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Questions tagged [hardware]

For questions concerning IoT hardware, hardware recommendations, and hardware support. Read the full tag wiki before asking for hardware recommendations; there are specific requirements for a good question. Additionally, consider asking at Hardware Recommendations for general hardware questions.

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29 views

Reliable setup of MCU and cellular modem

I hope the title makes sense. I want to measure various environmental data (temlerature, humidity etc.) on farmland. To transfer the data I'd like to use a cellular connection. I know that there are ...
4 votes
3 answers
257 views

Devices suited for Industrial IoT

I was wondering which devices are used in IIoT applications. Are devices like ESP8266, ESP32, etc. (or other used in makers world) reliable for use on industrial/critical environments? If other parts ...
0 votes
0 answers
16 views

Device for conferencing in Cold Storage

What is a cost effective way of doing conferencing in a cold storage? The challenge that I'm currently facing are bad network, long latency, delayed respond, and low quality of video.
9 votes
2 answers
75 views

Rogue Start-Up of Robot sweeper

I have an Xiaomi Mi robot sweeper and at 7:00:40pm each day it is being started up by a rogue internet message. I saved the active IP table from the DD-WRT router firmware immediately before and ...
1 vote
1 answer
721 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?
2 votes
0 answers
20 views

how can I find Java Card products?

I am searching for hardware to help me get started with passive NFC Java Card 3.2 technology. I can't find badges or tags or any kind of NFC product that advertises running Java Card 3.2. I couldn't ...
2 votes
0 answers
50 views

How to Achieve Max Speed Transactions ( Transfers ) between Lora Packet Forwarder to Remote Server

I have a Lorawan devices that works as witnesser and beaconer. Simply it gets the Signal-Data from other same type of Lorawan devices. There is a Packet Forwarder software on that device OS and it ...
2 votes
1 answer
143 views

Using LoRa-RSSI to Estimate Distance in Outdoor Setting

Thanks here, I've tried to optimize the LoRa setup to ensure accurate or acceptable RSSI measurements and for distance estimation between multiple nodes and a master in an outdoor environment using ...
12 votes
2 answers
2k views

Running Philips Hue Entertainment with 3rd-party lightbulbs?

I bought this innr light bulb for my Hue system and it works just fine except for the fact that it isn't compatible with Hue Entertainment. As it turns out, no 3rd-party light bulbs are supported by ...
6 votes
3 answers
2k views

Why can't I update my Ember mug's firmware?

My Ember mug has a firmware update available, but when I try to update it the process fails at 50% during a reconnection step. How do I make sure the update is able to finish?
0 votes
0 answers
96 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 ...
0 votes
0 answers
48 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 ...
1 vote
0 answers
79 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 ...
1 vote
0 answers
45 views

UDP communication with XBee Wi-Fi S6B

I am an absolute newbie when coming to using these modules. I am trying to setup a basic UDP connection between my XBee S6B (UDP Client) to my computer (UDP Server). I have added my codes below. The ...
0 votes
1 answer
61 views

How to count people in a given area without using phone traffic data?

DESCRIPTION: I am working on a project to find out how many people are in a given region. Basically I want to make a heatmap showing how people move in a specific day throughout 24h. In order to do so,...
1 vote
1 answer
121 views

Controlling Google Assitant compatible devices via HTTP/MQTT

I would like to control an IoT device that is compatible with Google Assistant/Alexa/Smart Life locally within my network using some open API over HTTP/MQTT. Is this even possible or is the only way ...
4 votes
2 answers
2k 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 ...
1 vote
0 answers
184 views

Remotely controlled alarm

I would like to find, or if necessary, create a device that can be set to go off with a chime or alarm of some sort at certain times throughout the day. If that was all that was required, then no ...
0 votes
1 answer
30 views

Help selecting a microcontroler

I need you help, currently I`m searching for a microcontroller That supports ultra power mode. Has bluettoth support. Can be waked up by a wireless interruption. The microcontroller must be powered ...
7 votes
2 answers
5k views

Z-Wave switches with 2-way switched lights?

I'm looking for a set of Z-Wave (preferably Z-Wave Plus) components to use in order to merge two 2-way light switch circuits and allow control of both lights from all switch positions. I've looked at ...
3 votes
2 answers
138 views

How secure connection between modem and microchip

My board has a separate Quectel MC66 modem and STM32 microchip. The communication between modem and microchip is AT Commands. If a hacker connected a wire between modem and microchip, he could have ...
2 votes
1 answer
77 views

Does iPhone 11 device contain multiple UWB receivers?

Does iPhone 11 device contain multiple UWB receivers? Angle of Arrival (AoA) is often required for many applications for UWB enabled devices. I wonder if modern UWB enabled devices i.e. iPhone 11 ...
3 votes
0 answers
50 views

Can IoT devices share their own capability/resources with another device?

Hello IoT Stack community ! I am sort of a beginner at IoT and looking for some guidance and help I am struggling to wrap my head around the following concept; Is it possible for IoT Device to share ...
3 votes
1 answer
103 views

Can a device like chromecast degrade over time?

I'm having trouble connecting to my chromecast in any apps. Sometimes it works fine and sometimes it just won't work. I can see that it is connected to my WiFi network and I've read the very helpful ...
0 votes
0 answers
53 views

TFT screen shield worked and quickly quit

I bought an Arduino Uno board and the Elegoo 2.8" TFT Shield. I plugged them together. It just worked. Examples from Elegoo including graphicstest and displaystring worked great. Then I tried ...
1 vote
0 answers
852 views

ESP32: no signal output on I2C bus [closed]

I have an ESP-WROOM-32 (I2C master) and an ATmega328p (I2C slave, address 0x03) assembled on a prototype PCB using external 6k8 pullups. I'm using the ESP's default I2C pins 21 (SDA) and 22 (SCL) as I ...
4 votes
1 answer
282 views

Standalone NFC/RFID with WiFi/ethernet network connection

I spent many hours looking for a device for my iot project. So far, everything I find does not meet my expectations. I prepared two prototypes - one based on rpi zero and one based on esp32, but I ...
1 vote
0 answers
33 views

Mains circuit phase balancing relay?

I am looking for a device, like a special relay that would allow me to dynamically switch/move some of my home appliances between the 3 phases that I have on my mains circuit. Is this possible? The ...
-1 votes
1 answer
95 views

Non-locally Electrically Programmable Logic Gates - Technological Advances Progress

Preface: I’d like to clarify that I understand what a relay is and that a PLC uses a fairly conventional microprocessor that only digitally establishes logical logic gate configuration as a digitally ...
1 vote
0 answers
42 views

Are there still any cheap hardware solutions to providing IoT devices with cellular connection with the shutdown of 2g networks

I am currently attempting to design a small custom PCB based IoT business cards that communicate over a cellular network for the purpose of impressing employers. Since I will literally be giving these ...
1 vote
1 answer
100 views

IOT prototyping

I am having a difficult time figuring out how to prototype in the IOT realm. This mainly stems from the accessibility of components and modules; and the size of them. Here is what I have done so far. ...
24 votes
4 answers
2k views

Making a smart light switch

I want to make a home automation system, and I need some computer-controllable switches. The reason I can't use relays is that I also need the switches to be switchable manually and not ...
4 votes
2 answers
155 views

What are the boot requirements for an IoT device for the automotive industry? [closed]

Are there any specifications for a IoT device that's targeted for the automotive industry? I refer to a standard that puts constraints on boot and restart times for both the HW and SW? Let's say I ...
20 votes
2 answers
4k views

Selecting a microcontroller for a battery operated data collection project

I am planning to measure water level in a well, which is about 10 m deep with maximum water level up to 5 m. My plan is to use ultrasonic sensor HC SR04 to measure depth, transmit it via ZigBee to a ...
14 votes
4 answers
2k views

Which microcontroller and programming language should I use for an Internet-enabled weather display?

I am a newbie in IoT and want to start my career in IoT. As I search on Google for startups in IoT, I found many blogs. And I found the languages used in IoT like C#, Java, Node.js, and the ...
1 vote
0 answers
44 views

Guidance for a data logger and radio

I've currently been working with a consultant, whom recommended we utilize an architecture that is based off the Microchip ATMELAVR 8 bit Arduino framework. The board is called a Mayfly, picture ...
4 votes
1 answer
66 views

Control Raspberry Pi depending on Wifi-Users

I am creating a "digital dashboard", consisting of a TV and a Raspberry Pi 3B+. The TV just shows calendar, time, weather, etc.. In the tutorial I am following for that, the creator uses a ...
8 votes
2 answers
839 views

UK-compatible (240VAC) receiver/controller for ceiling fan with dimmable lights

I have a 3-speed ceiling fan with integrated dimmable lights which when installed prior to my owning the house was fitted with an infrared wireless receiver. For a long time the remote did not work (...
1 vote
0 answers
69 views

mail in box detector

I would like to monitor my physical mailbox so I can know when something is inserted in it. The reason is this was an abandonned mailbox for years so people are used to put the junk mails in it (...
1 vote
2 answers
100 views

How to control an ESP8266 via the Wi-Fi?

Summary I would like to build (ideally based on ESPHome) a device with a buzzer I can trigger remotely via the network. Context I have several systems built around my home automation system: Home ...
0 votes
1 answer
40 views

Identify the ancient IOT hardware model and find out its driver

Found from the bottom of my gadget box, I am trying to use this board for my hobby project, but I cannot even remember what model it is. Could anyone help please to identify the model of this board? ...
0 votes
0 answers
17 views

How to use the new tools to do development on my ancient Fez Hydra

I dug out my ancient mainboard Fez Hydra and am trying to use to do my hobby project. Upon reading the instruction, I found that it requires to install VS 2013. I have VS 2019 installed already and I ...
1 vote
1 answer
48 views

Reading from sound sensors or gateways with high level languages

I was asked to implement a system for collecting data from a sound sensor. I have no idea where to start so I'm asking for some guidelines since IoT is completely new to me. The place where the data ...
3 votes
2 answers
825 views

ESP32 always high pins screwing analog measure

TL;DR When trying to use some pins of my ESP32 to read analog signals, it turns out those pins have a non-zero voltage, messing up the measurements. Why? I got myself an Olimex ESP32-POE-ISO (see ...
5 votes
1 answer
6k views

How do the AirPods communicate with the phone?

By reading the iFixit Teardown, one can realize that the AirPods use the W1 chip for wireless communications. Since both Airpods are wireless, there are questions still unanswered. Do both Airpods ...
0 votes
1 answer
57 views

Bluetooth Input Hub

I am wondering if anyone knows about some existing 'off the shelf" hardware options where some device could connect to this Bluetooth "Input Hub" where this hub can have inputs plugged into it and any ...
12 votes
2 answers
540 views

What are affordable solutions to air quality monitoring system?

I would like to measure the air quality related to road traffic in a city for an IoT application. The European Environmental Agency has defined quality indicators (good, bad, etc) according to the ...
0 votes
1 answer
53 views

Search for a device that uses a mobile sim and that acts on a relay by ringing the sim

I am looking for a device that has an internet connection via a mobile sim. It allows owners of enabled telephone numbers to switch a relay by ringing the device sim. The system will be used to allow ...
2 votes
1 answer
66 views

How to program my own smart home with raspberrypi 3? [closed]

Hello smart home enthousiasts, I'm a software engineering student and I want to start a new project for myself. I really like smart home stuff, but I don't want anything to do with google or amazon. ...
1 vote
0 answers
77 views

Seeking a board (STM32?) for Ada coding - are you experienced? [closed]

I am looking for a board, and think that I need someone to say that they have used it, rather than googling for it. In the immortal words of Jimi "are you experienced?" I would like to program in Ada,...