A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

Online weather services are great for providing generic area forecasts, but they don’t provide hyperlocal data specific to your location. [Harald Kreuzer] needed both and built a Raspberry Pi Weather ...

First of all, I have a mental block when it comes to circuits for whatever reason. I can build my own computer, I built my own network in my house, and I'm currently building some drawers for my ...