Made my debut into electronics many moons ago servicing tv's when they still used valves. Now back after a very long absence (now aged 73) into a whole new world. My main interest at the moment is automating various aspects of my aquariums. Quickly came to realise that Arduino's and the like are the way to go as they can replace whole swathes of discrete components in software. Luckily I do have some experience of programming but more than a little rusty on the detail.