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Originally Posted by TheCow
i have a question:
there are some digital sensors we got with the KOP:
the allen bradley photodetectors
the psi sensor that's tripped when pressure gets to 115 psi (correct me if im wrong)
and the limit switch.
the board has digital i\o connections - SIG 5V+ and GND.
my question is, take the limit switch for instance:
how do i connect it to with out short circuiting the board?
thanks in advance.
edit: i understand connecting a sensor to the boards 5v power, and the third leg to the SIG like with the GTS, but what do i do when i dont have a third SIG connection?
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What you will want to do in the case of a limit switch or custom switch etc. is ground the signal wire. There is plenty of documentation on the RC
here. Simple switches like limit switches don't usually need a power source like that +5V.
I haven't read anything about those Bradley Photo sensors, but my guess is they do need a power source. Grounding the signal wire works in the case of the pressure switch if it hasn't changed much since years past. I just hacked a pwm cable and soldered the white and black to the leads.