Quick Optical Sensor Question

[crazycliffy]

thanks for the quick response.
I understand, it is a "switch" type sensor.


Since from the schematics from first says
connect black wire to Switch3 and white wire
to Switch4. This means 12 V goes to Switch3,
and then 0 Volts goes to Switch4 (On State). The 12V,
goes directly to the digital input..

Does this short circuit or cause problems to the
robot control (digital input)?

I read from the Innovation's RC Reference Guide, says...

"Digital Inputs are "looking" only for ground signals
to become "active".. Do not connect positive voltage
to any switch or digital input pin, only ground"

Thanks for your advice!!