You may not need a smart card, but once you know how to communicate between an Arduino and the PLC, you could do many different projects that leverage other I/O devices and code available on the ...

The Arduino talks to a USB card reader using a USB host shield. Then it communicates with the PLC using an RS232 link and the DF1 protocol that most Allen Bradley PLCs understand.

A new Kickstarter project aims to give Raspberry Pi and Arduino boards Internet access throughout the world with an add-on that allows integration with a SIM card. SparqEE Cellv1.0 would need to ...