CD Collection Ripping

ripit -Z 2 -d /dev/sr0 --quitnodb 1
ripit -Z 2 -d /dev/sr1 --quitnodb 1

in config:
output=/data/Music
coder=2 # Flac
loop=1
eject=1

Note" "-Z 2" means try paranoia twice, but give up.

http://www.suwald.com/ripit/news.php

Fixing Low Volume: Ubuntu 9.10 ASRock 4CoreDual-SATA2

/etc/modprobe.d/alsa-base.conf

options snd-hda-intel model=3stack

Reference: http://ubuntuforums.org/showthread.php?t=373287

renumber filenames

for i in {1..10} ; do mv B$i.png B$[$i-1].png ; done

Turn Caps Lock into Control Key

xmodmap -e 'remove Lock = Caps_Lock'
xmodmap -e 'keysym Caps_Lock = Control_L'
xmodmap -e 'add Control = Control_L'

Bar Graph Toggle From Keyboard

/*

Bar Graph Toggle From Keyboard

*/

int c;

void setup() {

Serial.begin(9600);

pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);

digitalWrite( 3, HIGH);
digitalWrite( 4, HIGH);
digitalWrite( 5, HIGH);
digitalWrite( 6, HIGH);
digitalWrite( 7, HIGH);
digitalWrite( 8, HIGH);
digitalWrite( 9, HIGH);
digitalWrite(10, HIGH);

}


void loop() {


if (Serial.available()) {

c = Serial.read();

if (c >= '1' && c <= '8') {

c = c & 0x0f; // Convert ascii to int
c += 2; // pins 3-10 == keys 1-8

digitalWrite(c, !digitalRead(c)); // Toggle pin
}
}
}

setterm -blank

"setterm -blank nn will tell the console driver to blank the screen after nn minutes of inactivity. (With nn = 0, screensaving is turned off. In some old kernels this first took effect after the next keyboard interrupt.) -- Linux Keyboard and Console HOWTO

Arduino as a clock source

Arduino as a 1MHz clock...

/* 1MHz Clock */

int ledPin = 7;

void setup() {
pinMode(ledPin, OUTPUT);
noInterrupts();
}

void loop() {
PORTD ^= 10000000;
asm("NOP");
asm("NOP");
asm("NOP");
}

Fastest Arduino (16MHz) output: 1.6MHz