Setting up Node-RED and your Wireless Sensor Network
Quickly get Node-RED set up to communicate with your Wireless Sensor Network with zero code required.
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Quickly get Node-RED set up to communicate with your Wireless Sensor Network with zero code required.
Code-Free Programming If you’ve been following our recent forays into the latest of IoT, you are probably already familiar with Node-Red. If you haven’t, you’re in for a treat! In short, Node-Red is a visual flow builder that was developed with IoT in mind, you can think of it as a way to build a program without actually writing any code. In this article, we’re going to focus on our node-red-wireless package that we use to integrate our Wireless Enterprise Line into this amazing framework. If you are new to our Enterprise line of Wireless Sensors, check out the intro
Build In the spirit of making hardware more accessible, we’ve had our noses to the grindstone building new functionality for our favorite IoT UI, Node-Red. If you’ve never heard of it, check it out here. If you haven’t used this amazing tool yet, get ready for a treat! Node-Red is a flow-based programming tool that lends itself extremely well to IoT, and comes preloaded with enough functionality to play with that you can easily burn an entire day experimenting. If you are already familiar with Node-Red and how to get it up and running, you can skip this tutorial, just know that
IoT Arduino Wireless Temperature Humidity Sensor Temperature Humidity sensors are one of the most common and widely used sensors with Arduino and other IoT platforms. There are so many use cases where a temperature humidity sensors can be used to detect potential problem like frozen pipes, broken freezers, malfunctioning air conditioning, water/humidity detection in crawl spaces and much more. In this IoT Arduino wireless temperature Humidity sensor project we will interface a long range wireless temperature humidity sensor with Arduino. These readings can be used to set an alarm or to send an alert. There are so many sensors which
USB Relay Control devices are a common and convenient choice for basic computer controlled switching applications. When considering a USB relay board, the application should be critical to your choice. Not all USB controlled switches are ideal for all applications, particularly when it comes to high voltage switching or switching of inductive loads. Special precautions will be in order when controlling some types of devices, and electrically noisy devices can cause unreliable operation. Similarly, small signals loads, such as Audio or Video, can be adversely affected by the on-board relay, as not all relays can switch small signals. There are
Induction Suppression Capacitors Capacitors at a Glance Required for Handling Inductive Loads Motors Solenoids Transformers Capacitor Absorbs the High Voltages Increase Lifespan of Relay Stops Interference of Microprocessor Logic Easy to Install Use with AC or DC Applications Not Required with Resistive Loads Managing Electromagnetic Interference Control Inductive Loads with a Induction Suppression Capacitor Capacitor Absorbs the High Voltages Generated by Inductive Loads A Capacitor Improves the Lifespan of the Relay and Reliability of the Board Handling Inductive Loads Perhaps the most overlooked aspect of relay control is proper handling of inductive loads. Inductive loads can best be defined as
Introduction If you are new to the idea of a computer controlled relay, then this introduction to switching and relay controllers will teach you all you need to know! A relay is best defined as a switch that is operated by an electromagnet. A relay controller is a device that is used to control a bank of switches. A relay controller works by turning on and off magnetic coils under logic control. A computer controlled relay driver allows your computer to send simple commands to activate a switch or a group of switches. Relays are ideally suited for controlling everything
Introduction to Serial Communications (RS-232) So, you might think serial communications is dead. A serial port is nowhere to be found on most of today’s motherboards. After all, you can’t even buy a printer or a modem that works from the serial port of your computer anymore. Webcams and Hard Drives are best connected through the USB port of a computer, and there’s no need for a serial port. Its just too slow, too old, and too obsolete….and that is exactly the idea that has to be reconsidered. Sure, Webcams and Hard Drives are best suited for a USB port, and
USB Virtual COM Port A USB Virtual COM Port allows you to use a USB Interface to talk to serial devices. This essentially gives users a simple pathway to communicating to peripherals using software development tools that support serial communications, a relatively common standard is most programming languages. If you have ever attempted to write a program that communicates with a USB peripheral device, you will quickly find that it is a rather daunting task. We began developing USB devices years ago, but quickly ran into a brick wall when it came to making our earlier USB devices user-friendly. So
Relay Logic is all about wiring up Relays for Logical Switching applications. This page demonstrates several simple ways to wire a relay for various applications. Relay Logic provides you with a guide for using NCD relay controllers, and how they can be wired for many types of applications. Use Relay Logic to control the forward or reverse direction of motors. Use Relay Logic to control lights using relays in standard applications as well as 3-way switching application. Our relay logic guide helps demonstrate the best ways to connect NCD relay controllers in real-world control applications. The COM (Common) connection of