Character LCD Mod w/Backlight By RObErT_RaTh Disclaimer: I take no responsibility for any damages caused to property or injuries to yourself or others through performing this mod. You attempt it at your own risk. This guide will hopefully help you to create a functioning Character LCD readout for your computer. When we are finished it will be able to display system temps, voltages, fan speeds, winamp song info, date/time, your own text and many other things. Here are the parts you will need for performing this mod with complete functionality: -An Alphanumeric Character LCD with a HD44780 or compatible controller (Max. 4x40) ~$15-30 -Spare male DB25 parallel printer cable or 10 core cable of some kind ~$5 -25 pin D-Type Solder Male Plug $1.40 -25 pin D-Type Backshell $1.80 -10k Ohm (Linear) Potentiometer $1.75 -100 Ohm Trimpot $0.75 -Knob to suit 10k Ohm Pot (personal preference) ~$1.50 -25 Way SIL Snapoff Header Pins $0.53 -Old floppy drive cable or just the connector on the end $1.50 for connector -Molex Y-Splitter $1.50 -Some hookup wire (In the pic you can also see some SIL IC socket pins which I THOUGHT the header pins would fit into :? I didn't try it in the store and was upset when I went home and they didn't fit so that's why I resorted to butchering my floppy drive cable ) Total minimum cost: $28.23 (Much cheaper than a Matrix Oribital ) Tool and other things required for the mod: -Soldering Iron and Solder -Electrical tape -Screwdriver -Wire Cutters -Wire Strippers -Tweezers First thing you want to do is get some header pins on that LCD of yours. I wanted to use header pins and a plug so that I could easily work with the LCD and not have to drag a heavy cable around and risk the wires coming loose. Most people wire straight to the board and there’s nothing wrong with that, I just like a little flexibility. You’ll need to figure out which pins we will be using for data transmission. Here is a pinout table to help: Looking at the above table you can see that we need to wire pins 4, and 6 through 14 to the parallel port. These are the only points on the LCD module that we want to have header pins. Look on your LCD module and identify pin 1 and work your way along removing some of the header pins for where they are not required. Once you’ve done that solder the header pins onto the board. Make sure the tall part of the pin is sticking out of the rear of the board. Solder the first pin and then the last, resolder and straighten if need to then solder the rest.