import { Split, Horizontal, Invert, SplitRigh, FullScreenCode} from 'mdx-deck/layouts' import { Head, Image } from 'mdx-deck/dist' import { Box, Text, Card, Flex } from 'rebass'
export { condensed as theme } from 'mdx-deck/themes'
import { library } from '@fortawesome/fontawesome-svg-core' import { FontAwesomeIcon } from '@fortawesome/react-fontawesome' import { faRaspberryPi, faNodeJs, faGithub, faSketch, faBluetoothB, faJs } from '@fortawesome/free-brands-svg-icons' import { faRunning, faToilet, faThermometerHalf, faMobileAlt, faWifi, faUndo, faCode, faBatteryThreeQuarters, faPlus, faBed, faInfinity, faMousePointer } from '@fortawesome/free-solid-svg-icons'
eng·in·eer
a person that solves problems you did not know you had
export default Horizontal
- Temperature - Infrared
- Distance - Ultrasonics
- Pressure - Switch on Seat
- Machine Vision
... Taking a step back
What about ...
What about ...
Door Position?
What about ...
Door Position?
export default Invert
But in all seriousness, the lock is a rotating disc, which was super simple to measure with a tilt sensor
Source: http://blog.vidianindhita.com/2018/02/27/all-about-tilt-switches/ Source: https://learn.adafruit.com/tilt-sensor/overview
export default Split
export default Horizontal
export default Horizontal
export default FullScreenCode
const rpio = require('rpio');
const express = require('express');
const app = express();
const STATUS_PIN = 11;
app.use(express.static('public'))
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
next();
});
app.get('/stall', (req, res) => {
const status = Boolean(rpio.read(STATUS_PIN));
console.log(`${req.connection.remoteAddress} // Status: ${status}`);
res.send({occupied: status});
});
rpio.open(STATUS_PIN, rpio.INPUT);
app.listen(3000, () => {
console.log('stall-monitor is "Watching the Stall"');
}); 
*Artist Rendering. Sadly no pictures remain of this monstrosity.
Source: http://www.se.edu/staff/cwood/2011/11/09/datacenter-remodel-complete/ ---
export default Horizontal
export default Split
ESP32 - Wifi, Bluetooth 4, Encryption, ADC/DAC, GPIO, Protocols
nRF51/52 - Bluetooth 5, NFC, Encryption, ADC/DAC, GPIO, Protocols (SPI. I2C, I2S, UART, 2 wire, more!)
nRF91 - Cellular!!
export default Split
- MDBT42Q (BLE)
- Pico (Tiny)
- Puck (BLE + Housing + Sensors)
- Pixl (BLE + Screen)
- Wifi
- IDE
export default Split
- Popular IoT transport protocol
- Bi-directional Publish-Subscribe
- Optimized for low power, small packets, reliability
- Channels for status, battery, previous state duration
export default FullScreenCode
const SENSOR = D14;
var state = false;
var time = getTime();
var newTime = 0;
var options = {
name: "Skookum Stall Monitor",
interval:1000,
manufacturer:0x0590
};
function setAdvertisingData(doorState, duration) {
options.manufacturerData = JSON.stringify({
l: doorState ? 1 : 0,
d: Math.round(duration)
});
NRF.setAdvertising({
0x180F : [Math.round((NRF.getBattery()-2.5)/0.8*100)]
}, options
);
}
// Initialization
pinMode(D14, 'input_pulldown');
NRF.setLowPowerConnection(true);
setAdvertisingData(!SENSOR.read(), 0);
// Main
setWatch(function(e) {
if(state !== e.state) {
newTime = getTime();
setAdvertisingData(!e.state, newTime - time);
time = newTime;
}
state = e.state;
}, SENSOR, { repeat: true, edge: 'both', debounce: 1000 });NRF.setLowPowerConnection()
setWatch()
NRF.getBattery()
export default FullScreenCode
const http = new XMLHttpRequest();
const url = "http://10.1.5.135:3000/stall";
function setBathroomStatus(occupied) {
document.getElementById('toilet').style.display = 'block';
document.getElementById('occupied').style.display = occupied ? 'block' : 'none';
document.getElementById('vacant').style.display = occupied ? 'none' : 'block';
};
function log(msg) {
document.getElementById('log').textContent = msg;
}
// Create a client instance
client = new Paho.MQTT.Client(
location.hostname||"10.1.5.121",
parseInt(location.port||1888),
location.pathname.substr(0,location.pathname.lastIndexOf("/")+1),
Math.random().toString(36).substring(7)
);
// set callback handlers
client.onConnectionLost = onConnectionLost;
client.onMessageArrived = onMessageArrived;
log("MQTT Connecting...");
// connect the client
client.connect({onSuccess:onConnect});
// called when the client connects
function onConnect() {
log("MQTT Connected");
client.subscribe("#"); // get everything
}
// called when the client loses its connection
function onConnectionLost(responseObject) {
if (responseObject.errorCode !== 0) {
document.getElementById('toilet').style.display = 'none';
log("MQTT connection lost:"+responseObject.errorMessage);
}
}
// called when a message arrives
function onMessageArrived(message) {
log(""+message.destinationName+" -> "+JSON.stringify(message.payloadString));
if (message.destinationName.startsWith("/ble/advertise/stall-monitor-men/l")) {
// console.log(message.destinationName, ": ", message.payloadString);
setBathroomStatus(message.payloadString === "1");
}
}export default Horizontal
export default Horizontal
