Node.js Raspberry Pi clock source

README.md

1. First, you need to install node.js and npm using the following command.

sudo apt-get install nodejs npm node-semver

1. Second, you need to install the wiring-pi package.

npm install wiring-pi

The module will be installed in your home directory, so make sure to run the scripts in there. It also depends on another package, node-gyp, which compiles the wiring-pi bindings from source, so it may require gcc and other tools.

1. Run the script using

sudo node clock.js

The sudo is necessary because wiring-pi accesses some hardware peripherals directly.

clock.js

var wpi = require('wiring-pi');

wpi.setup('wpi');

// wiring-pi has its own pin numbering scheme: http://wiringpi.com/pins/
wpi.pinMode(15, wpi.modes.OUTPUT);
setInterval(function() {
  console.log("HIGH");
  wpi.digitalWrite(15, wpi.HIGH);
  setTimeout(function() {
    console.log("LOW");
    wpi.digitalWrite(15, wpi.LOW);
  }, 1500);
}, 3000);