IOT

I have set up a second instance of Home Assistant (named sandbox) where I can play with new releases and features without risking my main Home Assistant. I have always used an MQTT broker external to Home Assistant, but it occurred to me that if both of my Home Assistant instances are looking at...

I'm working on my first MQTT data collection project, and I need to write all the messages into one text file for later analysis. I do a little embedded programming in C, but I haven't written software to run on a PC in years. Where should I start? Will I need to write code (or maybe there someth...

I'm considering buying the Sure Petcare Microchip Cat Flap Connect. I like the idea of being able to set a schedule for when my cat is allowed to exit the house and also to control it via the internet when I want to change the schedule temporarily. It says "You’ll need [to also buy the $85] Hub ...

Trying to get an understanding of the cloud side compute power comparison (and cost) for say 10,000 devices sending data to the cloud using HTTPS Vs MQTT. My co-worker says keeping 10k MQTT connections alive would eclipse the cost of having the same devices HTTPS POST. My intuition says it's prob...

I just bought an ESP32-C3-DevKitC2 from Espressif, which features an onboard color LED. I'm a bit of a newbie in this space, so I thought I'd start by trying to get a simple "blink" program running. I've installed the Espressif VSCode extension, and I can successfully compile and load (flash) ...

I am trying to see the IPs of all the devices connected to my WIFI. Everyone suggests to use the command arp -a in the terminal but when I do so I get always the same list of devices. I try to connect new ones but they do not show up. However if I connect to the router administration site (192.16...

I want to develop a quality water IoT system. The picture below shows the idea. I'm not sure the device that I have to use for this project. My idea is: Every X minutes (I'm not sure the time) get information from the sensors. Run some machine learning algorithms and/or deep learning algorithms...

Many IoT systems have 3rd-party APIs people have reverse-engineered so they can add custom integrations, but these all work by impersonating the app, receiving updates from the server. If I'm on my local network and so is my smart-plug or door-bell or whatever, is there a way to intercept the out...

I'm trying to build my own motorised roller blinds based off this project. It uses the Stepper_28BYJ_48 library. The problem I'm having is that the motor is either very slow and jittery, going forward 1 step at a time with a slight pause, or it overheats, i'm assuming, and restarts the device (No...

I am searching for a way to make my home "smart". I have raspberry pi 4 and pixel 2 phone. I thought that it would be cool to make my dumb devices "smart" and control them via Google Assistant from Pixel phone. I stumbled upon this picture (source) - it describes request lifecycle, and I am wonde...

I have an architecture where many sensors (hundreds of them), located in different places (hundreds of kilometers apart), send data to a remote database. Is MQTT suitable for this kind of configurations?. I was thinking in installing the MQTT broker and my backend in the same server and make th...

I am working on a project where I have a sensor connected to a WIFI module. Whenever the sensor is triggered, it will send a message to the cloud via MQTT. Eventually I tens of thousands of these devices deployed everywhere. These sensors will rarely be triggered, maybe only once a week randomly....

I am new to IoT and LoRa, and still trying to grasp the scope and capabilities after discovering a whole technology I never knew existed. I have read some about LoRaWan and IoT, but am confused about the technology. Is LoRaWan and IoT wide area networks that are independent of the world wide we...

It seems like every Smart Plug I see on Amazon (including well-reviewed ones) require me to sign up, giving a lot of device, location, and personal information to a company I don't know or trust (often in an overseas country). I'd like to control & monitor energy usage using my mobile device (i....

Are there any smart plugs out there that connect over Wi-Fi, don't require a hub, and don't use the cloud/don't require an internet connection? The idea is that I should be able to somehow turn them on or off from another trusted machine on the same WLAN. Whether that machine is internet-connect...

Is it possible to create an IFTTT widget which can turn on a LIFX light and fade it off over a specific time? I had thought configuring a button to turn the light on then set a fade duration using the advanced settings would work. Nope. Then I tried creating two web hooks which fire on receipt ...

I'm working on a device powered by the LinkIt Smart 7688 at the moment, and having some driver issues with building a new OpenWRT image from scratch for it. One of those issues is that the WiFi driver blobs don't seem to have been updated for some time (~2017?), and won't work with the current ke...

I have my electricity and gas meters connected to an IHD (In-Home Display), and the IHD is connected to my router. I have access to all of the address of the IHD. I am wanting to get the energy data from the Smart Meters, in order to integrate it within an app. I have experience with Javascript...

I'm reasonably new into the smart home stuff and IoT's, but after some research I look to use something like HomeAssistant or OpenHAB. From what I'm reading you need bridges for specific devices, unless they support Z-Wave or Zigbee (may well be wrong on this...). So, being a coder I like open ...

I am new to ESP8266 boards and IoT programming and I don't know how to describe better what I want to do without a picture. Question: How to send continuous data from 4 esp8266 WiFi clients to a webpage or to an application which handles all of them in parallel without introducing noticeable d...

LoRa (Long Range) technology is one of the promising technology which offers long range communication with low power consumption. Therefore building a device that can be deployed in no network area or to achieve long distance such as 5km or more with low power consumption feature it is considered...

I have created a Publisher Script using Paho MQTT JavaScript API which publishes values to two topics MyHome/Temp and MyHome/Hum. The script is running successfully and publishing data to CloudMQTT broker. In my Subscriber script I have subscribed to these two topics and printing them in Console...

I'm in the process of building an IoT device using ESP8266. The device will eventually contain a couple of motors, and I would like to control these motors using MQTT. I would like to make the device as cheap as possible, so I would like to avoid things like displays and keyboards. So, when the...

I currently have a Mosquitto MQTT Broker on which some IoT Nodes publish their information on a specific topic. I have an instance of Telegraf from InfluxData running that subscribes to this topic and stores the information into InfluxDB. Requirements: I understand that the information once pub...