Halloween: Season for Java Embedded Internet of Spooky Things (IoST) (Part 2)
By hinkmond on Oct 16, 2013
To start out our ghost hunting here at the Oracle Santa Clara campus office, we first need a ghost sensor. It's pretty easy to build one, since all we need to do is to create a circuit that can detect small fluctuations in the electromagnetic field, just like the fluctuations that ghosts cause when they pass by... Naturally, right?
So, we build a static charge sensor and will use a Java Embedded app to monitor for changes in the sensor value, running analytics using Java technology on a Raspberry Pi. Bob's your uncle, and there you have it: a ghost sensor.
So, go out to Radio Shack and buy up these items:
shopping list: 1 - NTE312 JFET N-channel transistor (this is in place of the MPF-102) 1 - Set of Jumper Wires 1 - LED 1 - 300 ohm resistor 1 - set of header pins
Then, grab a flashlight, your Raspberry Pi, and come back here for more instructions... Don't be afraid... Yet.
See the posts for the full series on the steps to this cool demo: