Back to the IR, I use this sensor quite often and it works great. Pretty cheap too. The output isn't linear though if it matters to you.
http://www.acroname.com/robotics/par...P2Y0A02YK.html
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Back to the IR, I use this sensor quite often and it works great. Pretty cheap too. The output isn't linear though if it matters to you.
http://www.acroname.com/robotics/par...P2Y0A02YK.html
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