PC Parallel Port, BasicX, BASIC Stamp, 68HC11, PIC, PICAXE, Data
Acquisition and Control, Serial Control and Measurement. Many Microchip
PIC Types , Use of a PC Printer Port for Control and Data Acquisition,
68HC11 Assembly Language ProgrammingParallel Port Interfacing with 2, 3
and 4 Wire Serial Devices.
is a combination of LCD PIC, an assembled printed circuit board from
ModernDevice.com, a 20X4 LCD with Blue / White backlight and interfacing
design provides an interface between a 9600 baud (or similar) serial
line from a Microchip PIC, Arduino, Parallax Basic Stamp, NetMedia BX24,
PICAXE and similar and a character LCD having an HD44780 interface.
serial interface is TTL. That is, the idle state is a TTL logic one, or
near +5 VDC. This is often termed non-inverting or true. This provides
direct compatibility with the UART associated with a PIC, SerOut on a
Basic Stamp and Com3 on a BX24. When interfacing with a PC or similar
where the logic is inverted, an inverter is required. This might be as
simple as a single 2N3904 NPN transistor.
(this is a very useful computer interfacing resource for instrumentation – delabs)