We’ve all heard of the smoke test ... [Janis Alnis] came up with this diesel exhaust monitor that measures the opacity of his car’s emissions. The sensor itself is quite simple, and mimics ...

With a bit of software wizardry, it’s even possible to differentiate between house dust and smoke by ... a graph of sensor readings on the LCD. A first test in the exhaust stream of his car ...

along with an arduino-compatible evaluation kit. Built around the recently released ADPD188BI optical smoke sensor, it comes with a “data package for algorithm development including more than 1,000 ...