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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.

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Train cats not to kill wild birds [closed]

Domestic cats kill a lot of wild birds. It would be good to make the hunting of birds unpleasant for cats. Since this is supposed to be a question, I'll phrase it this way: would someone consider ...
user184411's user avatar
1 vote
0 answers
39 views

Matter motion sensor for Google home household?

I have several lutron caseta light switches and Google homes. I want to add some motion sensors. I have a lutron sensor that seems to work but I want something that integrates with Google home so I ...
rsp's user avatar
  • 111
0 votes
1 answer
83 views

Track a tennis ball moving at high speed

I am trying to track a tennis ball moving at high speed in a lawn tennis game. I am unable to figure out which approach would be best. I need to perform these detection on a jetson nano(or jetson nano ...
Pratham's user avatar
0 votes
1 answer
53 views

Temperature Sensor IoT device that support cloud integration

I am looking for an IoT temperature sensor that does the following: Able to Communicate with cloud platform (aws, azure etc) Does not require a lot of programming. The device should be preconfigured. ...
Kshitij Kumar's user avatar
1 vote
1 answer
51 views

HomeAssistant: Companion App sensors won't trigger automation

I use the latest version of app (2024.1.5-full) and HA (2024.3.0) and want to use the next alarm sensor as a trigger for an automation in HA. So I Enabled that sensor on the phone (it grabs the ...
Xenonite's user avatar
  • 149
1 vote
0 answers
77 views

An alternative to high-cost NPK sensors

I want to design an IoT based fertilizer recommendation system in which using temperature, moisture, humidity and NPK sensors, you can obtain the data on soil nutrients and you will get the exact ...
remotestbeach's user avatar
1 vote
2 answers
162 views

Car fuel level sensor remotely monitoring

Car fuel level sensor Car fuel level monitoring is implemented and viewed on the dashboard with assistance of fuel level sensor inside the Automobile. Is it possible to remotely monitor a running ...
Prashant Akerkar's user avatar
1 vote
3 answers
80 views

Using Tuya water leak sensors to control water level

Is it possible to use a pair of Tuya water leak detectors & two irrigation timers (TM1 - out & TM2- in) to create a setup to auto-cycle aquarium water? My idea is to have the two leak sensors ...
miCRoSCoPiC_eaRthLinG's user avatar
1 vote
0 answers
43 views

What simulator is appropriate for modeling intrusion detection and prevention in large-scale static wireless sensor networks and simulated attacks?

When it comes to simulating intrusion detection and prevention in large-scale static WSNs, the choice of simulator is crucial. These networks, comprising stationary sensors (independent low-power ...
baxbear's user avatar
  • 121
1 vote
1 answer
68 views

Calibrating MPU6050 sensor

So I'm using an MPU6050 module for detecting the impacts on a board to which it is attached, in-order to detect hits on the board, using the accelerometer sensors. The module is placed vertically(z-...
fractal397's user avatar
0 votes
0 answers
54 views

Sending data to server every second with http-request

I'm sending few bytes of sensor data to server with http.POST every minute and it's working. Next I want to send 20 bytes every second with http.POST. I was told server would take that as an attack ...
tipo1000's user avatar
0 votes
0 answers
96 views

How to use DIY keyboard connected to spi (gpio) of single board computer

I want to build a diy keyboard which connect to the spi interface of the gpio header of the orange pi 5 (ubuntu/linux). So far I have some sketches of the keyboard, the schematic is in progress. The ...
keyborder's user avatar
1 vote
0 answers
76 views

Sniffing a LIN Network in LAB

I am posed with a situation where I have a LIN sensor but without any documentation or literature on the same. I am new to LIN protocol and understand that it is a request and response protocol. Now I ...
Subbu's user avatar
  • 441
0 votes
1 answer
24 views

Aeotec Trisensor undefined behavior

I've been using a few of the device of the same model for several months. While they've been working great, one of them recently started showing strange behavior that I cannot find defined in the user ...
IsaacS's user avatar
  • 121
1 vote
0 answers
45 views

UDP communication with XBee Wi-Fi S6B

I am an absolute newbie when coming to using these modules. I am trying to setup a basic UDP connection between my XBee S6B (UDP Client) to my computer (UDP Server). I have added my codes below. The ...
Ayush Das's user avatar
0 votes
2 answers
109 views

Sending sensor's binary signal to the cloud through a wireless settings

I’m relatively new to iot and I'm looking for ways to send a binary signal from a tiny sensor (size of a coin) to the cloud through a wireless setting.  Basically, sensors would emit a simple binary ...
Alex Martin's user avatar
0 votes
1 answer
61 views

How to count people in a given area without using phone traffic data?

DESCRIPTION: I am working on a project to find out how many people are in a given region. Basically I want to make a heatmap showing how people move in a specific day throughout 24h. In order to do so,...
Federico Gentile's user avatar
2 votes
2 answers
52 views

Detect bad air quality because of burned firewood

In my neighbourhood people burn a lot of firewood. I always deactivate my automatic ventilation when I smell it, but I would like to have something better. Are there sensors to detect this?
J Fabian Meier's user avatar
0 votes
1 answer
340 views

How to create Alexa behavior on Echo Dot that is an alarm sound (or text-to-speech) that continues until dismissed

I bought a YoLink water sensor (leak detector). By following these steps, I was able to link it to my Alexa app and Echo Dot. Now, when water touches the sensor, Alexa sends a notification to my phone ...
Ryan's user avatar
  • 129
0 votes
1 answer
557 views

Which output should be preferred - RS485 OR 4-20ma OR 0-5V OR 0-10V?

I am building a Duct Air velocity monitoring system. The sensor has these four different output types - RS485 4-20ma 0-5V 0-10V I studied about RS 485 and I think the standard was used for Long ...
Lakshay Dulani's user avatar
0 votes
2 answers
37 views

Sensor suggestions for accurate drone speed testing

I'm trying to build a system that would allow me to monitor a moving object in real time, to estimate its average speed over a fixed distance. The issue is that the object is a drone, it can't be ...
Rami's user avatar
  • 1
2 votes
0 answers
35 views

How to account for variation in sensors across multiple devices?

I am working on installing 5 sensors around a workshop to measure the mass of different storage boxes. I wish to use the same codebase to record and log all the data from each sensor setup. One issue ...
conomor's user avatar
  • 21
1 vote
1 answer
306 views

How to wire multiple DS18B20 temperature sensors?

I want to wire up a few DS18B20 sensors to measure various points across a span of about 10 meters. (I intend to hook this up to an ESP8266 and use Tasmota, but I think that's not really relevant to ...
davidgo's user avatar
  • 173
1 vote
0 answers
57 views

Combining the detection of smoke+motion+temperature+light in a single wired device

I'm working on a prototype home automation for our to-be renovated off-grid farmhouse. Much of the house will run directly on 24V DC (except the power devices like microwave etc).The whole setup will ...
Christiaan Westerbeek's user avatar
1 vote
1 answer
88 views

Best memory choice for my sensor

I'm a software developer and trodding in murky waters here so please do forgive my lack of knowledge. I've been developing a sensor with the nRF9160DK and some accelerometers. I need to continuously ...
nwretborn's user avatar
2 votes
1 answer
77 views

Does iPhone 11 device contain multiple UWB receivers?

Does iPhone 11 device contain multiple UWB receivers? Angle of Arrival (AoA) is often required for many applications for UWB enabled devices. I wonder if modern UWB enabled devices i.e. iPhone 11 ...
Sazzad Hissain Khan's user avatar
0 votes
2 answers
295 views

How to detect the relative direction of two mobile devices?

How to detect the relative direction of two mobile devices? When a mobile device (i.e. a modern smartphone) is taken near to a second mobile device, it is possible to detect inter-device proximity ...
Sazzad Hissain Khan's user avatar
1 vote
0 answers
130 views

Is there a device to detect roof leaks?

I just had my roof redone and solar panels installed on the roof. As we're getting into the rainy season I've been concerned about the potential for leaks in my roof with all the new hardware. Is ...
tbm0115's user avatar
  • 1,917
1 vote
0 answers
38 views

Electric Gate Project further development

Newbie here, hoping to extend my control of electric gate system. Here is where I am at, and will then go on to explain where I want this to get to. My gate system is an old "out of the box" ...
Gate-Keeper's user avatar
0 votes
0 answers
201 views

Temperature sensor MLX90614 read object temperature above 300°C

I want to make sure the sensor read normally but when i run it to read the object temperature, the result is 382.19°C. I have search for tutorials, and also the error but i couldn't find it except for ...
Abraham's user avatar
0 votes
1 answer
150 views

Battery powered MCU with accelerometers and LTE-COMS, looking for products

I've made a question previously but I did not give enough background info so here it goes: I have been developing a prototype for measuring ground vibrations using three MEMS-accelerometers together ...
nwretborn's user avatar
0 votes
2 answers
70 views

Guide to connecting generic peripherals

I have some development boards like the FiPy with Expansion Board, mainly to experiment with programming on the processor, but it would be interesting to connect some peripherals (by wire, not ...
Byron Hawkins's user avatar
1 vote
1 answer
109 views

4-Channel 16-Bit ADC for Raspberry Pi (ADS1115) - Can I connect two analog sensors?

I have a RP4 and thinking about buying EC and PH sensors from Grove. I've learned that RP4 doesn't have an analog input so I'm thinking about connecting it through ADS1115 from Grove. I'm not sure ...
Marcel Kopera's user avatar
2 votes
1 answer
395 views

How can I identify what kind of IoT device is in my network?

I am trying to build a system in which IoT devices can connect and are classified without the need for manual checks by the system administrator. In this system, IoT devices will send data, and on the ...
degr8sid's user avatar
3 votes
0 answers
46 views

FIWARE: NGSI-compatible sensors for IoT data gathering [closed]

I am preparing to conduct a research for IoT, collecting environmental data from different sources (temperature, humidity, light, air quality, GPS, etc...). What could the best set of tools or ...
super_ask's user avatar
  • 131
2 votes
0 answers
202 views

Are micron feature-size LIDAR sensors available?

I want to scan various writing materials such as card, cloth, various grades and qualities of paper, wood, even hemp-based or other writing surfaces. The reason is I wish to write a GPU-accelerated ...
Thomas Browne's user avatar
0 votes
0 answers
80 views

What Kinda of Trigger to Use for a System with Two Raspberry-Pi's

I have a system like the image shows. Now instead of it being connected with an Ethernet cable, it is going to be wireless. The SBC's represent Raspberry Pi's. SBC0 reads the data all the time and is ...
zellez11's user avatar
  • 101
3 votes
1 answer
55 views

Where to find Desktop Occupancy Sensors without attached service

I was curious and wanted to see, what it might take to build your own desk availability solution. It seems the way to go is to use some kind of lowband pir sensors, but my Google-fu is rather poor. I ...
Verakso's user avatar
  • 131
1 vote
2 answers
98 views

Is MQTT a good choice for my application?

For a university project I need to have a couple of "things" that collect data and which we will then be able to view and manipulate. At the moment each of the devices will consist of a few ...
Joel's user avatar
  • 21
0 votes
1 answer
198 views

Is there a Hub that can receive a 915Mhz signal and report on it?

I'm looking for a device that can detect (and report to my raspberry pi) the presence of a signal from my Switcheroo: Switcheroo - Sync Lights with No App, WiFi, Bluetooth, or Remote Control | Change ...
hepcat72's user avatar
  • 175
3 votes
1 answer
91 views

How to collect data from AM 2302 temperature sensors over long wires?

I am trying to monitor the grain temperature in 4 roughly 25ft grain bins. I currently am monitoring temperature in one 15ft bin with the AM 2302 sensor, and it appears to be working. I just made a ...
Kody Rogers's user avatar
1 vote
1 answer
70 views

What types of proximity sensors would fit this bicycle application?

I'm looking into proximity sensors for bicycle attachments. The idea is to detect when a car passes close by to a rider. What are some types of proximity sensors that would be: Cheap Range up to 2 ...
Alexander Soare's user avatar
3 votes
1 answer
102 views

Wheel skid detection

I am working on a project which sensed four speed by using hall sensor attached to wheel by using raspberry pi. I have wrote program for that only issue with that it gives fairly good results when ...
Rakesh Choukse's user avatar
3 votes
1 answer
441 views

Detecting static human? How? Which Sensor?

I am new to this community and I apologize for my bad English. I am interested in Home automation I am working on my new project. Where the requirement is to use a sensor for Automatic Light on/off ...
Amit singh's user avatar
0 votes
0 answers
157 views

Tracking speed and direction of golf ball

I'm working on a prototype for a cheap launch monitor as a cheap alternative to the expensive ones on the market atm. Question: I'm looking for a sensor or sensors that can track the following High-...
Simon Dragsbæk's user avatar
1 vote
1 answer
104 views

ds18b20 reading oscillating [closed]

I have two ds18b20 connected in star topology (3m cable) to a wemos d1 mini inside a cold chamber and sometimes the temperatures are like following a sinewave. Any idea where that might come from ? ...
bnjroos's user avatar
  • 11
4 votes
2 answers
137 views

Decoupling data fetching from processing and publishing

I am working on a project that involves raspberry pi and the accelerometer sensor ADXL355. The raspberry's responsibility is to fetch the data from the sensor, filter only useful data and publish it ...
Riccardo's user avatar
1 vote
0 answers
69 views

mail in box detector

I would like to monitor my physical mailbox so I can know when something is inserted in it. The reason is this was an abandonned mailbox for years so people are used to put the junk mails in it (...
Maxime's user avatar
  • 111
3 votes
0 answers
33 views

Simple two-sensor digital thermometer with an alert when the temperatures match?

Where I live, it gets hot in the summer (but usually not so hot that I need AC on), but the nights usually cool down to a beautifully cool temperature. I like to open windows when it gets cooler ...
Sandwich's user avatar
  • 131
1 vote
0 answers
46 views

Ambient Light Sensor to monitor light levels in buildings for warranty post LED upgrade

We are a lighting service contractor that installs and maintains lighting systems and controls. I would like to be able to offer a system that can monitor light levels using a proprietary web portal ...
Fred Berg's user avatar