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C++ Arduino Python Java
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Paul Hubbard firstname.lastname@example.org Dec 7 2011 This project is an evolution of the 'office-weather' project: http://github.com/phubbard/arduino-buildbot You can see the data at https://pachube.com/feeds/22374 This version is a simplification - removing the buildbot hooks, and planning on adding an external sensor node via Xbee. Think 'simple indoor-outdoor weather station', only over engineered, less reliable and more fun to hack. Hardware requirements: * Arduino http://arduino.cc/ or many other sources * Ethernet shield http://www.sparkfun.com/products/9026 * Dallas Semiconductor DS18B20 precision digital temperature sensor. http://www.sparkfun.com/products/245 * Sparkfun TEMT6000 light sensor eval board http://www.sparkfun.com/products/8688 * Ohmic Instruments SC-600 humidity sensor and signal conditioning module. http://www.ohmicinstruments.com/pdf/SC-600.pdf About $15, quite cheap for a sensor this nice. You need an external RC lowpass, so two more components in the circuit. See the PDF. * Optional mini breadboard http://www.sparkfun.com/products/8800 Service requirements: * Pachube account Software requirements: * Arduino plus OneWire library Current status and functionality: * Poll the hardware and pushes an update to Pachube * Converts temp to floating point -reads humidity -corrects humidity for temperature -reads raw light value * I had reliability problems with Ethernet and Zigbee, so the current code uses a server-side python app and USB. Notes: * Generating the payload for Pachube was a bit tricky. * Pachube API in separate file, going to move feed ID to config.ini To-do: * Solar-power Arduino in watertight enclosure. * Need to calibrate light sensor and correct for temperature