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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2
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2answers
31 views

How do I minimize cellular data usage for my embedded project?

I have an embedded project that is transferring data from the device to my server over a TLS cellular connection. The device needs to communicate with the server only when the sensor captures some ...
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1answer
17 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 ...
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1answer
32 views

How and how well can we use IoT to prevent the spread of Coronavirus by assuring essential precaustions outlined by healthcare experts?

The idea is to how and how well can we assure to prevent the spread of the disease. Here are the very basic precautionary steps to take in order to prevent the spread of Coronavirus for the general ...
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1answer
44 views

Any info on where to get a water sensor with wireless connection [closed]

Am currently working on my final year project and am in desperate help with a sensor I need a water sensor that can connect wirelessly to a database.
2
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1answer
42 views

Building bidirectional people counting sensor

I am trying to build a people tracking sensor for counting the traffic of a specific area (building or shopping street). I need to detect people coming in or out of a room, also if two people are ...
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0answers
28 views

Which conferences and journals are notably trusted in the area of wireless sensor networks?

I am trying to get into the field of security concerning wireless sensor networks and found several good books and papers. But still this research topic is filled with fraud publications on ...
2
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1answer
28 views

Motion detector system that can be flashed remotely

I want to build a motion detector that performs a similar service to security services, which notify me upon intrusion and provide video feed. The other main requirement is that I can update the ...
6
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2answers
75 views

Encrypting sensor data on Raspberry Pi?

I am sending sensor data between two Raspberry Pis via lora. I am using two Lora Radios and NOT using a LoraWan network like The Things Network. How should I encrypt my data? Are there any open source ...
2
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1answer
56 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. ...
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0answers
32 views

Read real time multiple sensor [closed]

In case you have multiple sensors (temperature, pressure, etc) up to 20 in a system with different electrical interfaces. What is the best way to read values simultaneously (at exact the same time ...
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1answer
71 views

How can I build a network of 5 smartphones that log accelerometer data into a computer?

I would like to build a network consisting of 5 smartphones (preferably Android, if it makes any difference) that log synchronized accelerometer data into a computer (like a data-logger). How can I ...
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1answer
40 views

how to network a receiver to a public server

My company use sensors on doors to track activity and access control on the doors for many sites throughout the UK. We need to log this activity by sending UDP packets from the sensor's receiver to ...
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0answers
60 views

Wanted: open source communicating, self contained, IoT source code firmware

this question could be borderline off-topic here, but I dare asking it still here for academic purposes. If it is off-topic, send me an email to basile@starynkevitch.net mentioning the URL of this ...
2
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1answer
29 views

What Is This IoT Project from Maker Faire Detroit? Connected Aloe?

At 2:27 in this teaser/promo video for Maker Faire Detroit, there's a brief clip of an aloe plant with some IoT type stuff. Presumably this is from either Maker Faire Detroit 2018, or a previous year. ...
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0answers
66 views

How to connect Raspberry PI 3 Model B to BLE Motion Sensor

I'm trying to connect my PIR motion sensor using gatttool and is giving me this error: pi@raspberrypi:~ $ sudo gatttool -t random -b B8:7C6F:1A:D8:24 -I [B8:7C6F:1A:D8:24][LE]> connect Attempting ...
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2answers
97 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
59 views

What are the sensors available to measure liquid levels? [closed]

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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0answers
103 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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40 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
32 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
45 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 ...
1
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1answer
48 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
38 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
371 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
96 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
37 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
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0answers
94 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
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2answers
805 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
45 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 ...
2
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1answer
84 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
58 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
68 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
420 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 ...
8
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1answer
75 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
206 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
102 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
66 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
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0answers
40 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
292 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 ...
5
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2answers
60 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
572 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
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0answers
151 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
61 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
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2answers
387 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
43 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
2k 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
46 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
217 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
99 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
46 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 ...