My interest in ham radio lead to a career in electronics and I hold a degree in Electrical and Computer Engineering from the University of Wisconsin. (Go Badgers!) I have been employed in the electronics industry since 1972 and have worked on well over 150 different projects including industrial controls, scientific instrumentation, NASA spacecraft, medical devices and computers ranging from micros to mainframes.
I retired in July 2017 but still run my electronics and amateur radio company Unified Microsystems and take on occasional consulting projects.
My main professional interest is embedded systems. Embedded systems use small microcontroller ICs in dedicated applications to control, measure, monitor, or otherwise interface to the outside world.
The Electronics Page has information on electronic projects and a tutorial series on microcontroller interfacing.