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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.

4
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1answer
29 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 ...
2
votes
0answers
69 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 ...
2
votes
1answer
39 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
votes
1answer
32 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 ...
1
vote
1answer
49 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 ...
1
vote
0answers
43 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 ...
0
votes
0answers
33 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
votes
1answer
119 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 ...
7
votes
0answers
36 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 ...
10
votes
2answers
149 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
votes
3answers
96 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
vote
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 ...
2
votes
0answers
38 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
102 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 ...
4
votes
0answers
36 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
votes
1answer
149 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 ...
6
votes
0answers
104 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 ...
5
votes
1answer
53 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 ...
5
votes
2answers
234 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 ...
6
votes
1answer
40 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
votes
0answers
868 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
votes
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
votes
2answers
137 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 ...
5
votes
1answer
89 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
votes
0answers
39 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
votes
0answers
75 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
votes
2answers
281 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
votes
1answer
88 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
votes
2answers
407 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 ...
9
votes
2answers
197 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
votes
2answers
249 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
votes
2answers
83 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
votes
2answers
139 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
votes
0answers
88 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 ...
12
votes
3answers
2k 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
votes
1answer
232 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 ...
1
vote
1answer
100 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 ...
12
votes
1answer
204 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 ...
1
vote
0answers
145 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
votes
0answers
68 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 & ...
7
votes
2answers
324 views

Lutron switch - turn off lights when nobody is in the room?

I have a room where the lights are controlled by a Lutron Caseta switch connected to a Lutron SmartBridge and Amazon Alexa. UPDATE: I don't require the use of Alexa in the solution, I'm just saying I ...
7
votes
1answer
136 views

NC-200 Park Sensor for vehicle detection

There's this module called NC-200 Park Sensor and there's barely any documents or videos about it. The AliExpress link is here. I wanted to know if anybody has worked with this thing before. I'm kind ...
5
votes
1answer
87 views

Modernise old door opening office system

Is there a way to relatively easily modernise an old door opening system in the office (like on the image) and make it work with IoT? Build an app to open the door (in the first place) and if possible ...
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 ...
10
votes
3answers
2k views

A low cost alternative option for ZigBee stack in mesh network of sensors

We're in the step of making design decision for a wireless mesh network of individual sensors which is going to be low cost. At first research I decided to use MQTT for application layer and global ...
2
votes
0answers
168 views

Standalone accelerometers to track the movement of bow limbs [closed]

I'd like to track the movement of my bow limbs. I think I can install a pair of accelerometers and analyze the logs to see what happens upon full draw and release. Each accelerometer should be small ...
9
votes
2answers
1k views

What are some good tools for graphing sensor values?

I'm using Home Assistant for my home automation, it has some basic graphing capabilities but only for the last 24 hours. I'd like to create graphs both with fine granularity and over long periods of ...
8
votes
1answer
191 views

UK m590e, Use GSM,GSM compact or UTRAN? (AT+COPS)

I am based in the UK. I am using an M590e module for a remote weather station. Which parameter should I use for the AT+COPS command? GSM, GSM compact or UTRAN? Which are available in the UK? Which ...
-4
votes
1answer
53 views

Acquisition of data from non automated old machinery in IIOT [closed]

Could you tell me how to get the data from the non automated old machinery using Industrial Internet of Things?
7
votes
2answers
143 views

Which UK smart energy meters can be used as IoT sensors?

I want to know which Smart energy meters from UK suppliers can or cannot be used in IoT home-automation environment. Mainly, if I can add them as sensors in my home networks (Zigbee, Z-Wave, Wi-Fi, BT)...