Hi I am sorry for bothering you with an urgent question; I had an IR light barrier connected to a piece of work of mine. Yesterday it found out that it's too slow, and so I decided to buy a laser light barrier. I connected it to a 12 V DC adapter (it works!). Now I want to connect it to my Arduino …

URGENT ! Question for connecting a light barrier

system April 28, 2012, 12:33pm 7

It is a pnp as I found out.

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