How to build an electronic wind vane, "biplastic" thermometer, solar panel, and more. This webpage provides information on how to make an inexpensive electronic windvane that displays the outside wind direction on a display indoors. It is made from easy to find parts. If you are resourceful, it can be constructed at a price far far below what you would pay for one commercially made. I also provide instructions on making a simple and low cost thermometer.