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60 views

Is MQTT a good choice for my application?

For a university project I need to have a couple of "things" that collect data and which we will then be able to view and manipulate. At the moment each of the devices will consist of a few ...
0
votes
1answer
40 views

Method to send data from a device to a backend

I have tasked myself with building a simple temperature sensor device, using a thermocouple and stm32 microcontroller. I want to be able to take readings at regular intervals (every hour or so) and ...
0
votes
0answers
16 views

Does the choice of vendor for a Zigbee Smart Light have impact besides the device specs?

I am confused about the choice of vendors and where it impacts what I can / cannot do. I want to add a couple of different connected lights (mostly LED stripes). I play with the idea to buy stripes ...
1
vote
2answers
114 views

Looking for thermostat with web interface, MQTT capability, not dependant on cell phone apps

Does anyone make a thermostat with (ideally wired ethernet) or wifi network connectivity where the device has a web gui interface that can be accessed and programmed with a browser (ie not dependent ...
0
votes
0answers
10 views

viewing and controlling tv from laptop

hi all i was wondering if there was a way to remotly view and controll one of my smart tvs my problem is my little one shouts down every 10 mins for me to put something on her youtube neadless to say ...
1
vote
1answer
90 views

Connect to Mqtt over websockets

I'm trying to connect on a broker with the following script #!/user/bin/env python import paho.mqtt.client as mqtt import random import requests import warnings import LoggingManager logger = ...
0
votes
1answer
25 views

Is there a Hub that can receive a 915Mhz signal and report on it?

I'm looking for a device that can detect (and report to my raspberry pi) the presence of a signal from my Switcheroo: Switcheroo - Sync Lights with No App, WiFi, Bluetooth, or Remote Control | Change ...
0
votes
0answers
52 views

How to connect the Arduino MKR GSM to the Arduino IoT cloud service?

I am having trouble connecting my MKR GSM to the Arduino Cloud platform. My code is shown below: The .ino file. /* Sketch generated by the Arduino IoT Cloud Thing "Bin One" https://...
1
vote
1answer
53 views

Create and manage thousands of "things"

I'm working on a project that might grow up to several thousands of things. The management is on AWS. My lack of knowledge is about practical operations, like the creation of the things. Currently we ...
1
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0answers
21 views

Protocol that supports data integrity with intermittent connectivity?

Currently we are using LwM2M but we are running into use-cases for which we can't find neat LwM2M features. I also looked at MQTT but it seems to have the same struggles. These use-cases include: ...
3
votes
1answer
117 views

How to speed up first Mosquitto message?

When sending MQTT messages, first message arrives within 2 seconds and subsequent messages sent within less than 20 secs from first message, arrive in about 0.5 second. I would like to speed up those “...
2
votes
1answer
57 views

How to collect data from AM 2302 temperature sensors over long wires?

I am trying to monitor the grain temperature in 4 roughly 25ft grain bins. I currently am monitoring temperature in one 15ft bin with the AM 2302 sensor, and it appears to be working. I just made a ...
2
votes
2answers
51 views

Is using remote database (firebase) wrong idea for home automation system?

I am working on home automation system and I my idea was this: There will be client app, which will be running on a classic HTTP server (on internet). It will communicate with firebase realtime (NoSQL)...
1
vote
0answers
89 views

Nest box monitoring with ESP32: suitable camera module?

I'm working on a remote (off grid) nest box monitoring project, which should be both low-cost (volunteer-funded) and low-power. No video streaming required, only a snapshot over mobile network every ...
0
votes
3answers
89 views

Noob looking for platform [closed]

Long time web programmer now getting into electronics as hobby projects and perhaps small custom productions. I'm partial to using microcontrollers instead of Pi's, because I'm thinking I don't need ...
2
votes
0answers
37 views

Android or Linux + Electron for consumer facing GUI [closed]

I’m looking to build a consumer facing IoT product that involves a display. I have been debating whether to use Android or Linux + Electron for the app, which will be running kiosk style all the time. ...
0
votes
1answer
35 views

Device Data to Dashboard: What architecture do I use (example inside)?

I want to filter my device data through a rule engine where I apply different actions to it before storing and displaying it to the user. I need to store this data into a time series database and I ...
2
votes
2answers
87 views

Python Paho MQTT 2.5 KB messages not sending for days, while 0.1 KB messages send fine

I've got powerful dual-core IoT gateways in the field with high-speed cellular modems and good internet connections, but they fail to send 2.5 KB MQTT messages to my AWS IoT message broker. My program ...
3
votes
1answer
37 views

Automating motorized shades

I have some non-smart motorized shades that can be raised/lowered with a remote that came with them. I’d like to automate them via Alexa. Off the top of my head this would require sniffing the ...
1
vote
1answer
22 views

Do something when no motion detected in Hue

Is there a way to turn on a device (a hue smart plug in this case) when the hue motion sensor detects no more motion? We have a fan that is like to be on when the room is empty, but off if anyone ...
1
vote
1answer
45 views

What types of proximity sensors would fit this bicycle application?

I'm looking into proximity sensors for bicycle attachments. The idea is to detect when a car passes close by to a rider. What are some types of proximity sensors that would be: Cheap Range up to 2 ...
1
vote
1answer
38 views

Wheel skid detection

I am working on a project which sensed four speed by using hall sensor attached to wheel by using raspberry pi. I have wrote program for that only issue with that it gives fairly good results when ...
3
votes
1answer
34 views

Diff-patch algorithms

I am studying about incremental programming of restricted (low power) IoT devices and discovered that many diff algorithms have been introduced by the literature (DASA, R3DIFF, DG, etc). Trying them ...
1
vote
0answers
133 views

How to Define Default Spotify Account for Google Home?

We have a number of smart speakers around the house connected to Google Home. We have multiple Spotify accounts running under their Premium Family Plan. One of our Spotify accounts is the "house&...
3
votes
0answers
25 views

NetBIOS visibility in Windows IoT Core

I am trying different approaches to creating a simple NAS using a Raspberry Pi and decided to give Windows IoT Core a try; considering that other computers in my network are primarily Windows and ...
0
votes
0answers
95 views

Chromecast, Ubiquiti/Unifi and netflix

I am having some trouble to connect the netflix app from my android app to a chromecast. Briefly, it takes a long time (from 5 to 30 minutes) until the cast icon appears in my netflix android app as ...
0
votes
1answer
36 views

STM32L475 X-CUBE-GCP sample application not correctly signed by trusted CA

I am trying to make X-CUBE-GCP sample application SDK working. I am not able to connect to GCP cloud because of repetitive error - "The certificate is not correctly signed by the trusted CA"....
1
vote
1answer
54 views

Access Raspberry Pi behind a NAT firewall through Internet

I have been developing projects with Raspberry Pi 4. For the current project I am running a NextCloudPi server on it. I am able to access the server using my Internal IP. I want to access it using a ...
1
vote
0answers
50 views

Flush-mountable smart light remote switch - Replacement for Lutron Connected Bulb Remote?

The Lutron Connected Bulb Remote was a great little light switch that could be flush mounted in a US style switch plate for a professional look. It was discontinued in 2018 or so. Hue has the Smart ...
3
votes
1answer
86 views

Detecting static human? How? Which Sensor?

I am new to this community and I apologize for my bad English. I am interested in Home automation I am working on my new project. Where the requirement is to use a sensor for Automatic Light on/off ...
0
votes
1answer
34 views

Can I disable read access to an SD card by removing the read wire? [closed]

I want an internet connected host, such as a Raspberry Pi, to be able to write uploaded files to a directly-connected SD card, but I don't want it to be able to read the card. This is for protection ...
0
votes
1answer
74 views

Low Bluetooth antenna problem on my PCB (Sim800c)

I have my PCB that I have SIM800c module with Bluetooth V3. My module GSM is working perfectly but my BT has just a few centimeters board (I have tried 3 different modules after upgrading their ...
1
vote
1answer
517 views

ESP32 proximity detection - how near, far and how accurate can it be?

I did some brief search on the matter, but it doesn't really help. I want to detect when people approach each other too closely, and - possibly, in the future - leave too great a distance between one ...
1
vote
1answer
40 views

Lost power supply while flashing SONOFF S20

Yesterday I successfully flashed three out of four S20 v2.1.0 devices with ESPHome firmware. While flashing the fourth one, I accidently interrupted one of the cables (most likely the power supply [3....
-1
votes
1answer
39 views

What is a pseudocode breakdown of the MQTT protocol for cellular devices?

I was wondering if anyone can give me some pseudocode structure that outlines the general procedures that need to happen to connect over cellular to a remote server using MQTT? To be specific, I ...
0
votes
0answers
46 views

Tracking speed and direction of golf ball

I'm working on a prototype for a cheap launch monitor as a cheap alternative to the expensive ones on the market atm. Question: I'm looking for a sensor or sensors that can track the following High-...
0
votes
0answers
16 views

iMX6ULL can't connect to WiFi if band-steering is enabled?

We're using the iMX6ULL and the LBEE5KL1DX WiFi/Bluetooth module. We are experiencing a problem where our device times out anytime it tries to connect to a WiFi network with band steering enabled - it ...
3
votes
1answer
165 views

LWM2M Bootstrap Factory versus Client

In the process of building a device that will utilise LWM2M protocol. Referring to the protocol specification here we have made a good stab at laying out the uplink and downlink packet specification. ...
1
vote
3answers
78 views

Open source IoT framework similar to Azure IoT

Are there any open source IoT frameworks/runtimes similar to Azure IoT but without vendor lockin, software that will basically run on bare metal device and pull down and run containerized images from ...
1
vote
1answer
33 views

ds18b20 reading oscillating [closed]

I have two ds18b20 connected in star topology (3m cable) to a wemos d1 mini inside a cold chamber and sometimes the temperatures are like following a sinewave. Any idea where that might come from ? ...
3
votes
1answer
64 views

Monitoring temperature using AWS IoT

I've developed an Android app for my dad for monitoring temperature from a specific room. He wants to be able to see the temperature even when he is not home. I got working with Amazon IoT and it's ...
2
votes
0answers
33 views

Particle.io argon delay time as var

I have everything working wonderfully but I want to accomplish one more thing and I'm not sure how to go about it. Part one to this question: Under command=="loops" I have a delay() function....
1
vote
0answers
37 views

Is it possible to boot from the sd-card on the HDK8150 board?

I recently acquired the HDK8150 board. I am pretty interested in running a non-Android Linux OS there. After some hours of going through I found some interesting stuff: I found that from Linux kernel ...
0
votes
0answers
60 views

Build a 220 V ~ 40 A WiFi switch for controlling my pool pump so that it can replace my mechanical timer

Looking at the Migro Outdoor Smart Wi-Fi Outlet Box it appears it's just a Wifi Switch, Contactor and Manual override switch? (just found that this is on the Sonoff itself) This was asked in the link ...
3
votes
1answer
70 views

Best way to set up a portable local IoT network?

I'm working on a project that requires multiple ESP32s to be able to receive a signal from a smartphone in order to close/open a set of doors. The catch is that this will be happening in a remote area ...
4
votes
0answers
134 views

Monitor Eufy Homebase from iPhone Apple Home?

I have a Eufy Homebase 2 with 6 EufyCam 2C and a wired doorbell connected. The Homebase is setup as a “room” in Apple HomeKit. The Homebase is Ethernet connected to Xfinity new router, with wifi ...
1
vote
0answers
282 views

MH-Z19B span point calibration: Anyone managed so far?

According to datasheet you can span point calibrate the MH-Z19B CO2 sensor. https://www.winsen-sensor.com/d/files/infrared-gas-sensor/mh-z19b-co2-ver1_0.pdf E.g. with 0xFF 0x01 0x88 0x07 0xD0 0x00 ...
1
vote
0answers
17 views

Wifi camera support for Kindle Fire

Which outdoor Wifi cameras with internal memory (e.g. microSD) are supported by Kindle Fire? I'm looking for cameras so my 94 year-old mom with macular degeneration can watch birds at her feeder on ...
1
vote
0answers
33 views

How to use API request to turn on/off a smart switch +/- Smart EV Charger

I am new to API. My first project, if possible, is to be able to control a smart socket, to turn it on/off depending on if we are exporting energy to the grid. I have been able to get the API to work, ...
1
vote
1answer
60 views

Can Alexa turn on and off individual outlets and switches?

I'm looking to buy an Alexa just had a few questions. If I have multiple smart plugs and light switches can I ask Alexa to turn one on particular such as an example Alexa turn on vanity light and only ...

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