I am adding a serial port (MAX232) to my device to connect to future addons
that I will provide.  I would like to have GND, +5V, TX, and RX on an
external connector so that I can build a device that does not need its own
PS.

Can anyone suggest a good, compact 4 conductor connector to use?  I am using
a stereo 3.5mm jack in the prototype, but it does not have +5V since its
only 3 conductor.  I do not have room for a modular (telephone) jack.  I
will probably use a 4 conductor 3.5mm jack from CUI Inc., but the problem
with that is that the only source for plugs that I can find is Digikey at
around $10 a piece!  Also I am a little concerned that if someone plugs a
stereo plug in by mistake, it will short the TX, line to GND or +5V.

Is there an alternative connector to consider?  Does anyone know of a lower
price source for 4 conductor 3.5mm plugs?

Thanks,

--BobG

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body