| RS-485 or RS-422 buses are still widely used in industry for access control, video surveillance and many other applications. However, the st...
All items tagged with Circuit and communication (3)
| In the previous article in our series of projects on DIY highly secure communications [1], it was shown how to build a secure tamper-evident...
| The advantage of a touch witch over a traditional, mechanical, witch is that its operation is not degraded by wear and tear.