Bringing a Vintage Telegraph into the Digital Age

I recently inherited a key on board (KOB) telegraph that my late grandfather used to practice Morse code with when he was a kid (Figure 1). A little bit of curiosity of how it would work and a little bit of displeasure from seeing it sit and collect dust, I began a journey to resurrect the old machine and develop some software to bring it into the digital age. If you’re eager to see the final result, or just don’t want to read, skip to the end for a video demonstration.

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