Use your arduino to measure the sensors (photoresistor in your case) and let it compose the content of the tweet.Let the Arduino send it to your PC over a serial wire.(you can test this part separately)Replace the serial monitor with an application that receives the tweet and let it post on the net. This can be done in almost any programming language, from python to C#. YOu need to combine two things in essence - read a string from a serial port - and - post a tweet -.Google is your friend here Succes,
well I checked some website about this but don't know the first thing about python or C++ or php. I need someone to guide me the right way
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