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Originally Posted by Tem1514 Mentor
When the photoswitch is wired accourding to schematics that come with it the DO and LO signal lines will give out either a 0volt or 12volt signal. This was CONFIRMED last night during a bench test.
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What are the "schematics that come with it"?
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Bench test hookup as per instructions;
Brown wire to + 12 volts (VCC) from the power distrabution board.
Blue wire to 0 volts (Ground) from PD board.
Two 10K (10,000) ohm resistors (load), have one end connected to VCC.
The other end of one resistor goes to the White wire, call this TP1 and then the last free end of the other resistor goes to the Black wire, call this TP2
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Nobody gave any instructions to put resistors to +12 on the outputs. You're not reading what we're saying:
just connect the outputs to the Digital Sidecar.
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So wiring the photowitch as per the instructions WILL give 0 to 12 volt signals which will kill a digital side car.
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Why are you so sure that a 12 volt signal will do fatal damage? Have you looked at the Digital Sidecar design?
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With that said IT SHOULD be possible to referance the LOAD resistors to +5 volts via the digital side car GPI/O pins. This is for a later test, unless someone else would like to try it.
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Why are you using "LOAD resistors"? They're not necessary. The Digital Sidecar inputs provide the necessary pullup to 5 volts.