Internet of Things Stack Exchange
Internet of Things Stack Exchange

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Provisioning "things" on AWS IoT without certificates confusion

I am new to AWS IoT. I wish to use AWS IoT's feature called JITP (Just In Time Provisioning) to provision my gateways automatically. I am using BeagleBone boards as device gateways. I followed the steps by generating and registering the CA…
Engineer999
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Timer 300-W Smart Dimmer Outlet

I have a 300-watt floor lamp in my bedroom with a built-in dimmer. Living in the northern hemisphere, mornings are darker now, and I'm having a harder time waking up in the morning. I'd like to have a system where my floor lamp will turn on…
Brent
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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 that sensor, basically code a binding, without the…
Daniel D.
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How to trigger on solar noon in Home Assistant?

The sun component has sunset and sunrise events, but I would like to trigger on solar noon. This page tells me I can use the elevation for this. What number should I enter to achieve what I want?
August Janse
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Options for cheap and "open" wireless thermometer/humidity sensors

I'm starting to explore IoT in my home, the first step being to connect a raspberry pi 3 B+ to a DHT22 temp/humidity, record DHT readings in a database which I then surf via a node server running on the pi. All good. I got help from e.g.:…
minisaurus
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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 continuously every second. But in my case, the sensor does…
Truong Nguyen
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SBC similar to Banana/Raspberry Pi with USB comms

I’m looking forward to develop a handheld device that could communicate with PCs over WiFi network, Bluetooth and USB. I have looked at the forums about Rpi, and they say it does not support Usb communication with PC since they are both masters. So…
alex_z
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Can't connect IKEA TRÅDFRI driver to TRÅDFRI app

I have a 30W TRÅDFRI driver for the kitchen top lights, and I want to control them with a TRÅDFRI dimmer. That works like a charm. What doesn't work, is to add the TRÅDFRI driver to the TRÅDFRI app so I could use my smartphone to control the kitchen…
ShutterFreak
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Understanding ZigBee Light Link protocol

I'm playing around with my Philips Hue and an AVR Raven but the packets displayed by Wireshark are not matching with the specification of Light Link v1. For example on scanning for lights, the device should send scan requests (I think 60-65 are…
pythonimus
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Custom responses — Google Home

I have a a web server up that listens on a particular URL and returns a unique response based upon a bunch of criteria. For example (fake domain): myserver.com/cgi-bin/nextslot returns Hello, the next slot is at 2:00pm The response can be JSON or…
Damon Brodie
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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 it has been moved? I have seen some sensors that…
rockStar
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How can I view the website from the Maker Pro IoT Smoke Alarm?

https://maker.pro/arduino/projects/iot-smoke-alarm-arduino-esp8266-gas-sensor I'm a layman who wants to do this. Have completed it as shown in the link. But I don't know how to see the website and not make red LED glow instead of green when I bring…
user7305
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How relevant is the energy consumption of IoT and RF home devices?

I am designing and building my own house. I am very interested in automatizing several devices as blinders and lights. In general, I am thinking in using Zigbee (Xiaomi and Aqara), RF and IR devices. The latter two will be controlled by a RF + IR…
riqui
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Are there MQTT servers which allow for message log and retained messages TTL?

For my home setup, I use mosquitto as the MQTT broker. It works fine, delivering typical MQTT services. There are two functionalities which are missing: log all messages which were sent to the broker (with a timestamp) expire retained messages…
WoJ
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View the messages sent to the local Mosquitto server

How can I see the messages that are published to the Mosquitto broker which has been locally installed in Ubuntu? I have used Spring Integration and think it worked fine. I also tried commands in the Command Prompt after searching on the Internet…
sam
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