Particulate 2.5PM, 10PM Arduino Sensor using a SIMCOM Sim900 GPRS
Data upload to http://www.ThingSpeak.com
Particualte sensor is SDS011: http://inovafitness.com/en/Laser-PM2-5-Sensor-SDS011-35.html
Original Arduino Code from: http://forum.futurashop.it/viewtopic.php?f=60&t=65172
Arduino MEGA used becuase it has 4 Hardware Serial ports. SDS011 & SIM900 each use one port. Enables future sensors & serial device connectivity.