Dammerel
Hi all

Approx what size program can fit in a rpi3 and/or arduino? 

Thanks Andrew 
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thiagoralves
The storage size on a RPi3 or any RPi board depends on the size of the SD Card. Given that the size of a regular SD Card nowadays is in the order of GB, I would say that the size of the PLC program is irrelevant for the available storage. OpenPLC programs are only a few kilobytes in size (0.000001 GB), which means that it is pretty much impossible for a single OpenPLC program to fill up your card.

For the Arduino boards, they actually don't hold the program. They act only as I/O, so the size of the program also doesn't matter.
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Dammerel
Thanks so on the rpi3 a program can be downloaded and than the rpi3 can be standalone (not connected to pc) but not with arduino
Andrew  
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thiagoralves
That's correct. In fact, you can also connect the Arduino board to the RPi as well to have an embedded system with more I/Os.
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