Node.js port of Gordon Henderson's (Drogon) Tux Crossing tutorial for the Raspberry Pi.
It uses onoff to write & read to/from the GPIO pins.
To run it you need to export the pins as superuser:
sudo node export-gpio.js
Then start with:
node node-tuxx.js
The program uses the Rev. 2 GPIO numbering scheme of the RPi, so make sure the numbers are correct by editing gpio-pins.js.
Once you're done and you wish to unexport the gpio pins in use (see onoff for details):
sudo node unexport-gpio.js
Many thanks to Drogon for the excellent tutorial & to fivdi for onoff.