DZone News Hadoop Summit San Jose: Data Hacks, Demos, and Raspberry Pi DZone News Also connected to the Raspberry Pi were temperature and humidity sensors. The data collected by these sensors is sent back to AWS IoT and stored in the so-called “thing shadow”. The shadow was then read out by NiFi for each one of your messages

See the rest here:
Hadoop Summit San Jose: Data Hacks, Demos, and Raspberry Pi – DZone News