Questions tagged [sensors]

For questions about simple IoT devices that can only monitor the physical world and report these observations. Examples are devices that just monitor the state of your lights, radiator settings, power plugs, fans or door locks. If the device is able to change those settings use the tag [actuators] or a more specific one.

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2answers
61 views

Solution for Outdoor Geolocation

I am new to the Internet of Things space and would like to inquire if a solution exists / could be created for real-time geolocation of an intermittently mobile object (not an automobile)? The ...
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0answers
40 views

What are the sensors available to measure liquid levels?

What is the best sensor which can be integrated with esp32 and can be used to measure liquid level in a tank. I used HCSR04 and JSN but both of them were not good. Are there any other recommendations ...
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43 views

How to communicate with IoT gateway with C# [closed]

I'm a C# web developer and I just started handling an IoT project. My goal is to have this set up: PIR Sensors > IoT Gateway > Website (ASP.NET Web Application C#) For now, I have PIR sensors (BLE)...
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27 views

Which Pressure sensor in Netatmo weather station

I have been trying to figure out which barometric sensor that is being used in the Netatmo weather stations (netatmo.com/weather) to measure the atmospheric pressure. I have disassembled the indoor ...
2
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0answers
24 views

Intrusion alert system for rugged environments iot, sensors [closed]

We are developing an IoT based intrusion alert system for the agricultural field. The plan is to have vibration sensors installed over the fence on the periphery of agricultural land Required ...
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0answers
41 views

Suggestions for vehicle sensors for parking lots [closed]

I am looking for wireless vehicle sensors that could be laid out on the ground to detect if a parking spot is occupied or not. I am looking for sensors that can integrate with any of the IoT backends ...
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1answer
37 views

Remote sensor cloud connection

i'm just starting out in Arduino, IoT etc; I was given the Elgoo Uno R3 Arduino starter kit at the weekend and i've been trying to soak it up. I would like to make a number of sensors for my van, ...
2
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1answer
29 views

Is Google home an IoT Device or a WSN base station?

They say Google home is an IoT device but it has the ability to control other devices like lights, Air conditioners, etc. (in smart homes) which is more like a base station in the Wireless sensor ...
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3answers
82 views

Send sensor data over internet to a server [closed]

I had a project planned on monitoring sensors. I wanted to read sensor data over the internet. How should I proceed with the setup? Any help is appreciated.
2
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1answer
37 views

Cannot connect SensorTag cc2650 to IBM watson IoT platform using their android app

I have SensorTag cc2650 from Texas Instruments with their android app installed in my Phone. I am getting an exception while connecting IBM Watson IoT. It worked fine with quick-start service but ...
3
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1answer
32 views

Are immersion sensors typically waterproof?

This may sound dumb, but are flood sensors, like the one from Xiaomi typically completely waterproof? And if they are, would they work if installed vertically, facing with the side downwards, instead ...
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0answers
76 views

Open-Source Repositories that use IoT Sensor Data for Smart Contracts and Blockchain

In all honesty, I have only been reading blogs and papers about how IoT enabled Sensor data can be used with Blockchain along side with Smart Contracts for smart-industries, healthcare etc. but for a ...
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2answers
77 views

Custom sensor readings with Amazon Alexa

TLDR: I want to query Alexa for the current humidity sensor reading by asking: "What is the current humidity, Alexa?" The answer should be similar to: "The current humidity level is 56.7%" ...
4
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1answer
37 views

For my “switch on light with clap project ” will sound sensors detect other sounds other than a clap and switch on the light?

I am just a high school student who is trying to self-learn for my IoT home automation projects.Please excuse me if this question sound silly to you.This time I am working on this "clap to switch on ...
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1answer
52 views

How to implement out-of-home when developing an IOT device?

I have a Raspberry Pi that tells you through web sockets and a sensor the amount of electricity you are spending in real time. I created an iPhone app as a front-end that basically just paints the ...
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0answers
49 views

LoRaWAN remote sensor node platform

Which platform can you recommend for a LoRa/LoRaWAN remote sensor node, which fulfills the following criteria? Detects presence of people in 15-minute interval (e.g. with a RCWL-0516) Reports the ...
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0answers
50 views

Pushing Processed data from RFID + Sensors to a Platform

I have some sensor nodes (Bosch XDKs) that send information to an MQTT broker and an application reads the information and stores it into InfluxDB. Simultaneously, I have RFID readers that scan some ...
2
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1answer
169 views

Dumb sensor vs smart sensor

Everytime when i read about the "Internet of Things" it is suggested that devices are smart but when it comes to an implementation of an IoT ecosystem, it is not so clear to me anymore. So i need some ...
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0answers
41 views

Sensors for a Validation Research

I've been searching for wireless sensors that could track the following metrics: Location (GPS) Heart Rate Head Movement Length of Steps Skin Conductance Pavement location (relative location compared ...
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2answers
153 views

Is it possible to use a CO2 sensor to detect how many people are in a room?

I have MH-Z14 Carbon Dioxide sensor and have been using it to try and detect when a room may need some fresh air. But, I've also noticed that the sensor reading drastically increases when a human is ...
8
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3answers
97 views

Sensors under increased pressure

I am wondering how the DHT 22 (measures humidity and temperature) sensor would work under double or triple atmospheric pressure (rough calculations have been done but it will vary and the exact ...
1
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1answer
65 views

Would there be an IoT use cases where sensor and actuation are at two different locations [closed]

I am thinking of application that if there is fire or machine failure at remote location, then some action (like an alarm or emergency light) is taken at a different location. (Like a control or ...
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0answers
39 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 ...
2
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1answer
137 views

Adding Metadata within MQTT client in order to be available for querying in InfluxDB

Scenario I wish to deploy sensor nodes that publish sensor data to a central MQTT Broker and then send this information to InfluxDB. Requirements Adding metadata to the Sensor nodes whilst ...
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0answers
37 views

Read I²C Sensor via openHAB

I am using a voltage sensor which communicates over I²C, a Python script is handling all the communication and logic in a Raspberry Pi. Since I want to switch to openHAB I am wondering how to read ...
5
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1answer
255 views

Thingspeak: message limit, update limit and bulk updates

I am looking at ThingSpeak for logging sensor data. I would like to log three different variables at a frequency up one datapoint per second. This would be 86400 samples per day or 259200 values per ...
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0answers
135 views

Is a simple UDP messaging a good idea for IoT Sensor?

I am working with NB-IoT Modem - Quectel BC95 that will be used in a simple IoT sensor that will periodically (Once per hour) send measurements to our server. Because of the restriction in place by ...
4
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1answer
55 views

How to decide how to select an endpoint device

This question is intentionally rather open ended, and potentially opinion based, but it is intended to act as a catch-all for the questions on how to select a device for a sensor/endpoint. Any ...
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2answers
299 views

How rapidly should the data from IoT devices be sent to the cloud?

I am configuring a Sonar Distance sensor to send data to a cloud. But the problem for me now is: I do not know when to send the data to this cloud. As far as I know, I could send the data ...
5
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1answer
41 views

Some type of movement sensor

I was wondering is there's a sensor or some type of sensor that would detect itself if it's been moved, say if I put the sensor in one end of the table and move it to the other end it will detect that ...
6
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0answers
1k views

Make ADT Door Sensors work with Ring security system?

Is there a way to modify ADT's Window and/or thin Door sensors in some way to work as door sensors for Ring's Home Security System? I am transitioning from an ADT security system to Ring's, but am ...
3
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1answer
44 views

Possibility of integrating secure elements with sensor networks?

Assume we need to do a type of digital signature such as ECDSA with sensors used in sensor networks. So, is there a secure and possible approach to store the keys in these sensors? For example, is ...
8
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2answers
154 views

How can I use End-to-end encryption in sensors network?

I have been reading about XMPP and its extensions. One of them called (XEP-xxxx: Sensor-Over-XMPP) which is really interesting. I have read also about another XMPP extension which is OMEMO protocol ...
6
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1answer
93 views

Simulation tools for centralized, decentralized, or distributed wireless sensor network

I want to simulate the collision avoidance between different objects that use (IoT based) centralized, decentralized, or distributed wireless sensor network. What are free software available to ...
4
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0answers
42 views

Dashboard of historical data in iot_datasourse

I have historical data stored in an SQL database as date in the format (2017.10.27 12:00:25) and the corresponding temperature in the format (26.55). I am using the node iot_datasourse to show the ...
5
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0answers
85 views

Can an AS3539 Sensor be made to “just” report distance to lightning strikes?

I recently added an AS3539 Lightning Sensor to my IoT network, but found out that the sensor reports distance to the closest lightning strike over the last 10 minutes or so, no matter how far away a ...
2
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2answers
338 views

ESP8266 code using Python [closed]

I need to connect some sensors wireless using an ESP8266 which transfers data over my home Wi-Fi network from sensor to Raspberry Pi. Now, I was told on the Raspberry Pi Stack Exchange that when using ...
5
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1answer
89 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 ...
10
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2answers
411 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 ...
8
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2answers
230 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 ...
7
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2answers
274 views

Local and distant MQTT communication

In my project I have a set of sensors in a local network that should communicate with a Raspberry Pi 3 and then with a distant MQTT broker. Since I'm using ESP8266 for the sensor nodes I thought I ...
6
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2answers
87 views

DS18B20 Oscillating Rapidly

I have an IoT device in the field measuring temperature next to a wind machine. See this video for an explanation as to what a wind machine is—basically a big fan attached to an engine. Last night, ...
5
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2answers
146 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. ...
5
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0answers
95 views

What are the hubs for non-WiFi, DIY/open/hackable devices?

I would like to future-proof my home automation architecture Today, I have a very decentralized setup: an MQTT broker (Mosquitto) WiFi switches: two on-the-wire ones (Sonoff Basic) and one wall ...
15
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5answers
3k views

Which backend database is suitable for the IoT implementation

I have to provide the IoT service for my customer. MQTT, Kafka and Rest Services components will be used to ingest the data from the devices to the database. I need to do some analytics over the data ...
4
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1answer
252 views

MongoDB/Redis/CouchDB/Any Graph DB with S3 for IoT implementation

I have an IoT use-case (Should I use the MQTT protocol?) and decided to implement the SMACK architecture. I hope, Up and running the SMACK stack would be very much cost. Right now I am not expecting ...
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1answer
102 views

Polling multiple GPIOs

I am trying to pull a few bytes per second from a microchip board attached to a temperature sensor and a photodiode, using Windows 10 IoT on a Dragonboard 410c. It seems like there's either ...
11
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1answer
263 views

How to detect a presence (not motion) of anyone in a room?

I'd like to monitor a state of rooms in my apartment and turn off heating/cooling/lights when nobody is there. I see there is a bunch of PIR sensors on the market, however I don't understand why some ...
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0answers
157 views

Is there any scream detect sensor or scream recognition program?

I'm developing smart IoT product which will be placed on underground parking lot. Among the various feature, one require scream detection. I heard that there are several feature includes scream ...
4
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0answers
73 views

Where can I buy “all-in-one” sensors? [closed]

I am looking for all-in-one sensors that I can buy off the shelf. All-In-One means that they should have BLE and Battery in the device itself! I would be looking for Temperature, Humidity & ...