gnupic: Re: [gnupic] Connecting an LCD Display to RS232 Interface
Subject:
Re: [gnupic] Connecting an LCD Display to RS232 Interface
From:
Marco Pantaleoni ####@####.####
Date:
7 Apr 2006 09:28:08 +0100
Message-Id: <44361CED.8070800@elasticworld.org>
Greg Hill wrote:
> On Thu, 6 Apr 2006, Deadly Earnest wrote:
>
>> The place where I work was throwing out some old stuff and I grabbed
>> an LCD Display which is connected via a ribbon cable to a smaller PCB.
>> Now the smaller PCB has a surface mount PIC 16C62A on it and three
>> wires coming off it. I'm assuming that the three wires are a serial
>> interface to the LCD, and the PIC does the work of converting to
>> parallel for the ribbon cable. To test this theory out I was thinking
>> of connecting up the three wires to the serial port of a PC and
>> connecting minicom to it and seeing if I can get anything out of it.
>
>
> an excellent way to collect parts. :-)
>
> It's likely a 5-volt port; connecting it to the PC serial port is likely
> to damage it because the PC's port "should" (or at least could) be
> putting out as much as +/- 15 volts. A level converter chip is needed.
> A popular choice is the old Maxim max232 series, but TI and Linear and
> probably other companies also make similar-functioning parts.
It could also be a serial interface to another micro, and in that case
it could be SPI.
Cheers,
Marco
--
Marco Pantaleoni
elastiC language developer
http://www.elasticworld.org
