Mark Hanchey Sent: 2007 Jul 02, Mon 15:29
> 
> Some good info on parallel port driving relays :
> http://www.epanorama.net/circuits/parallel_output.html#relaycontrol

One of the first places I looked, but they just have the standard stuff...

> 
> I would probably use a optoisolator to drive the relay.
> Get isolation and no problems driving a led from any parallel port.

This is probably what I should do on the next version rather than messing
about with the TO92's. The little DIP is quite a lot larger, but I might be
able to fit it in...

---
James.
 

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