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Outputs:

Its always the same, how to connect external things to the IO Port, For a smaller load the Relais stuff can be used.

For those of you who want that prebuild, you can use the Modules from Kaemo or Pollin Electronics.

For all of you using my schematics please note: I used relais with a build in diode to protect the transistor. If your relais don't have a diode add it, otherwise your transistor will blow up.



Please note: the voltage and currents you can use with this device depends onyour relais!

 Inputs:

all inputs of the PIOs work with TTL voltage. If you need higher volateges up to 24V you can use this circuit from Ullrich Vollmer. In the example there are 5 couplers because it was used with the parallel port. If you need more please add them accordingly:

 

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