This is the Revision B version of the LCD32 module.

LCD32 Module (Revision B)

Table of Contents

This document is also available in PDF format.

• 1. Introduction
• 2. Programming
• 3. Hardware
  • 3.1 Circuit Schematic
  • 3.2 Printed Circuit Board
• 4. Software
• 5. Issues

Bill Benson is providing additional additional LCD32 documentation.

1. Introduction

The LCD32 module can display a total 4 lines of 16 characters each, of which only 2 lines are visible at a time. The characters are displayed using a 5×7 dot matrix. There is a mechancal switch labeled LINES on the LCD32 module that switches between displaying lines 1-2 and lines 3-4. The LCD32 module is based upon the inexpensive Lumex^® LCM-S01602DTR/M 2×16 liquid crystal display (LCD) module available from both Digikey^® and Mouser^®. The LCD32 module has a small trim potentiometer that allows you adjust the display contrast.

2. Programming

There is a separate programming table for this module.

For people that program in Easy-C, there is a separate access library.

3. Hardware

The hardware consists of a circuit schematic and a printed circuit board.

3.1 Circuit Schematic

The schematic for the LCD32 RoboBrick is shown below:

The parts list kept in a separate file -- lcd32.ptl.

3.2 Printed Circuit Board

The printed circuit board files are listed below:

lcd32_back.png

The solder side layer.

lcd32_front.png

The component side layer.

lcd32_artwork.png

The artwork layer.

lcd32.gbl

The RS-272X "Gerber" back (solder side) layer.

lcd32.gtl

The RS-272X "Gerber" top (component side) layer.

lcd32.gal

The RS-272X "Gerber" artwork layer.

lcd32.drl

The "Excellon" NC drill file.

lcd32.tol

The "Excellon" tool rack file.

4. Software

The LCD32 software is available as one of:

lcd32.ucl

The µCL source file.

lcd32.asm

The resulting human readable PIC assembly file.

lcd32.lst

The resulting human readable PIC listing file.

lcd32.hex

The resulting Intel^® Hex file.

5. Issues

The follow fabrication issues occurred:

• It would be nice to move SW1 a little.
• The right hold-down hole is not aligned properly
• The three LCD supports should be moved in a little.