Ebay Topway 16x2 serial lcd problem.
http://cgi.ebay.com/LCD-16x2-w-serial-1-pin-controller-chips-BASIC-STAMP_W0QQitemZ290005727312QQihZ019QQcategoryZ36332QQssPageNameZWD1VQQrdZ1QQcmdZViewItem
First off stick that link into your browser to see what Im talking about. Second. I bought this thing off ebay like a year ago and built it into a radio shack soldering pcb. I attached 5vdc to it and got nothing I adjusted the contrast control back and forth only to see black lines at times. I put the lcd away and left it in the closet for a year well protected. Recently I thought I would pull it out of the closet to check it out once more. So thinking that I might have built the circuit wrong a year ago, I desoldered everything and rebuilt the circuit using a new pcb. Still am getting the same thing. the kit uses an atmel I think as an interpreter. Please Parallax help me, I am using a bs2sx a super carrier board and Basic Stamp IISX Software version 1.1 copyright 1998 through windows 98 in msdos mode. Also I did hook the lcd up to my power supply and hooked up the serial wire to pin 10 and wrote serout 10, 16780, [noparse][[/noparse]"YO", cr] still nothing. The lcd has 16 pins on it. It is a Topway LMB162abc. I think the interpreter chip might be bad . Maybe I could just hook the lcd up in a parallel configuration? Anyhow, sleepless in Phoenix- Andrew Smiley
First off stick that link into your browser to see what Im talking about. Second. I bought this thing off ebay like a year ago and built it into a radio shack soldering pcb. I attached 5vdc to it and got nothing I adjusted the contrast control back and forth only to see black lines at times. I put the lcd away and left it in the closet for a year well protected. Recently I thought I would pull it out of the closet to check it out once more. So thinking that I might have built the circuit wrong a year ago, I desoldered everything and rebuilt the circuit using a new pcb. Still am getting the same thing. the kit uses an atmel I think as an interpreter. Please Parallax help me, I am using a bs2sx a super carrier board and Basic Stamp IISX Software version 1.1 copyright 1998 through windows 98 in msdos mode. Also I did hook the lcd up to my power supply and hooked up the serial wire to pin 10 and wrote serout 10, 16780, [noparse][[/noparse]"YO", cr] still nothing. The lcd has 16 pins on it. It is a Topway LMB162abc. I think the interpreter chip might be bad . Maybe I could just hook the lcd up in a parallel configuration? Anyhow, sleepless in Phoenix- Andrew Smiley
![cry.gif](http://forums.parallax.com/images/smilies/cry.gif)
Comments
Here is the data sheet for your LCD (attached). It may help you in troubleshooting the problem.
One thing is clear from the data sheet, and that is that you must wait 50·mS before you use it to allow it to go through its initialization routine.
Regards,
Bruce Bates
http://forums.parallax.com/showthread.php?p=603374
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Chris Savage
Parallax Tech Support
csavage@parallax.com
·· The link I posted has some code that should work for you.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Chris Savage
Parallax Tech Support
csavage@parallax.com