Posts tagged WiFi
WeMos D1 Mini ESP8266 Arduino WiFi Board
WeMos D1 Mini ESP8266 Arduino WiFi Board

The WeMos D1 Mini is an inexpensive ESP8266-based WiFi board that is low-profile but just as powerful as any NodeMCU or ESP8266-based microcontroller. The D1 Mini is incredibly versatile because it is inexpensive, WiFi-enabled, and fully compatible with the Arduino platform. In this tutorial, the ESP8266 library and board manager will be introduced in order to get the D1 Mini acting as an Arduino board. Then, a simple web page will be introduced with the intention of harnessing the WiFi capabilities of the module. The D1 Mini will act as a web server, allowing any WiFi-connected device to interact with the board and control its pins wirelessly.

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Arduino, Electronics, ProgrammingJoshua HriskoArduino, D1 Mini, Arduino ESP8266, ESP8266 WiFi, ESP8266 Server, ESP8266, WiFi, WiFi Project, WiFi Module, Arduino WiFi, Arduino IoT, Arduino WiFi Server, Arduino Server, D1 Mini Arduino, D1 Mini ESP8266, ESP8266 D1 Mini, WeMos, WeMos D1 Mini, WeMos ESP8266, WeMos WiFi, Server, Web Server, Arduino Web Server, Arduino Boards Manager, Arduino LEDComment
NodeMCU Tutorial Series Part II: NodeMCU Server Control Over Local Area Network
NodeMCU Tutorial Series Part II: NodeMCU Server Control Over Local Area Network

This tutorial takes full advantage of the ESP8266 WiFi chip by serving a local webpage to control the general purpose input and output (GPIO) pins on a NodeMCU microcontroller. Some basic HTML and CSS programming methods will be utilized to create a stylish webpage that is both asynchronous (AJAX) and input-driven - this will give the user the ability to control the pins on the microcontroller. For the current example, an electromagnet and LED will be controlled using pulse width modulation (PWM) and simple high/low logic, respectively. The PWM control allows the user to change the voltage to the component, altering the magnetic field of the electromagnet. For the LED, the traditional digitalWrite() method will turn the LED on and off.

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Arduino, Electronics, ProgrammingJoshua HriskoNodeMCU, ESP8266, WiFi, Module, WiFi Module, WiFi Project, Arduino IDE, NodeMCU Arduino, Arduino NodeMCU, Arduino WiFi, NodeMCU Board, Electromagnet, Arduino WiFi Server, Arduino Server, NodeMCU Server, Arduino Electromagnet, Arduino HTML, Arduino CSS, Arduino AJAX, ESP8266 Server, ESP8266 NodeMCU, ESP8266 WiFi, ESP8266 AJAXComment
NodeMCU Tutorial Series Part I: Arduino IDE and Blinking an LED
NodeMCU Tutorial Series Part I: Arduino IDE and Blinking an LED

NodeMCU is a WiFi platform that integrates the ESP8266 system on chip hardware with the familiarities of open-source software. The NodeMCU is powerful because it endows users with the ability to create Internet of Things (IoT) projects at a relatively low cost with tools readily available and open to the maker community. NodeMCU is fully compatible with the Arduino IDE, which is the method for programming the board in this tutorial.

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Arduino, ElectronicsJoshua HriskoNodeMCU, ESP8266, WiFi, Module, WiFi Module, WiFi Project, Arduino IDE, NodeMCU Arduino, Arduino NodeMCU, Arduino WiFi, NodeMCU Board, NodeMCU LEDComment
Internet of Things WiFi and Bluetooth Mesh Network with Particle Argon and Xenon Boards
Internet of Things WiFi and Bluetooth Mesh Network with Particle Argon and Xenon Boards

In the tutorial, the simplest integrated IoT mesh network is explored, where Argon (WiFi + BLE) and Xenon (BLE) Particle boards are used to create an ultrasonic range detector (HC-SR04) that notifies an LED whether a threshold value has been crossed in front of the sensor. When the threshold is reached, a ‘trip’ is communicated to the mesh network and notifies the system via Bluetooth and WiFi.

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Bluetooth, Electronics, ProgrammingJoshua HriskoParticle, IoT, Internet of Things, Mesh, Mesh Network, Xenon, Argon, BLE, Bluetooth Low Energy, WiFi, HC-SR04, Ultrasonic Rangefinder, Ultrasonic, Rangefinder, Programming, IDE, Code Comments