Top 6 affordable cellular IoT hardware devices

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Image source: Ericsson What is cellular connectivity? Cellular communication consists of GSM(2G)/3G/4G/5G standards operating over 900/1800/1900/2100MHz frequencies.

Cellular-enabled IoT is here — and it’s making long-range connectivity easier and more affordable than ever. Here’s Ubidots’ top 6 affordable cellular IoT hardware devices.  Continue reading “Top 6 affordable cellular IoT hardware devices”

Connect your ESP8266 to any available Wi-Fi network

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The ESP8266 is a microcontroller developed by Espressif  Systems. Known as a WiFi Module, this microcontroller has the ability to perform WiFi related activities like Internet of things applications and home automation. Ranging in price and features, there are many types of ESP8266 modules available, but all of them are incredibly useful for IoT world.

Regardless of the IoT application you’ve developed, when using the ESP8266, you must set the WiFi credentials into the ESP8266’s firmware to establish the required connections and be able to send data to the cloud. This is one way to connect, but you can also build your own access point into the board making an universal firmware which will establish a connection in any network available just by pressing a button.

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Top 4 online tools to simulate HTTP requests

The Hyper Text Transfer Protocol (HTTP) is a client-server protocol powering most of World Wide Web. Every time you surf the web, your browser is sending HTTP request messages for HTML pages, images, scripts, and styles sheets. Web servers handle these requests by returning response messages containing the requested resource, completing the HTTP request-response cycle.

Just like your browser or mobile phone interact with the web through HTTP requests, IoT devices also make HTTP requests to external servers to get their data online. In this guide we describe some available tools to simulate a HTTP requests from a client to a server like Ubidots. Hopefully this will help you test your IoT communication before actually coding your device. Let’s get started! 🙂

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How to simulate a TCP/UDP client using Netcat

This piece is here to introduce you to the Server and Client Concept. Firstly, how does the Server/Client concept work within Internet of things? The client is the device that initiates the communication. The server is Ubidots (or any other server connection), that will accept connections and manage the data transfers using a simple protocol like TCP or UDP. This article will show you how to simulate a client using a usefull tool called Netcat and realize the immediate connection using your own computer’s terminal.

To learn more about of managing your data with Ubidots, reference Send Data to Ubidots over TCP or UDP.

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Controlling Industrial Flow Using IIoT Connected Devices

Industrial process control has long been associated with legacy systems in the shop floor. As Internet technologies continue to advance, bringing increased security and connectivity, manufacturers have begin to turn to connected devices to bring their industrial processes online.

This video, made by our friends at VERSE Technology, shows a practical example of how a Liquid Injection process can be controlled remotely from the Internet.

 

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Build a Tank Volume Reader for Under $30 using ESP32

The Internet of Things has brought a lot of formerly complex device applications into the homes of many craft brewers and wine makers. Applications with level sensors have been used for decades in large refineries, water treatment plants, and chemical plants. With sensor prices falling, now both industrial and DIY can monitor the volume of any tank, barrel, or canister.

The sensors available on the open market can sense most anything and are classified accordingly. Sensor used for measuring humidity are termed humidity sensor, pressure called pressure sensor, distance are called position sensors, and so on. In a similar fashion, the sensor used for measurement of fluid levels is called a level sensor.

               

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Build a People Counter for $30 Using an ESP8266 and NodeMCU

A people counter is a device used to measure the number of bodies traversing an entrance, hallway, street corner, etc. If you need to know how many people exist in a space – this is your simple solution. Typically used in retail stores, large events,, and smart office buildings, this counting technology has provide insights to both the number of bodies in an environment and how they are behaving in said environment.

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SONOFF Dual Tutorial: Control Your Electrical Appliances Remotely using MQTT and Ubidots

In this guide you will learn how to control a couple of 110V appliances over Wi-Fi for $9, using Itead’s SONOFF Dual.
Compared with consumer-grade WiFi smart plugs in the market, the SONOFF is a great alternative for making smart home and even industrial IoT projects at a larger scale. Moreover, it is based on the popular ESP8266 Wi-Fi chip, making it compatible with the Arduino environment and other resources like our ESP libraries at Ubidots.

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