Post by thread:[EE]: Multiple lcd displays on 1 parallel pors

Hi, I have a project which calls for a 4x20 lcd display on the parallel port. I only have 2 2x20 displayes. OI was wondering. Theparallel schematic has 3 enable output lines E, E1 and E2. For one 20x2 lcd one should just use the e line, but bgger lcds have more enable lines. I was wondering whether I could have 2 lcds hooked up to exactly the same pins except to different enable lines. If so, which should I use out of the 3. THanks. Arpit -- http://www.piclist.com hint: To leave the PICList spam_OUTpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu

Go to google and search 'lcdproc'. It's done and they have a linux driver. > -----Mensaje original----- > De: pic microcontroller discussion list [.....PICLISTKILLspam@spam@MITVMA.MIT.EDU] En > nombre de arpit > Enviado el: miércoles, 16 de enero de 2002 21:34 > Para: PICLISTKILLspamMITVMA.MIT.EDU > Asunto: [EE]: Multiple lcd displays on 1 parallel pors > > Hi, I have a project which calls for a 4x20 lcd display on the parallel > port. I only have 2 2x20 displayes. OI was wondering. Theparallel > schematic has 3 enable output lines E, E1 and E2. For one 20x2 lcd one > should just use the e line, but bgger lcds have more enable lines. I was > wondering whether I could have 2 lcds hooked up to exactly the same pins > except to different enable lines. If so, which should I use out of the 3. > > THanks. > > > Arpit > > -- > http://www.piclist.com hint: To leave the PICList > .....piclist-unsubscribe-requestKILLspam.....mitvma.mit.edu -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Yes you can have the data buses common but with seperate enable lines. I've done it with three 2*16 LCD panels and it works just fine. Not sure about the parallel lines as I used a PIC :) Ben {Original Message removed}