Soldering irons

A soldering iron is a hand tool used in soldering. It supplies heat to melt solder so that it can flow into the joint between two workpieces. For well over 4000 years mankind has known how to join metals together by soldering. In the 1800s and early 1900s soldering irons were still heated by flame.

Internet Of Things “DIY” Door Sensor This is a home automation IoT door sensor project based on ESP8266 NodeMcu module. This IoT device sends notification to your smart phone when door changes state (opens or closes). This could be useful for other applications also  - for example connect to some alarm sensor…

Big LED video display technology

 The largest LED video display in all of sports article tells thatMercedes-Benz Stadium, the future home of the Atlanta Falcons and MLS expansion team Atlanta United FC, will feature the largest LED video display in sports. The 360-degree halo display will be part of the retractable roof.Engineered by Daktronics, the halo video board is 58