I Built a Morse Code Beacon With an E-Paper Screen — Here’s How One Button Runs the Whole Thing
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Press a button once and a little e-paper screen’s message starts blinking out in tones through a speaker — no app, no touchscreen, just…

 

 Press a button once and a little e-paper screen’s message starts blinking out in tones through a speaker — no app, no touchscreen, just…Continue reading on Medium » Read More IoT on Medium 

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By ali