ScienceHackadayabout 3 hours ago
Build a Cable Modem for Arduino
4 min read
Michael Wiebusch's Hackaday Europe talk covers transmission line theory and demonstrates a cable modem built with an Arduino. The device uses a directional coupler made from resistors and an op-amp to send TTL signals bidirectionally over a single coaxial cable. No modulation or demodulation occurs.
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