Thanks Jack - some top tips there :-)? Up until a couple of years ago all my programming was PIC chips and assembler so I'm a bit of a novice with the Arduino and have learned on-the-job as it were.? Having struggled through Fortran and Pascal forty years ago, I've carefully avoided anything to do with C since then HI.? Time I bought a book I think.
Thanks again and 73, Martin - G4FKK