วันอาทิตย์ที่ 9 กุมภาพันธ์ พ.ศ. 2557
Arduino + Ethernet Shield + Motion Sensor + Temperature Sensor + Google App Engine = Data Logger
http://www.instructables.com/id/Remote-Home-Automation-Example-Arduino-Etherne/
http://nuigarduino.wordpress.com/2012/03/29/arduino-ethernet-shield-motion-sensor-temperature-sensor-google-app-engine-data-logger/
For our project we wanted to create an Ethernet data logger that could take data from a temperature sensor and a PIR motion sensor. This would allow us to graph motion and temperature over time allowing users to know when a space was most in use and perhaps whether it was being heated effectively.See example website
Components:
- Arduino Uno
- Arduino Ethernet Shield
- Dallas Temperature Sensor (Waterproof so could be used externally)
- Tiny PIR Motion Sensor
Basic Description:
Arduino– The Arduino here connects
collects the temperature data and movement data to the Internet as a
client and posts data to the Google App Engine site every 60 seconds. An
external interrupt allows for motion to be detected and polled at any
time. The temperature is read just before the HTTP post is made.
Google App Engine – On this side the app
engine takes the data posted from the Arduino and stores it in a simple /
and probably inefficient database. If someone visits the site it uses
the google graph api to make a pretty neat graph of the data over time.
Images:
Schematic:
