80 year old Hobbyist. Low academic qualifications, Higher National Circt. In Servo Engineering circa 1971 , what ever that is. Earned a living for a few years as a RN Officer, then programming PLCs, then selling pneumatics then managing a Groupe of product support Engineers, (a bit like herding cats). Finally ran a very small company doing “Domestic Electrical installations”, Part P stuff! Now I just copy others code and try and get it to work on PlatformIO