g13lcd.sh - a simple app to load text or images on a g13

This script gives you a simple one-liner way to display specific text or images on the g13 LCD screen.
This relies on:
    ecraven's g13 https://github.com/ecraven/g13
    netpbm http://netpbm.sourceforge.net/
    imagemagick http://www.imagemagick.org/


netpbm and imagemagick are both in Portage for Gentoo.

• emerge -av netpbm imagemagick
• download and `make` g13 : `git clone https://github.com/ecraven/g13`
• copy pbm2lpbm to a bin directory like `/usr/local/bin` 

Next download and copy this `g13lcd.sh` script to a bin directory. You can also find it: http://pastebin.com/NA9xzpaH


#!/bin/bash # a simple image file builder to display on the g13 lcd screen. requires netpbm, imagemagik, ecraven's g13 tmpfile=/tmp/g13lcd.tmp rm -rf ${tmpfile}.* function textToLCD { pbmtext ${mytext} >${tmpfile}.pbm convert ${tmpfile}.pbm -resize 160x43! ${tmpfile}.resized.pbm cat ${tmpfile}.resized.pbm | pbm2lpbm > ${tmpfile}.lpbm cat ${tmpfile}.lpbm >/tmp/g13-0 } function imageToLCD { convert ${myimage} -resize 160x43! ${tmpfile}.resized.pbm 2>&1 |tee >/dev/null cat ${tmpfile}.resized.pbm | pbm2lpbm > ${tmpfile}.lpbm cat ${tmpfile}.lpbm >/tmp/g13-0 } case "$1" in --text2lcd) mytext=`echo "$*" |sed "s/--text2lcd //"` textToLCD ;; --image2lcd) myimage=$2 imageToLCD ;; esac


You will need to start the g13 daemon before being able to output to the LCD. Either use the `g13` command or see previous entry about the `g13.sh` script I wrote.

Afterwards you can execute this script by either:
`g13lcd.sh --text2lcd TEXT GOES HERE` or
`g13lcd.sh --image2lcd /somedirectory/someimage.jpg`

It should be able to convert most image types to display on the screen. But it's (as of yet) a very basic script, it ignores all aspect ratio, doesn't do specific padding, etc. You'll want to make sure the image you're converting is about the  same size pretty much.