cost more than a cheap end PC which can do it all any way.
Mark