Two weeks ago, I shared a post about repairing soldering iron at home. Initially, I attempted to fix it by unwinding and rewinding the heating coil myself. However, I suspect the rewinding wasn’t done correctly, as the repair didn’t work. Eventually, I decided to purchase a new coil and used it to successfully repair the soldering iron.
Before installing the new coil, I checked for continuity between its two ends, but there was none. I’ve documented the entire repair process in a detailed video, which you can watch below. The video is mostly unedited, except for a background song added toward the end.
Now that the soldering iron is working, I'm considering whether to look for a circuit that could protect the heating coil from future damage—some form of protection to prevent it from breaking again. I suspect the coil may have failed because I left the soldering iron on for too long. There might also be issues related to the AC power supply, as power outages and load-shedding are common where I live.
That said, I might skip adding any additional protection circuit and instead focus on completing some of my earlier projects where I need soldering work. One of them is building a permanent ESP32-based Wi-Fi controlled RC car, which I had previously prototyped. I’ve also built a few power supply circuits, FM and AM circuits but my main goal now is to create an uninterruptible power supply (UPS) for the router and switches used in my WISP project. For UPS I wonder I could Arduino to detect main AC failure and turn on the car inverter that I have lying around. I think I can use the Automatic Changeover Switch with Ardiuno.
That's it for this note, I'll stop writing here for now.
