Commodore Plus/4 signals morse code to LEGO plotter


The BASIC program to control the plotter


Entering a word to be plotted in morse code


Photo resistors receive information from black or white areas on the screen


The LEGO morse code plotter.
The engines are powered through relays controlled by the photo resistors.


LDR and relay schematics (click to enlarge)


The engine that does the paper feeding


The pencil lifted and lowered by another engine


The resulting morse code

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