NODE BOTS 

NOT JUST CONTROLLED BY JS ACTUALLY RUNNING NODE! 

RASPBERRY PI $35 Credit-card sized Runs Debian Has external programmable pins 

RASPBERRY PI 

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RASPBERRY PI 

NODE ON PI 2+ hours for compilation… But it works like a dream! 

GPIO 

THOSE EXTERNAL PINS ARE ENTICING! github.com/rakeshpai/pi-gpio v a r g p i o = r e q u i r e ( " p i - g p i o " ) ; g p i o . o p e n ( 1 6 , " o u t p u t " , f u n c t i o n ( e r r ) { g p i o . w r i t e ( 1 6 , 1 , f u n c t i o n ( ) { g p i o . c l o s e ( 1 6 ) ; } ) ; } ) ; 

WELL, THAT WAS FUN How about running a motor off that? 

L293D CC image by oomlout 

PI-MOTOR github.com/rakeshpai/pi-motor v a r M o t o r = r e q u i r e ( " p i - m o t o r " ) ; v a r m = n e w M o t o r ( 7 , 1 1 ) ; m . c l o c k w i s e ( f u n c t i o n ( e r r ) { m . c o u n t e r c l o c k w i s e ( f u n c t i o n ( e r r ) { m . s t o p ( ) ; } ) ; } ) ; 

SWEET! Let's add some more node-sauce How about running a web-server? And socket.io? 

DEMO 

BUT THE PI HAS LIMITATIONS Add an Arduino to the mix! 

TALKING TO THE ARDUINO Small firmware on the Arduino in C Talk to it over USB using Huge thanks to Chris Williams! github.com/voodootikigod/node-serialport 

NOW, LET'S ADD SOME MORE STUFF Ultra-sonic sensors Servo-motors …and SVG! And expose this to Node! 

DEMO 

THANKS! github.com/rakeshpai @rakesh314