All Questions
2,187
questions
-2
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0
answers
26
views
"Overall system architecture of IOT based solar power system"
The solar power data through IOT devices to be stored in centralized Linux server system
Below are some of the inputs that I have
Sensors and Solar power meter or solar power inverter
The rough design ...
1
vote
0
answers
14
views
Multi-admins/fabrics in Matter protocol
I am a newbie Matter protocol developer.
I am trying multi-admins/fabrics features. Could you please tell me how many ways to add a new admin into a node? Is the way to add without re-open the ...
- 31
0
votes
0
answers
6
views
How to use a tp4056 and a lithium battery on an esp8266
I am new to IOT and I would like to have your opinion on my wiring, I want to power my project with a lithium battery for that I use a tp4056 to charge my battery but also to power my breadboard I ...
- 1
-3
votes
0
answers
38
views
Spherical tensor sensors applications in Globe manufacturing
Tensor sensors
Globe
Can there be tensor spherical sensors applications in globe manufacturing?
I.e. Integrating globe product with Tensor sensor.
There would be advantages to have a wireless Globe ...
0
votes
0
answers
8
views
What could be causing ESP IDF to not recognize the content of my included header files?
ESP - IDF not functioning as expected. I've been trying to work on esp32s3 and skainet using esp-idf(ide not the eclipse or vs code plugin) and I am facing this issue constantly. Issue: I have made a ...
0
votes
0
answers
9
views
Jetson AGX Xavier - mmc_rx_fifo_overflow Meaning
Currently running JetPack 4.4 - L4T R32.4.3 on a ConnectTech Jetson Xavier AGX. We have our own custom application accepting data on one of the ethernet ports via UDP. Occasionally we’ll notice that ...
- 1
0
votes
0
answers
20
views
Credit/debit card machine to send bill to mobile app after payment
Hi all I'm totally new to iot, I just wanted to know if it's possible to send the bill from a credit/debit card machine to a mobile app after a payment, would to be possible, if yes any specific ...
- 1
0
votes
0
answers
14
views
Wired Protocol for Home Automation
I am designing a centralised home automation system.
Specifications:
Switch / Control
Lighting
HVAC
Take inputs from
Sensors (temperature, occupancy, etc)
Physical Inputs (Switch/Buttons)
Mobile ...
- 1
1
vote
0
answers
12
views
Intended use of Azure's Device Provisioning Service for IoT hubs
Suppose I have many IoT devices in the field that are only powered on intermittently. These devices are automatically provisioned using Azure's DPS. Suppose also I'm using SAS token which expire in 24 ...
- 111
1
vote
0
answers
20
views
LoRaWAN Multicast setup
I'm trying to create a LoRaWAN network with multicast using TTN. I have followed several videos and accessed anything I could find, but fundamentally it seems I cannot understand concept behind the ...
- 11
1
vote
1
answer
21
views
Gateway receives Join Request from end device, but it doesn't accept
I'm quite new to IoT in general.
I have a Dragino LPS8v2 gateway, and I would like to create a private LoRaWAN network for my end device (TTGO T-Beam).
What I did :
configure GW's LoRa parameters (...
0
votes
0
answers
15
views
How to advertize BLE custom data in Linux
I'm learning BLE and slightly got stuck with advertisements. I'm trying to advertise custom data representing an iBeacon with the commands below:
bluetoothctl
menu advertise
manufacturer 0x4C 0x00 ...
- 1
3
votes
1
answer
56
views
Do Matter over Thread IoT devices have WAN access?
This is a seemingly simple question. But I can't find an answer. Suppose I have a smart switch or light bulb, or similar Matter/Thread IoT device in my home. Can that device talk to the internet?
Let'...
- 130
1
vote
0
answers
16
views
Magnetic sensor NAS-DS01W0 (security concern about my network)
I am writing because I am a little unsure about a device I have just purchased and installed in my home network. I have bought a magnetic sensor to detect if a door is opened and closed. The model is ...
- 111
1
vote
0
answers
18
views
ESP32-S3 with AWS-FreeRTOS. Can't create a proper JSON with asprintf()
I have a MAC MOnterey 12.6.3 and installed all necessary espressif toolchain.
I just installed AWS-FreeRTOS in a ESP32-S3 and ran the mqtt/tls_mutual_auth example. This example is to publish a hello ...
- 131
0
votes
0
answers
12
views
Predictive Data Logger Device
I'm searching for an IOT componenet/device/automaton that logs date/time when it is used(button presses?), and has a simple output(Vdc probably) that turns on automatically over time when machine ...
- 1
1
vote
0
answers
14
views
Paho MQTT Client - on_message callback never happens
I have a Mosquitto MQTT broker (mosquitto version 2.0.11) running on a Raspberry Pi.
It is publishing regular messages on a specific topic, which can be seen by running
$ mosquitto_sub -h 192.168.27....
- 111
0
votes
0
answers
37
views
Which microcontroller should I select for my project idea?
I am an IT engineer but always wanted to learn electronics and IoT. I have a project idea in mind for which I am unsure which MCU should I use. I have previously used Arduino, ESP8266, and ESP32 for ...
0
votes
0
answers
27
views
Can't Connect to ESP32 in AP Mode
I'm trying to connect to an ESP32-WROOM-32 in AP mode, using the following micropython code:
import network
ssidAP = 'WiFi_ESP32' #Enter the router name
passwordAP = '12345678' #Enter ...
- 113
0
votes
0
answers
13
views
Why a requested/sniffed BLE characteristic handle mismatch on Linux?
I'm learning BLE and trying to sniff packets just to understand how communication happens. I do this with Wireshark on Linux and sniff traffic between the Linux machine and a BLE-powered wristband.
I ...
- 1
0
votes
0
answers
27
views
Universal control of ESP32
I need a help that, if exists a code, library, software which can control my ESP32 GPIO pins. ie, 1 code, connect to google home, alexa, home kit, home assistant, samsung smartthings, etc....(MATTER)
0
votes
0
answers
26
views
Can you reconfigure advertising packet during advertising BLE on ESP32
I'm trying to make a simple environmental sensing module on the ESP32 with ESP-IDF. I want to use BLE with gap only. I'm thinking of sending all the received data with the Advertising packets but ...
1
vote
1
answer
55
views
Unable to run micropython on ESP32-WROOM
I just took delivery of a trio of ESP32-WROOM-32 dev boards and am unable to get micropython to run on them. I've successfully flashed sketches from the Arduino IDE, but after I flash the latest ...
- 113
0
votes
0
answers
83
views
Do Jetson Orin Nano-like systems with 8GB RAM suffice to experiment with large language models?
I would like to experiment with a platform that can run a virtual assistant (think e.g. https://mycroft.ai/) so to perform tasks like speech-to-text, conversations, text-to-speech, image segmentation ...
2
votes
0
answers
26
views
How to setup “my” AC on Alexa?
So I setup Alexa with multiple smart home ACs, one in my room and another in the guest room. I’ve given the name as Guest Room AC for that, and mine is Mohsin’s AC. But when I come home and say “Alexa,...
1
vote
0
answers
17
views
Smart watch with eSim and continues heart rate and blood pressure [closed]
I'm looking for a smart watch model with eSim that gives me continues heart rate and blood pressure monitoring 24/7 with data transmitted to the cloud so I can see the reading from my PC.
Any ...
- 111
0
votes
1
answer
41
views
In theory, can I deploy Matter protocol on my cloud platform?
In theory, can I deploy Matter protocol on my Cloud Platform? Then the Matter device (Matter node) will communicate with the smartphone (Matter controller) through the cloud when they are not on the ...
- 31
0
votes
1
answer
171
views
Matter node behavior in Matter protocol
What is the difference between MQTT and Matter protocol? Can I send Matter message between two different networks if Matter devices using link-local address?
- 31
1
vote
1
answer
35
views
How do I access my Matter devices when I’m not at home?
How do device developers and major platform providers in the world such as Google Home, Apple, Tuya, and Aqara do to control Matter devices remotely??? Do they still use traditional IoT protocols like ...
- 31
1
vote
0
answers
18
views
Home app unavailable devices
With iOS home app, I’m seeing that all the devices on a particular bridge sometimes go offline until I restart my HomePod Mini. I know they’re not offline, since the HomePod turns them on or off with ...
- 11
0
votes
1
answer
53
views
How to Control a TV via Google-Home and Smart Life
I've set up a MoesGo Smart IR unit with Smart Life for a friend to control a TV. I can now use the virtual remote control on my phone to control the TV which is quite handy when he looses the physical ...
- 103
0
votes
0
answers
42
views
How to use DIY keyboard connected to spi (gpio) of single board computer
I want to build a diy keyboard which connect to the spi interface of the gpio header of the orange pi 5 (ubuntu/linux).
So far I have some sketches of the keyboard, the schematic is in progress.
The ...
1
vote
0
answers
17
views
Sonoff T1 3ch connects when powered by FTDI, not when powered by mains
I have two Sonoff T1 3CH switches running Tasmota 12.4 which both exhibit the same problem.
This works. Connect the Sonoff to my laptop via FTDI. Sonoff connects to my iot WiFi ssid
This does not ...
- 111
1
vote
1
answer
103
views
Unable to flash LilyGo 4.7 using PlatformIO
I'm trying to flash any of the official examples using PlatformIO on LilyGo-EPD47, which is ESP32-WROVER-E with eInk display.
The sketch builds, but when it starts uploading I get the following error
...
- 111
0
votes
1
answer
70
views
OPC UA vs MQTT for internal interoperability
I am working on a project which will require networking with multiple IoT devices and sensors (scales, temperature sensors, actuated switches, etc.).
I am familiar with the MQTT architecture, while I ...
- 201
1
vote
1
answer
59
views
Does Orange Pi 5 have PTP hardware timestamping support?
I'm looking for information about the Ethernet chip on the Orange Pi 5. I need an SBC that has PTP hardware timestamp support (IEEE 1588). According to OrangePi.org, the Orange Pi 5 has the Motorcomm ...
- 131
2
votes
1
answer
50
views
LoRaWAN Mesh Protocol
I'm interested in building a network that is based on the LoRaWAN networking protocols. I've seen multiple references to LoRaWAN supporting a mesh configuration (instead of the standard star network ...
- 121
0
votes
1
answer
227
views
Hacking wifi control of pet door
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 ...
- 129
0
votes
0
answers
26
views
Is it possible to install AWS FreeRTOS into a PLC P1AM-100 Arduino Compatible CPU?
I am about to buy a PLC - P1AM-100 ProductivityOpen controller and I was wondering if it is possible to install AWS FreeRTOS on it. SPECS
How to achieve the install?
- 131
1
vote
0
answers
53
views
How can I make my dumb TV bed lift smart?
I'm an experienced developer who is looking to make the foray into IoT hardware. I have written applications in C and C++ in the past and I'm currently interested in Rust. I have little to no ...
- 111
0
votes
1
answer
47
views
Generic Mobile Applications for Smart Home devices
This question is a bit generic, but what mobile applications exist to control Smart Home devices? I'm interested in generic applications, not in Alexa/Google/Apple/Samsung provided for their eco-...
- 101
2
votes
1
answer
62
views
What IoT software/web-services can be used to implement the basic "IoT device->Database ->Frontend" architecture?
I'm looking for the simplest (i.e least components) way to create the data logging/visualization system with the following architecture:
IoT Data (Plaintext HTTP POST) -> Database+data processing ...
- 21
0
votes
1
answer
24
views
Does 4G based OBD-ii device have mac or physical address? And alternative solution for restricting and whitelisting
I know that almost all devices need a mac or a physical address to work with the Internet. I want to know that GSM-based devices like OBD-II have such addresses. We asked the manufacturer and they ...
- 336
0
votes
1
answer
32
views
How can this PV-monitoring system communicate bidirectional
I've got a solar panel system with a Growatt inverter.
The system has a monitoring platform. To connect the inverter to the internet to let it communicate with the monitoring portal, you need a "...
- 131
0
votes
1
answer
17
views
Can a 4th Gen Chromecast ("Chromecast with Google TV") work in a group with Chromecast Audio?
I have five Chromecast Audio devices which produce 3.5mm/optical audio output from one source. I also have a 1st gen Chrome TV with HDMI audio [the "keyhole" shape] which cannot play audio ...
- 103
2
votes
2
answers
112
views
compute power for MQTT vs HTTP POST in cloud
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 ...
- 23
3
votes
0
answers
34
views
Smart bulbs do not turn on when mounted in a spot bar
I have bought 4 Philips Hue smart bulbs with an E14 socket.
I have tested each of the 4 Philips bulbs separately in a single socket fixture, and each bulb individually is working, detected by/...
- 131
1
vote
1
answer
48
views
Failed to connect to TCP server on ESP32 board
I wrote a TCP client in C and a TCP server in Python. The client runs on a ESP32S2 board while the server runs on my PC (virtual Linux OS) and both the board and PC are connected to the same Wi-Fi. ...
- 31
2
votes
1
answer
23
views
Circuit python express loads boot mode but doesn't flash .uf2
I'm having some trouble flashing CircuitPython to my Circuit Python Express. I successfully enter boot mode (LEDs are all green and red D13 light slowly blinking) but I can't flash anything. When I ...
- 21
2
votes
0
answers
30
views
Matter recommended SoCs
I'm working on climate control smart home thingy. The setup includes ~100 sensors and ~20 relays, currently operated by a python program on a Raspberry Pi, communicating over BLE with ESP32 boards ...
- 21