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Glad to hear that you used the code with no problems! The project doesn't use a laser. The PIR sensor it uses detects motion by measuring changes in the infrared (heat) levels emitted by surrounding objects. The PIR sensor I used costs about $13.
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Hi Jorette. It's definitely possible. I'll do a little research and then reply with some instructions on how to do it.
Spark Core - no need to write an iPhone app!
Cheap and effective Sous Vide cooker (Arduino powered)
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