Hardware hackers - hacking appliances with netduino + xamarin
1 like395 views
The document discusses the rapid development of connected hardware, predicting that in the next decade nearly every device will be automated and connected, driven by consumer demand for sophisticated technology. It highlights the importance of microcontrollers in powering the IoT revolution, detailing their features and providing examples of projects like a smart dehydrator that utilizes web APIs and process controllers. Additionally, it emphasizes opportunities in the commercial and industrial IoT sectors, along with information about upcoming events and contests related to hardware development.
![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/hardwarehackershackingapplianceswithnetduinoxamarin-180620005549/85/Hardware-hackers-hacking-appliances-with-netduino-xamarin-23-320.jpg)
Hardware hackers - hacking appliances with netduino + xamarin
- 2. We Power Connected Things Hardware development at the speed of software. www.wildernesslabs.co Bryan Costanich @bryancostanich [email protected] slideshare.net/bryancostanich
- 3. The Hardware Revolution, 10 years ago, the iPhone launched the mobile revolution. It spawned a new class of low-energy, high-power hardware components. 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. 15 31 75 2012 2014 2016 2018 2020 Number of Connected Devices (in Billions) 2024 2026 2028 0 20 40 60 80 2022
- 4. 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.
- 5. 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).
- 6. Netduino = Arduino form factor running the .Net MicroFramework. STM32f4 Microcontroller 164K RAM, 1.4MB Flash Visual Studio (Windows + Mac) Debugging, events, etc. No generics. Excellent prototyping/dev board. Lots of commercial NetMF projects; it’s even in space with NASAJPL! Can embed for <$15. © 2018, Wilderness Labs, Inc.
- 9. Controlling household mains electricity with a relay. Regulating temperature with Proportional, Integral, Derivative (PID) controllers. Rotary encoder powered LCD menu UI. Exposing control via a web API. Connecting to that Web API from a Xamarin mobile app. Hacking Connected Appliances Start building the hardware of tomorrow, today.
- 10. System
- 11. Enclosure github.com/wildernesslabs/3D_Print_Designs Netduino Breadboard Relay Power Distribution LCD + Rotary Encoder
- 13. 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; Netduino.Foundation:
- 14. TextDisplayMenu
- 15. 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; } }
- 18. Dehydrator App Solution Architecture - Controllers Main() launches App. App instantiates peripherals Features managed by controllers.
- 19. 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; }
- 20. 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(); }
- 21. PID Tuning
- 22. Web Server Purpose-built for Netduino. Modern, RESTful Web API/ Built-in JSON Support.
- 23. 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
- 25. 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; }
- 26. What future tech will you build?
- 27. Vancouver, BC - June 20th Mountain View - June 25th San Francisco - June 26th Portland (PADNUG) - July 3rd More dates coming! Upcoming Events Roadshow Netduino Contest Device Deadline - July 2nd Project Deadline - July 31st
- 28. Thanks. www.wildernesslabs.co Code here newsletter: bit.ly/2rBfP4Y slideshare.net/bryancostanich Github.com/WildernessLabs/Netduino_Samples/Netduino.Foundation/ Dehydrator blog instructs here. blog.wildernesslabs.co
- 29. Full .NET Standard Apps Manage via the cloud (deploy, monitor, update). Secure from hardware up. Advanced IO support (display, camera, CAN, etc.) meadow © 2018, Wilderness Labs, Inc.
- 30. MCUs vs. CPUs/SOCs Price: $5 vs. $25+ (CPUs require additional components). Energy: Battery vs. Dedicated Power OS: Micro RealTime OS (RTOS) vs. Full Linux API: Limited GUI vs. Full GUI Framework* *Latest generation of MCUs have 2D gfx acceleration.