| Today, phone-connected front-door cameras and comms systems are ubiquitous. But they weren't as common just a few years ago. Here's a DIY sm...
All items tagged with communication and Circuits & Circuit Design (4)
| Back in 1977, for most people, if you weren’t home to hear a ringing phone, the moment was gone forever. Unless, that is, you built Elektor’...
| The MAX7219 is a very useful and versatile display driver that can drive up to 64 LEDs independently. It’s well-known, but existing tutorial...
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| RS-485 or RS-422 buses are still widely used in industry for access control, video surveillance and many other applications. However, the st...