Solder Iron Foot Switch

This switch is a must for people who solder alot. It prevents the iron from overheating. Its very simple and is very cheap. Some irons like mine can heat back up fast after they have not been cooled down alot. You will need the following parts and tools: 1 foot pedal switch SPST 1 duplex …

Serial Port Holiday Light Flasher

In this post I will show you how to flash Christmas lights by the serial port. Now you can with Holiday232. This serial port can switch between 4 different lights by using 2 SPDT relays and both RTS and DTR of the relay. As you may be wondering when looking at the schematic why I’m …