Post by thread:[PICLIST] [PIC] - Alternatives to MAX232 or equiv

Does anyone know how to use transistors or other device to get rs232 levels. I have 12 volts on the board. I am at the end of the project and don't want to order just one part from digikey. My only other alternative is Radio Shack and haven't checked with them yet. I haven't found an example of using a parallel port with bit bang method, but I may just try that. The communication wires need to go about 100' if possible. Speed is not critical. Thanks -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

part 1 1016 bytes content-type:text/plain; (decoded quoted-printable) Rex, I use this configuration, and works fine for my projects. AND IT�S CHEPAER !! Gabriel.- -----Mensaje original----- De: pic microcontroller discussion list [spam_OUTPICLISTTakeThisOuTMITVMA.MIT.EDU]En nombre de Rex Byrns Enviado el: Jueves, 06 de Junio de 2002 13:36 Para: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU Asunto: [PIC] - Alternatives to MAX232 or equiv Does anyone know how to use transistors or other device to get rs232 levels. I have 12 volts on the board. I am at the end of the project and don't want to order just one part from digikey. My only other alternative is Radio Shack and haven't checked with them yet. I haven't found an example of using a parallel port with bit bang method, but I may just try that. The communication wires need to go about 100' if possible. Speed is not critical. Thanks -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads part 2 7607 bytes content-type:application/pdf; (decode) part 3 154 bytes -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Rex, actually, It means that it uses 0 to 5V instead of -9 and 9V -----Original Message----- From: pic microcontroller discussion list [PICLISTKILLspamMITVMA.MIT.EDU] On Behalf Of Rex Byrns Sent: Thursday, June 06, 2002 2:46 PM To: .....PICLISTKILLspam.....MITVMA.MIT.EDU Subject: Re: [PIC] - Alternatives to MAX232 or equiv Excellent! My Espanol is a little rusty.(and it was little before it rusted) Does the paragraph on the right say that one could use +/- 9v but 5v usually works fine? {Quote hidden}> -----Original Message----- > From: pic microcontroller discussion list > [EraseMEPICLISTspam_OUTTakeThisOuTMITVMA.MIT.EDU]On Behalf Of Gabriel Caffese > Sent: Thursday, June 06, 2002 12:06 PM > To: PICLISTspam_OUTMITVMA.MIT.EDU > Subject: Re: [PIC] - Alternatives to MAX232 or equiv > > > Rex, > > I use this configuration, and works fine for my projects. > AND IT´S CHEPAER !! > > Gabriel.- > > > -----Mensaje original----- > De: pic microcontroller discussion list > [@spam@PICLISTKILLspamMITVMA.MIT.EDU]En nombre de Rex Byrns Enviado el: > Jueves, 06 de Junio de 2002 13:36 > Para: KILLspamPICLISTKILLspamMITVMA.MIT.EDU > Asunto: [PIC] - Alternatives to MAX232 or equiv > > > Does anyone know how to use transistors or other device to get rs232 > levels. I have 12 volts on the board. > > I am at the end of the project and don't want to order just one part > from digikey. > > My only other alternative is Radio Shack and haven't checked with them > yet. > > I haven't found an example of using a parallel port with bit bang > method, but I may just try that. > > The communication wires need to go about 100' if possible. Speed is > not critical. > > > Thanks > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads