Thread: Sending data back to the OI
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Unread 23-01-2006, 17:39
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Re: Sending data back to the OI
Hi,
We connected an opto-isolator chip to the OI port 3. We connected pin 15 to the LED anode on the opto...and pin 12 to LED cathode. The OI provides current limiting. We connected the transistor to +12V (provided from outside the OI...another battery). Connected the opto transistor emitter to a 4.7K resistor to 0V. We tapped the emitter to drive a MOSFET. Used external 12V on one end of MOSFET...and a 12V lamp on the other. Voila!!

It worked well.

Regarding rules, are we allowed to bring a battery to the operator station to provide power for external circuits??

Regards,
ChuckB
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