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Calculator Hardware :: RE: DMX driver for 83/84

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Author: KermMartian
Posted: 31 Dec 2012 02:13:15 pm (GMT -5)

ajcord wrote:
Got it. So the transceiver would need a separate power adapter, and the transceiver's pin 5 would need connected to the ground wire of the link cable.
KermMartian wrote:
You need to use the tip and ring respectively as the input bit and output bit

The input bit and output bit are just inverses of each other then, like the 0v/+5v and +5v/0v we discussed earlier?
No, the transceiver abstracts that away for you. The input bit will be read-only, and will show you what the other end is transmitting. The output bit will be write-only, and it's where you send a bit to the opposite end. However, I'm not sure how you avoid reading what you are writing. Is there a third transmit-enable pin somewhere? If so, that could be a problem.
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