Win10, Spotify active "Specified audio output device".

Support Windows 10 ONLY.

Win7, VirtualBox - Disable Time Sync.

Eclipse, show line number.

Path: Windows --> Preferences --> General --> Editors --> Text Editors --> Show line numbers

Win7, VirtualBox - Resize hdd to bigger (20GB to 40GB).

Step-01: Extend to 40GB as example
# VBoxManager.exe modifyhd filePath:/virtual-HDD-filename.vdi --resize 40000

Windows CMD: systeminfo

CMD: systeminfo

TCL, array 陣列

Example Code
array set familyName {
    papa Agent7
    momo Agent8
    son Agent9
}



Check ARRAY exist (1: true - 0: false)
# array exists family
# 1


List ARRAY variable name
# array name family
# sonName momoName papaName


Get ARRAY variable content
# array get family
# sonName Agent9 momoName Agent8 papaName Agent7


Resurt
# puts $familyName(papa)
# AgentPAPA

# puts $familyName(momo)
# AgentMOMO


Arduino, DHT11 (Temperature, Humidity) & LCD indicator.

TCL, Thread

Example Code

Arduino, Vibration Sensor SW420

Example Code
int pin_LED = 13;
int pin_EP = 9;

void setup() {
    Serial.begin(9600);
    pinMode (pin_LED, OUTPUT);
    pinMode (pin_EP, INPUT); //set EP input for measurment
}

void loop() {
    long measurement = TP_init(); //Vibration sensor.
    delay(50); // default is 50
    Serial.print( "key U:" ); Serial.print( " [" ); Serial.print( measurement ); Serial.print( "] " );

    if (measurement > 500){
            digitalWrite(pin_LED, HIGH);
            Serial.print( "Vibration Level: Earthquake." );

    } else if (measurement > 100){
            digitalWrite(pin_LED, HIGH);
            Serial.print( "Vibration Level: Shake Tea." );
            digitalWrite(pin_LED, LOW);
    } else {
            digitalWrite(pin_LED, LOW);
            Serial.print( "Vibration Level: Very Quiet." );
    }
}

long TP_init(){
    delay(10); // default is 10
    long measurement=pulseIn (pin_EP, HIGH); //wait for the pin to get HIGH and returns measurement
    return measurement;
}


Android, ADB push & pull file.

PUSH / PC to Android
Copy file from PC to Android through ADB shell.
    Syntax | PC C:\ADB\adb push  source_PC_filePath  destination_Android_ filePath
    example: adb push w200b\02-video\color2-green.mp4 data/worktmp

PULL / Android to PC
Copy file from Android to PC through ADB shell.
    Syntax | PC C:\ADB\adb pull source_Android_filePath destination_PC_filePath
    example: adb pull data/worktmp/SoundRecord.png w200b