Maybe I'm being a little dumb here, but surely that assumes I can drive the iPaq side pins anyway I like and I'm not constrained with the iPaq's serial port? -marc On 2/7/03 17:08, "Mauricio Jancic" wrote: > Cheapest than using a SN75176 or MAX485? Isn't that cheap enough? > Perhaps, you may add some transistors, but that=92s all... >=20 > Mauricio Jancic > Janso Desarrollos > (54) 11 4542 3519 > Republica Argentina > Microchip Consultant Program Member >=20 >=20 > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Marc Nicholas > Sent: Mi=E9rcoles, 02 de Julio de 2003 17:53 > To: PICLIST@MITVMA.MIT.EDU > Subject: [EE]: Inexpensive RS232<-->RS485 >=20 >=20 > Someone's asked me to look at a design for a *cheap* RS232 to RS485 > converter. The device needs to talk to a Compaq iPaq on one side (so I'm > presuming it's probably not even real RS232) and then interface for > short periods of time with an RS485 flow meter. >=20 > Any bright ideas? I'm tempted to maybe try and do this completely with a > PIC... >=20 > -marc >=20 > P.S: I realize there are lots of RS232<-->RS485 converters on the > market, but this design needs to be cheap, simple, small and self > powered... >=20 >=20 > -------------------------------------------------- > Marc Nicholas Geekythings Inc. C/416.543.4896 > UNIX, Database, Security and Networking Consulting >=20 > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics >=20 > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics >=20 >=20 =20 -------------------------------------------------- Marc Nicholas Geekythings Inc. C/416.543.4896 UNIX, Database, Security and Networking Consulting -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics