Assignment 5 – Jenkins

For Assignment 5 I looked at USA Today’s Ghost Factories Case Study. The Journalists used XRF scanners such as this to measure levels of things such as arsenic and lead and found “dangerous levels” of lead in 21 neighborhoods across 13 states.

A sensor I found on Sparkfun was an IR Photo Interruptor. Basically, the sensor emits an infrared beam between two uprights. When the beam is broken, the sensor knows when something passed through. An application of this would be a punch card reader, allowing only certain punchcard patterns to be let through security like an ID Card reader or tallying how many punches people got on their card at the end of an event. The latter would be really useful for measuring engagement at events such as food truck festivals or beer / wine tastings!