Added functions to translate array sizes between encoded and unencoded. Refactored and debugged decode7 function
Functions completed which allow encoded and unencoded array sizes to be compared.
Added simple test harness to load up Firmata and keep querying ultrasonic pin.
Possibly better to avoid sudo
Sanitised Ultrasonic query/request protocol by testing in EchoString-based Firmata sketch. Changed command byte to minimum application-specific number
Original EchoString Firmata sketch from Arduino 1.0 for reference
Moved EchoString to preferred location
Additions for testing Ultrasonic query and response within EchoString-derived sketch