Hats off to you, genedangelo! I retired last year after about 40 years of work but I am still programming. I think that we as programmers are lucky to be in a profession where our personal interest and professional work can coincide. More importantly, we can carry our interest well into retired life. This is a golden age for people like us: we can buy microcontrollers for peanuts or we could have a supercomputer-like cluster in the cloud (for a brief period) for a reasonable amount of money. And anything in between.