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Light Sensors

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Molotov13

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Light Sensors

PostFri May 22, 2015 11:41 am

Light sensor always output a HIGH signal even when in complete darkness, I also tried using the spanner on them and it didn't work. The electrician's tool bench isnt in the creative menu either.
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SuperNintendo

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Re: Light Sensors

PostFri May 22, 2015 12:11 pm

Yeah, Light Sensors don't work for me too.

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XsX

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Re: Light Sensors

PostFri May 22, 2015 1:00 pm

I cannot fix that. :)

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Re: Light Sensors

PostFri May 22, 2015 1:01 pm

Alrighty then. :sisi:
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Dylan

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Re: Light Sensors

PostFri May 22, 2015 2:06 pm

heheheehe, I laughed when I read that he said that...
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Jack

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Re: Light Sensors

PostFri May 22, 2015 2:26 pm

Light sensors, as the tooltip help states, generate an analog signal, not a digital signal. They can't directly be used without an Operational Device which is able to compare the light value with another value (for example to generate a high signal if it's below a certain value).

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Re: Light Sensors

PostFri May 22, 2015 2:28 pm

Interesting
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Molotov13

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Re: Light Sensors

PostFri May 22, 2015 4:16 pm

I still dont understand analog signals yet :mumble:
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tdgroebner17

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Re: Light Sensors

PostFri May 22, 2015 6:14 pm

something clever is supposed to go here... but whatever
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mastery51

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Re: Light Sensors

PostFri May 22, 2015 7:29 pm

So, you need a light sensor above ground to read the sun light. Then you need to put a light sensor below ground to read the light underground. Put a operational device in the center. Set the operational device to greater than symbol >.
Next, to make the underground sensor be higher than the above ground sensor you need to put a torch next to it. The Output can now be connected to as many light bulbs as you want.
Picture below shows my set up at least. Hope that helps. :)

Oh Jack if you see this may I suggest a less than output to be added to the operational devices. Not a big deal but I think it could be useful.

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Jack

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Re: Light Sensors

PostFri May 22, 2015 8:11 pm

To obtain a less than you just need to use a greater or equal than (>=) and place a not gate at the output :) Or you could swap the inputs instead that negating the output! Both would be equivalent to a less than

You don't need a secondary light sensor thoygh, you can do it with an analog source by configuring a fixed threshold to hook to the operational device!

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Re: Light Sensors

PostFri May 22, 2015 8:12 pm

:sisi:
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TwelveFoot

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Re: Light Sensors

PostFri May 22, 2015 8:44 pm

A simple setup.
Place a light sensor, then some wire, a not gate, more wire, and finish with a light bulb.
The bulb will get brighter as it gets darker near the sensor. Just make sure they're far enough apart that the sensor can't see the light bulb.
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Re: Light Sensors

PostFri May 22, 2015 10:30 pm

Mind-Blown
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Achilles

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Re: Light Sensors

PostSat May 23, 2015 11:52 am

Ive been trying to figure that out :) thx
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