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???
12/02/11 17:50
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#184999 - Parallel port
Trying to construct a pc controlled home automation system. Is it posible to power the opto-coupler (4n35) from the data pins n what value of limiting resistor can be used to limit the current being drawn from the port? Also for connection to the opto coupler a output, is 4.7k a safe value?

List of 4 messages in thread
TopicAuthorDate
Parallel port      Edgar Kaveli      12/02/11 17:50      
   Can you show a schematic?      Michael Karas      12/02/11 18:48      
   Why the parallel port?        Andy Neil      12/03/11 05:12      
      Parallel IO from USB      Andy Neil      12/03/11 08:00      

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