Teardown Conference: hacking appliances with netduino + xamarin
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The document discusses the future of connected devices, emphasizing the increasing consumer demand for sophisticated hardware and the potential of the Internet of Things (IoT) in various sectors. It highlights the importance of microcontrollers in enabling this revolution, including the development of a connected appliances platform using tools like Netduino. The text also outlines various applications and technologies, including automated grocery ordering and smart kitchen devices, while promoting related upcoming events and resources.
![Maple Web Server Host
public delegate void TurnOnHandler(int targetTemp);
public event TurnOnHandler TurnOn = delegate { };
public void postTurnOn() {
try {
int targetTemp = 0;
var prm = "targetTemp";
if (this.Body[prm] == null && this.Form[prm] == null && this.QueryString[prm] == null) {
StatusResponse(ContentTypes.Application_Text, 400, prm + " is required");
return;
}
try {
var temp = this.Body[prm] ?? this.Form[prm] ?? this.QueryString[prm];
targetTemp = int.Parse(temp.ToString());
} catch(Exception ex) {
StatusResponse(ContentTypes.Application_Text, 400, "Invalid " + prm + " value");
}
TurnOn(targetTemp);
StatusResponse(200);
} catch (Exception ex) {
StatusResponse(ContentTypes.Application_Text, 500, ex.Message);
}
}
get:/Status
post:/TurnOn
post:/TurnOff](https://image.slidesharecdn.com/teardownhackingapplianceswithnetduinoxamarin-180512182652/85/Teardown-Conference-hacking-appliances-with-netduino-xamarin-19-320.jpg)
Teardown Conference: hacking appliances with netduino + xamarin
- 1. We Power Connected Things Hardware development at the speed of software. www.wildernesslabs.co slideshare.net/bryancostanich
- 2. The Hardware Revolution, 10 years ago, the iPhone launched. Today, we have cars that drive themselves. 10 years from now, nearly every new device will be connected, and much of them will be automated. Consumers will demand sophisticated hardware. June Oven, Tovala, and other. 3 types of IoT: Consumer, Commercial, and Industrial GE predicts $60T in Industrial IoT alone in the next 15 years. a career opportunity. © 2018, Wilderness Labs, Inc.
- 3. Future Tech Connected fridge of tomorrow: - Inventory + automated grocery ordering. - Meal & diet plan, recipe assistant. - User recognition, experience tailoring. - Allergy, food expiration, etc. warnings. - Integration with oven, microwave, etc. Winning Commercial & Industrial IoT devices will be just as sophisticated. © 2018, Wilderness Labs, Inc.
- 4. Microcontrollers will make the revolution possible. Commodity chips. $2-$10 Low-energy, high-performance. General Purpose Input-Output (GPIO) Digital + Analog Built-in Protocol Support (SPI, I2C, Serial, CAN, and others) Analog-to-Digital (ADC) Converters Digital-to-Analog Converters Gateway Connectivity (BLE, WiFi, others) Real IoT is powered by microcontrollers (MCUs).
- 5. Netduino = Arduino form factor running the .Net MicroFramework. Visual Studio (Windows + Mac) Debugging, events, etc. Building a vNext connected things platform. Prototype with Netduino. Go to market with Meadow. meadow © 2018, Wilderness Labs, Inc.
- 8. household mains electricity PID controllers LCD menu UI web API mobile app Hacking Connected Appliances Start building the hardware of tomorrow, today.
- 9. Enclosure github.com/wildernesslabs/3D_Print_Designs Netduino Breadboard Relay Power Distribution LCD + Rotary Encoder
- 11. Power Control Household electricity (110V/240V) is controlled by a relay. Relays are electromechanical and isolate circuits. Controlled by a simple on/off via a digital I/O pin. Baseboard @ 3D_Print_Designs repo OutputPort relay = new OutputPort(Pins.GPIO_PIN_D2, false); relay.Write(true); var relay = new Relay(N.Pins.GPIO_PIN_D1); relay.IsOn = true; relay.Toggle() Netduino.Foundation:
- 12. TextDisplayMenu
- 13. JSON-powered Use with any LCD via Netduino.Foundation (GPIO, I2C, Serial, SPI) Navigate with IRotaryEncoder, or IButtons. Editable Items. Using TextDisplayMenu protected void InitializeMenu() { // initialize menu _menu = new Menu(_display, _encoder, Resources.GetBytes(Resources.BinaryResources.menu), true); _menu.ValueChanged += HandleMenuValueChange; _menu.Selected += HandleMenuSelected; _menu.Exited += (s, e) => { this._inMenu = false; this.DisplayInfoScreen(); }; _menu.UpdateItemValue("power", "Turn on"); } protected void HandleMenuSelected(object sender, MenuSelectedEventArgs e) { switch (e.Command) { case "power": Debug.Print("menu power"); TogglePower(); break; case "Exit": this.DisplayInfoScreen(); break; } } protected void HandleMenuValueChange(object sender, ValueChangedEventArgs e) { switch (e.ItemID) { case "temperature": _targetTemp = (float)(double)e.Value; //smh _dehydrator.TargetTemperature = _targetTemp; break; case "timer": _runTime = (TimeSpan)e.Value; break; } }
- 16. PID in Action - Controller ctor public DehydratorController (AnalogTemperature tempSensor, SoftPwm heater, Relay fan, ITextDisplay display) { _tempSensor = tempSensor; _heaterRelayPwm = heater; _fanRelay = fan; _display = display; _pidController = new StandardPidController(); _pidController.ProportionalComponent = .5f; // proportional _pidController.IntegralComponent = .55f; // integral time minutes _pidController.DerivativeComponent = 0f; // derivative time in minutes _pidController.OutputMin = 0.0f; // 0% power minimum _pidController.OutputMax = 1.0f; // 100% power max _pidController.OutputTuningInformation = false; }
- 17. PID in Action - Temperature Thread protected void StartRegulatingTemperatureThread() { _tempControlThread = new Thread(() => { while (this._running) { _pidController.ActualInput = _tempSensor.Temperature; _pidController.TargetInput = this.TargetTemperature; var powerLevel = _pidController.CalculateControlOutput(); this._heaterRelayPwm.DutyCycle = powerLevel; // sleep for a while. Thread.Sleep(_powerUpdateInterval); } }); _tempControlThread.Start(); }
- 18. Web Server Purpose-built for Netduino. Modern, RESTful Web API/ Built-in JSON Support.
- 19. Maple Web Server Host public delegate void TurnOnHandler(int targetTemp); public event TurnOnHandler TurnOn = delegate { }; public void postTurnOn() { try { int targetTemp = 0; var prm = "targetTemp"; if (this.Body[prm] == null && this.Form[prm] == null && this.QueryString[prm] == null) { StatusResponse(ContentTypes.Application_Text, 400, prm + " is required"); return; } try { var temp = this.Body[prm] ?? this.Form[prm] ?? this.QueryString[prm]; targetTemp = int.Parse(temp.ToString()); } catch(Exception ex) { StatusResponse(ContentTypes.Application_Text, 400, "Invalid " + prm + " value"); } TurnOn(targetTemp); StatusResponse(200); } catch (Exception ex) { StatusResponse(ContentTypes.Application_Text, 500, ex.Message); } } get:/Status post:/TurnOn post:/TurnOff
- 20. Dehydrator App Solution Architecture Main() launches App. App instantiates peripherals Features managed by controllers.
- 21. Xamarin Mobile App Xamarin.Forms + HttpClient async private Task<bool> PowerCommand(string command) { HttpClient client = new HttpClient(); client.BaseAddress = new Uri("http://" + _hostAddress + "/" + _apiBase); var response = await client.PostAsync(command, null); if (response.IsSuccessStatusCode) { if (command == "turnon") { App.ApplianceStatus = ApplianceStatus.On; } else { App.ApplianceStatus = ApplianceStatus.Off; } } return response.IsSuccessStatusCode; }
- 22. What future tech will you build?
- 23. Bay Area MakerFaire next week! May 18th-20th Hardware Hackers Portland June (date TBD) PADNUG July 3rd Hardware Hackers July Roadshow (BC, Seattle, Portland, SF, LA, Phoenix). Upcoming Events