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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6
votes
1answer
72 views

Looking for direction to find a specific hardware

I am struggling finding a specific hardware, here is what I need : Bluetooth Low Energy Beacon good range Button on it to send a signal to my iOS/Android app Possibility to switch off/on (not ...
6
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3answers
824 views

Drawing parallels between building an IoT system and building a PC? [closed]

I am reviewing potential candidates for IoT position. The position in a industrial factory setting requires the candidate to contribute to the 4 stages of an IoT infrastructure as defined in the ...
1
vote
0answers
119 views

Are there anybody use Android based 4G module [closed]

Are there anybody who used android based 4G module, I have found out a 4G module based on Android system and support 2nd develop, which means we can use the application processor on there module and ...
5
votes
1answer
4k 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 ...
3
votes
2answers
133 views

What are the boot requirements for an IoT device for 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 ...
6
votes
1answer
783 views

Controlling IoT device through a captive portal/web app over Wi-Fi & 4G/LTE simultaneously

Yeah - mostly some mad scientist stuff here. I have an IoT project I'm working on where each device must be independently connected to each users phone and not connected to any central WiFi network. ...
6
votes
5answers
560 views

Looking for a relay that can be controlled from .net web application (via TCP/IP)

As part of one new requirement for web application I am maintaining, we need to send a signal to a device in a factory when certain conditions are met in the application. Sending a signal is simply ...
10
votes
3answers
723 views

Power reduction for Raspberry Pi GPS/GSM tracker

I've recently built a fully functional IoT GPS/GSM tracker with a Pi Zero for a college project and now that it's finished and done with, I would like to minimize the current draw of the entire system ...
25
votes
8answers
5k views

As a Computer Science student, how can I develop skills for an IoT job outside of formal education?

In order to do well in a Computer Science related field, a college student has to do much more than just getting a degree—they must go above and beyond to be competitive with others in the field. As ...
1
vote
2answers
148 views

How to check usb connectivity? [closed]

I want to check if UART usb is connected to PC or not from my embedded program. Is there any indication line I can get in usb to connect to interrupt pin to detect from.embedded setup? From PC side I ...
7
votes
2answers
4k 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 ...
1
vote
2answers
176 views

Can I run Unity AR on a single board computer instead of a smartphone? [closed]

Unity AR targets to Android and iOS. Are there single board devices that will run the custom apps created as if the device was a cellphone? The device does not have to make calls, just run the ...
13
votes
1answer
980 views

How does an Azure IoT Hub interact with Embedded/IoT devices?

I am working on the Azure IoT platform, and I understand how devices send data to the IoT hub (if I am not wrong, It is just web service call or something similar to that). But I wonder how the IoT ...
2
votes
1answer
662 views

How to start IoT development to send commands from IoT Hub to Device

I'm a .Net developer recently started working on WindowsAzure IoT, but my role is just creating web API's to provide data to client (Mobile App) sent by IoT devices. I want to send commands to ...
6
votes
2answers
145 views

Which open source IoT board would be appropriate for a surveillance tool?

In the sea of IoT boards I would like to ask some advice regarding buying a board. Should be fast and compact (not Arduino) Open source hardware Should have Wi-Fi on board Should not have Ethernet ...
12
votes
1answer
362 views

Can I implement a (weak) entropy source in FPGA?

I'm working with an IoT platform in FPGA for evaluation and prototyping. I need to provide support for TLS, and for that I need an entropy source. I understand that true random noise sources are ...
20
votes
8answers
8k views

Cheap IoT microcontroller with PoE

Can anyone recommend a simple micro-controller with some I/O (<8) that can be powered using PoE, something cheap like Raspberri Pi Zero. The requirements are: Support PoE integrated. No power ...
7
votes
1answer
143 views

How can I design a simple Internet-connected controller for a sensor/heater?

I am in the process of creating a simple and cheap Wi-Fi PCB design that can send and receive messages to an app (through a cloud of course). I intend to attach this PCB to a fish tank temperature ...
6
votes
1answer
344 views

Availability of Narrow band IoT modules or chipsets

The Narrow-Band IoT radio protocol seems to have been around for a few years, but I'm struggling to identify any manufacturers of devices that are actually available to buy (either from traditional ...
10
votes
4answers
2k views

How does an experienced developer get started with IoT

I'm an experienced developer using variety of technologies as well as real time. I want to learn how to develop for a device which is not a computer, tablet, or any of the familiar devices everybody ...
8
votes
2answers
2k views

Receiving “ERROR” message from SIM800C module

Most of the commands I send to SIM800C module returns ERROR message to me. For example: If I sent AT+CSQ, it returns an expected response. One of the basics commands that doesn't worked for me is ...
6
votes
1answer
178 views

IoT for industrial warehouse management

Currently, I am using RFID technology for my warehouse management. My warehouse spans across 4 acres, I need to deploy so many RFID antennas and RFID readers to constantly scan the area for goods ...
11
votes
4answers
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 ...
18
votes
2answers
2k 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 ...
10
votes
1answer
495 views

How can I detect Alexa's current state or change its current state with an external device?

I want to have custom wake-word for Alexa so I want to interface this Amazon Echo with an external device. I am wondering if it is possible to create a proxy device that would wake up Alexa if I give ...
7
votes
2answers
684 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 (...
8
votes
3answers
2k views

KNX/IP gateways with support for KNX Web Services

Introduction KNX is a standardized, OSI-based network communications protocol for building automation. It is the successor to, and convergence of, 3 previous standards: EHS, BatiBUS and EIB. KNX is ...
18
votes
4answers
829 views

Battery backup for small IoT devices?

I'm making a number of small devices such as temperature sensors, RF433 transmitter and receiver (for controlling and receiving devices => MQTT) mostly using EPS8266. They work fine, and are USB ...
22
votes
3answers
928 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 ...
16
votes
1answer
263 views

Is there a way to turn on large numbers of IoT devices remotely?

I have a lot of IoT devices that I am currently working on (read playing with). One of my biggest headaches is turning on the ones I need without climbing under my desk and plugging in a lot of wires. ...
11
votes
1answer
251 views

Reusing / recycling a Petzi Treat Camera?

A few years ago I helped crowdfund a Petzi Treat Camera to feed my pet. Due to a broadcast pushed firmware update that I missed, it was rendered unusable. Thankfully, they did however send me a ...
23
votes
3answers
756 views

How can I properly test my device's PCB antenna?

I'm in the middle of testing a Z-Wave device I created with a PCB antenna. I want to make sure that the antenna has a good range and the signal strength generated is strong enough and comparable to ...

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