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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.

3
votes
3answers
69 views

DIY smart button to trigger phone app

I am planning on making a button that is when pressed sets an alarm on my phone. I am planning on making an app that is creating the actual alarm, the app just have to be triggered by the hardware ...
2
votes
0answers
37 views

out-of-the-box sensor nodes ready for deployment [closed]

I am on the lookout for sensor-nodes that do not require any DIY or sensor interfacing. Purpose This is because, at times one might just want to setup an IoT Network without having to program or ...
3
votes
1answer
42 views

Is static IP needed if using VPN to connect to IoT devices?

I have an IoT solution that I need to connect to from remote. I don't have access to open ports nor set static IPs on-site where the IoT devices will be hosted so I was looking for other solutions. ...
8
votes
2answers
35 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 ...
4
votes
1answer
66 views

Entropy depletion in /dev/random on Beaglebone

I have a Beagleblone Black with an ARMv7 SoC. /proc/cpuinfo says the hardware is Generic AM33XX. It is running Debian and the 4.1.15-ti-rt-r40 kernel. I run a lot of stress tests as part of my ...
4
votes
0answers
47 views

How to use dedicated cryptochips

I have a chip that needs to send arbitrary data to a server that I do not control. We're using mbed TLS at the moment, however the binary is quite large. So, we introduced a dedicated cryptographic ...
3
votes
2answers
181 views

Choosing a microcontroller for IoT project

I'm currently working on an IoT project. The principle is to have a box that could connect to a phone over Bluetooth on some NFC contact. After the phone and the box will communicate messages over ...
1
vote
1answer
74 views

Sonoff basic- GPIO’s

As far as I found documented- there are GPIOS 0, 12, 13, 14 on a basic Sonoff. Does anyone know if Tx/Rx are free to use after uploading my code, as GPIO’s ?
1
vote
0answers
124 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 ...
8
votes
0answers
344 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 ...
5
votes
1answer
87 views

Can environmental polluting gas sensors detect emissions of a low speed passing vehicle? [closed]

I am thinking to develop a remote-sensing applications for vehicle pollutions. In such cases generally expensive optical IR and UV sensors are used because more precise. On the contrary gas sensors ...
6
votes
2answers
61 views

Zigbee controlled signal routing?

I'm thinking of a possible way to allow Hue Bridge to command simple signal routing. I find myself rewiring my audio setup a lot and was about to just make a simple passive signal chooser dial box, ...
7
votes
1answer
162 views

Hacking a Google Home device to put a “hard switch” on its microphone

It's my understanding that Google Home devices all have a soft switch for their microphone; i.e. no physical circuit is broken when you turn it "off". Is it particularly difficult to open it up and ...
7
votes
1answer
104 views

Cheap PoE board with TCP/IP support

I have a small IoT project where I want a network enabled electrical relay. I do not need full network plug nor linux on it. It just should be small and cheap. I feel smart enough to write a small ...
3
votes
3answers
272 views

List of BLE hardware devices & what BLE services that they support

I'm looking a simple reference list that would shows me the supported BLE Services on each devices - for example; MIO Heart Rate Global -> (Heart Rate 0x180D) Archon Wireless Bike Meter -> (Cycling ...
4
votes
0answers
55 views

Devices wth Support for BLE Services 'Location and Speed' and 'Heartrate'

I need a BLE test device that supports at least Location and Navigation (0x2A67) 1 Heart Rate (0x180D) and optionally Health Thermometer (0x1809) Can anyone recommend one? Edit: I'm not looking '...
10
votes
2answers
401 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 ...
10
votes
3answers
584 views

Why are Zigbee hardware modules so expensive?

The Zigbee hardware looks quite simple to produce1, why are they so expensive? For comparison I can get a 855 Mhz wireless module for 2-3€ but I can't find Zigbee modules under 15€. [1]
8
votes
2answers
159 views

What is difference between a mote and a microcontroller equipped with sensors and connectivity?

Reading some papers about IoT and Wireless Sensor Networks (WSN) I came across mote devices and have seen there are lots of them. I have understood that they are the leaves in an IoT system and that ...
3
votes
0answers
36 views

How to reset motes (Telosb) at same time?

I need to start the motes to let them run at the same time, then monitor their behavior by their serial output, the only observer is my PC. Except to restart the mote by pressing the reset button on ...
5
votes
2answers
136 views

What is the best sensor for the measurement of Carbon-dioxide?

I need to measure the amount of carbon-dioxide in parts per million (ppm) within a closed environment. Currently, I am using a MQ-135 gas sensor which has some sort of concentration on Carbon-dioxide. ...
6
votes
0answers
88 views

InfluxDB in Single Node Embedded IoT Applications

According to the Documentation for InfluxDB v1.4, InfluxDB should be run on locally attached SSDs. Any other storage configuration will have lower performance characteristics and may not be able to ...
10
votes
1answer
92 views

Building an IoT product - what is the best way to avoid sharing in-house proprietary code?

I think it was hard for me to formulate the title. However, I can still explain my problem in more detail in here. I am designing an embedded product which consists of cloud service and embedded ...
1
vote
0answers
55 views

How to Make Custom-Length Jumper Wires [closed]

I am prototyping a Wi-Fi thermometer with an ESP8266 and an HT11, it works on the breadboard (!) and now I am designing a 3D printable cabinet. I would like the final thing to be completely dis-...
9
votes
1answer
93 views

Wio Node setup failed

To setup Wio Node, I installed the Wio Android app. The procedure doesn't end when I try to connect Wio Device like the image. After that I installed wio-cli and a driver for Mac. Then logged in. %...
9
votes
3answers
153 views

Smart deadbolt without motor — Read-only Access

I have some needs I'd like to ask my Google Home if my front door is locked. I don't want my Google Home to be able to unlock my front door. I don't even want my front door to be unlockable remotely. ...
-1
votes
2answers
405 views

Device for a motion tracker with BLE/Wi-Fi

I would like to know best alternatives to an Arduino or Raspberry Pi that has to satisfy the following specifications: Has BLE (Bluetooth low energy). Small size (https://www.kickstarter.com/projects/...
4
votes
2answers
117 views

Motion sensor to monitor the movement of people

I'm about to start an investigation about people movement after a surgery (walk basically). I would like to know where should I start to look for movement sensors (pedometer/accelerometer). This ...
14
votes
1answer
696 views

Are there any devices with open-source protocols over Wi-Fi?

I know how to program IoT using Arduino; but I want some ready made portable IoT devices that do not need any programming at device side. Just I want to buy and add these devices to the network (after ...
1
vote
0answers
56 views

Looking for a very low volume solenoid/water dripper [closed]

I need a way of dispensing a drop of water from an electronic signal, and am wondering if there are any devices which can do this cheaply. The volume doesn't need to be particularly precise, but I'm ...
-2
votes
2answers
618 views

Arduino Uno Vs Raspberry Pi [closed]

There are two common platforms which seem very common for IoT projects: Arduino Uno and Raspberry Pi. How would I decide which one would be most suitable for a specific project? I haven't got a ...
-2
votes
1answer
66 views

What is the difference between beacon products [closed]

What is the difference between different beacon products from different companies? I want to develop iBeacon products, but haven't decided yet which to use. It seems to me though they are quite ...
2
votes
0answers
194 views

Can I enable interrupts on GPIO16 of ESP8266?

Usually, the gpio16 is not used as gpio. But we can read the state or change the state by writing directly to the registers. WRITE_PERI_REG(PAD_XPD_DCDC_CONF, (READ_PERI_REG(PAD_XPD_DCDC_CONF) &...
9
votes
1answer
276 views

Would RPI 3 serve as IoT server with MQTT?

I answered to the below linked question and started to think, what are the hardware specs for running an IoT stack of for example MQTT over LoraWan? Would Raspberry PI 3 survive or not? I do not care ...
6
votes
1answer
68 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
votes
3answers
518 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
106 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 ...
3
votes
1answer
1k 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 ...
1
vote
2answers
122 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
573 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. ...
7
votes
5answers
339 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 ...
11
votes
3answers
520 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 ...
22
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
144 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
3k 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
127 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
745 views

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

I'm working on the Azure IoT platform and I understand how devices send data to the IoT hub (It's just web service call or something similar to that ... if I'm not wrong). But I wonder how the IoT ...
2
votes
1answer
463 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
134 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
225 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 ...