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Things

github.com / BrestJS / 2018-iot github.com / shimaore

introduction

Node.js Raspberry Pi embedded

Raspberry Pi 3 HDMI, USB wifi, bluetooth

Alpine Linux

alpinelinux.org/downloads/

alpine-rpi-3.7.0-armhf.tar.gz

echo 'enable_uart=1' > usercfg.txt

setup-alpine -e
lbu commit     # local backup
lbu commit -d  # purge overlays
reboot

apk update
apk upgrade
apk add nodejs git

notes-alpine.md

Arduino

arduino.cc

File
 Examples
  Firmata
   StandardFirmata

Tools
 Board
Sketch
 Upload

npm install firmata

var Board = require('firmata')
var board = new Board('/dev/ttyUSB0')

var Board = require('firmata')
var board = new Board('COM1')

board.on('error', (error) => … )

const LED = 13
board.on('ready', () => {
  board.digitalWrite(LED,board.HIGH)
})

const BUTTON = 2
/*** Initialize ***/
board.pinMode( BUTTON,
  board.MODES.PULLUP | board.MODES.INPUT )
/*** Handle ***/
board.digitalRead(BUTTON, (value) => {
  board.digitalWrite(LED,value)
})

/*** Initialize ***/
board.pinMode( BUTTON,
  board.MODES.PULLUP | board.MODES.INPUT )
board.reportDigitalPin(BUTTON,1)
/*** Stream ***/
var most = require('most')
var stream = most
  .fromEvent('digital-read',board)

var counter = 0
stream
.filter( ({pin}) => pin === 2 )
.filter( ({value}) => value === board.HIGH )
.forEach( () => counter ++ )

var counter = 0
stream
.filter( ({pin}) => pin === 2 )
.filter( ({value}) => value === board.HIGH )
.debounce(250)
.tap( () => counter ++ )

❦ Merci! ❧

github.com / BrestJS / 2018-iot github.com / shimaore Credits: Joanna Kosinska, Todd Quackenbush, Philip Swinburn, Alejandro Alvarez, Scott Webb, Kristopher Roller, on Unsplash