Adieu les parasites ! Créer une liaison Fibre Optique pour Arduino (Test réel)

Can you really replace an electrical cable with light? In this video, I conduct a real-world test of data transmission via optical fiber between two Arduinos. The goal isn't pure performance, but rather to understand how an optical link works, from the electronics to the light. We'll see: how a UART signal is converted into a light signal how it propagates through an optical fiber how it's converted back at the receiving end and most importantly… what actually happens when it doesn't work Using an oscilloscope, we analyze the signals, identify a logic inversion problem, and correct the circuit. Real-world measurements To delve deeper, I use field equipment: an optical photometer to measure overall losses an OTDR (optical time-domain reflectometer) to locate defects in a fiber So we move from theory… to real-world measurement. Setup: Arduino Uno UART Transmission 74HCT14 (Schmitt trigger) 2N2222 Transistor HFBR Fiber Optic Modules (Avago) Single-mode/Multimode Fiber Optic Why use fiber? It's not just about bandwidth. Fiber offers: Total electrical isolation No common ground Complete EMC immunity No electromagnetic interference In some environments, it's essential. Music by Karl Casey @WhiteBatAudio CHAPTER: 00:01 Introduction 05:11 Open MCT - Presentation 00:47 How does light carry information? 05:57 Example of a measurement using a photometer 10:44 Example of a measurement result from a reflectometer 14:07 Introduction to circuit design 17:48 PCB assembly and soldering 19:29 First test... 22:02 Final tests... 23:28 Conclusion 24:24 Bonus End bonus I finish with a real-world test using a long-range fiber. No comment. 👍 Support the channel If you learned something from the video: 👍 Like 💬 Comment with your feedback/experience 🔔 Subscribe for future projects Music by Karl Casey @WhiteBatAudio #Arduino #FiberOptic #Electronics #DIY #Oscilloscope #UART #OTDR #Measurement #Tech #Engineering