I remember my father teaching me about some basic digital electronic using the parallel port. How to multiplex and use it as GPIO & primitive expansion bus.
Eventually, my father had some board using parallel port for stuff. Including a Dobson telescope control board (based on Mel Barters designs). I had half-write a program to control it from Visual Basic (there was some VB controls that allow to direct control of the parallel port). Sadly, the Dobson mount and the control board was lost when we move to a new house.
Eventually, my father had some board using parallel port for stuff. Including a Dobson telescope control board (based on Mel Barters designs). I had half-write a program to control it from Visual Basic (there was some VB controls that allow to direct control of the parallel port). Sadly, the Dobson mount and the control board was lost when we move to a new house.