Adding SCPI to Arduino Test Equipment

Make an item of test equipment that can respond to SCPI (IEEE-488.1) commands. including *IDN?, *OPT? and *TST

Make an item of test equipment that can respond to SCPI (IEEE-488.1) commands. including *IDN?, *OPT? and *TST

To encode the Hardware Revision number, so that we know what the version numbers of the main PCB is and is available to the Microcontroller.