is there any limitation on how many shield an arduino can handle? like maximum current..
If you look at the Atmega 328 datasheet you will see that each I/O pin is limited to a max of 40mA and 20mA would be more sensible. There are also limitations on the total current so you can't use all pins at full current at the same time.
I suspect you are far more likely to run into conflicts between shields which want to use a particular pin for different purposes. That would only need 2 shields.
...R
so it would be just fine to connect these shields together?:
GSM
easy VR
zigbee
ethernet
dazmehard:
so it would be just fine to connect these shields together?:
GSM
easy VR
zigbee
ethernet
I have no idea. I have never used any of them.
Have you calculated how much power they will draw from the various Arduino pins and checked if that is within the Atmel specifications?
Have you checked whether the shields will conflict with each other?
...R