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monsters, mailboxes and other nonsense

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a new home

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10 meters

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the house 
 of the future

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433MHz

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IoT is actually incredibly boring

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raspberry pi with domoticz

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chicken thermostat

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brrrr!

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kippenwaterdrinkbak (chicken water trough)

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kippenwaterdrinkbakverwarmingselement (chicken water trough heater)

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kippenwaterdrinkbakverwarmingselementschakelaar (chicken water trough heater switch)

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kippenwaterdrinkbakverwarmingselementschakelaarthermometer (chicken water trough heater switch thermometer)

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rfxcom

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every 30 seconds a “ping” with the temperature

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temperature below zero → turn on the heater

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turn remote switch on

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“It’s above 
 freezing,
 water trough 
 heating 
 turned off”

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The “S” in IoT stands for security

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the fiery
 witch kettle

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Do-it-yourself IoT

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brains (or microcontrollers)

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Arduino Uno
 ATmega238
 16 Mhz
 2 KB RAM
 32 KB Flash

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ESP-01
 ESP 8266 
 80 Mhz
 128 KB RAM
 512 KB Flash


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NodeMCU
 ESP 8266
 80 Mhz
 128 KB RAM
 4 MB Flash


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NodeMCU

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Neopixel
 24 serial 
 connected 
 WS2812 RGB 
 LEDs

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#include #define PIN D1 #define PIXELS 24 Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXELS, PIN, NEO_GRB + NEO_KHZ800); void setup(void) { strip.begin(); strip.setBrightness(255); strip.setPixelColor(0, strip.Color(0, 0, 255)); strip.show(); } void loop(void) { }

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int i = 0; void setup(void) { strip.begin(); strip.setBrightness(255); } void loop(void) { i = (i + 1) % PIXELS; strip.setPixelColor(i % PIXELS, strip.Color(0, 0, 0)); strip.setPixelColor((i + 1) % PIXELS, strip.Color(0, 0, 63)); strip.setPixelColor((i + 2) % PIXELS, strip.Color(0, 0, 127)); strip.setPixelColor((i + 3) % PIXELS, strip.Color(0, 0, 195)); strip.setPixelColor((i + 4) % PIXELS, strip.Color(0, 0, 255)); strip.show(); delay(8); }

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?! JavaScript? And C?
 Kinda the same. Just about.
 Not quite. No.

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IKEA SOMMAR 2017 lantern

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WiFi must be very complicated…

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const char* ssid = "........"; const char* password = "........"; ESP8266WebServer server(80); void setup(void) { WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) delay(500); server.on("/on", [](){ server.send(200, "text/plain", "on"); }); server.on("/off", [](){ server.send(200, "text/plain", "off"); }); server.begin(); } void loop(void) { server.handleClient(); }

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http:/ /sparkle.local/api?command=power&status
 command=power&on
 command=power&off command=brightness&status
 command=brightness&set=50 command=color&status
 command=color&set=f34d0d

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homebridge homebridge-better-http-rgb

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siri

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pixel monsters

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Prolight 12W ceiling lamp

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Neopixel
 64 serial 
 connected 
 WS2812 RGB 
 LEDs

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SD card Storage of monsters Buzzer Beeps for notifications Lightsensitive resistor Night-mode

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are you kidding? yeah that's fine can I take it with me on a plane?

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progressive
 web app

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http:/ /pixel.local

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http:/ /pixel.local

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editor.addEventListener('touchstart', handleTouch); editor.addEventListener('touchmove', handleTouch); function handleTouch(e) { for (var i = 0; i < e.changedTouches.length; i++) { let elem = document.elementFromPoint( e.changedTouches[i].pageX, e.changedTouches[i].pageY ); if (elem.tagName && elem.tagName == 'TD' && 
 editor.contains(elem)) 
 { drawPixel(elem); } } e.preventDefault(); }

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editor.addEventListener('touchstart', handleTouch); editor.addEventListener('touchmove', handleTouch); function handleTouch(e) { for (var i = 0; i < e.changedTouches.length; i++) { let elem = document.elementFromPoint( e.changedTouches[i].pageX, e.changedTouches[i].pageY ); if (elem.tagName && elem.tagName == 'TD' && 
 editor.contains(elem)) 
 { drawPixel(elem); } } e.preventDefault(); }

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let socket = new WebSocket( "ws://" + window.location.host + "/ws" ); function drawPixel(elem) { if (elem.dataset.color != currentColor) { elem.dataset.color = currentColor; elem.style.backgroundColor = '#' + currentColor; socket.send(JSON.stringify({ command: "draw", x: elem.dataset.x, y: elem.dataset.y, color: currentColor })); } }

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let socket = new WebSocket( "ws://" + window.location.host + "/ws" ); function drawPixel(elem) { if (elem.dataset.color != currentColor) { elem.dataset.color = currentColor; elem.style.backgroundColor = '#' + currentColor; socket.send(JSON.stringify({ command: "draw", x: elem.dataset.x, y: elem.dataset.y, color: currentColor })); } }

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{
 "command": "draw",
 "x": 5,
 "y": 5,
 "color": "ffffff"
 }

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{
 "command": "draw",
 "x": 5,
 "y": 5,
 "color": "ffffff"
 }

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socket.onmessage = function(msg) { let data = JSON.parse(msg.data); if (data.command == "draw") { let elem = document.querySelector( 'td[data-x=' + data.x + ']' + 
 '[data-y=' + data.y + ']' ); elem.dataset.color = data.color; elem.style.backgroundColor = '#' + data.color }; } }

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socket.onmessage = function(msg) { let data = JSON.parse(msg.data); if (data.command == "draw") { let elem = document.querySelector( 'td[data-x=' + data.x + ']' + 
 '[data-y=' + data.y + ']' ); elem.dataset.color = data.color; elem.style.backgroundColor = '#' + data.color }; } }

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demo

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the mystery
 of the 
 haunted mailbox

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mail box

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magnetic contact

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when the mailbox opens it sends a signal

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http:/ /pixel.local/api?command=notify&icon=mailbox

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solution #1 combine the 
 magnetic contact 
 with a motion sensor?

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solution #2 turn off the
 magnetic contact with
 strong westerly winds?

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solution #3

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thanks! questions? 
 
 @html5test