Thanks - I'll give it a try. If you can recommend any particular
transistors - that will be helpful, since I'm without catalogs at the
moment. Also, you marked the drawing with 9v supply - but I assume you
realise it's 5 volts after going through a regulator.

Thanks again.

>I have humble answer to your problem, but I am afraid it contains two
>transistors and one resistor for each detector.
>
>I'm tryly sorry for the attachment, I know many of the PICsters don't aprove
>of it, but sending the picture of the circuit is the only way I see to give
>away this information.
>
>Hope it is of any help, and PLEASE give me feedback if I have completely
>screwed this one up, misunderstood something and so. :-) Please be
>indulgent, I am only a student yet... :-))
>
>Attachment Converted: "c:\eudora\attach\touch.jpg"
>