Here is the deal: There are 2 LEDs(1 RED and the other Infrar Red)
share 1 light sensor; I need to have a sampling sequence of RED on and
IR off, IR on and RED off, and both OFF and then repeats.
Since they share 1 light sensor so there is only 1 analog input to my
DAQ board.
How do I set up the
Is there any difference in the sensor output depending on which LED is
on? For example, do you have x volts for the red LED, y volts for the
infared, and something else for both on? If there isn't, I don't see
how you could differentiate between one or the other being on.
There will be very small difference in the sensor output depending on
which LED is on, and when they are both off, the output will have a
distinctive smaller voltage range.
So if this is not doable in LabVIEW, I need to use an intermediate
circuit that will control the LED turning on/off sequence,
Maybe you could explain exactly what you need to measure. If you have
to verify that only one LED is on at a time, then I don't think you
can do it with only one sensor or only one that can't differentiate.
LabVIEW has nothing to do with it. If your aim is to simply turn the
LEDs on and off in a
So the sensor isn't for the detection of the LED itself but the light
that passes through some sample? If that's the case, then LabVIEW and
a DAQ board should be able to do the job. I'm not at a computer with
LabVIEW right now so I can't post an example but you would have a
while loop that would
