Internet of Things Stack Exchange
Internet of Things Stack Exchange

Most Popular

more tags
1500 questions
7
votes
1 answer

Do simple, wirelessly connected, but not battery powered switches exist?

I can’t find this despite lots of googling: I want to flip a switch in my living room and have every floor lamp turn on also. But I don’t need a remote, I don’t need internet connectivity, I don’t need schedules, and I definitely don’t want anything…
Jon Lauridsen
  • 173
  • 4
7
votes
1 answer

Cheap PoE board with TCP/IP support

I have a small IoT project where I want a network enabled electrical relay. I do not need full network plug nor linux on it. It just should be small and cheap. I feel smart enough to write a small http server in C/C++ (if required) to change the…
rekire
  • 303
  • 2
  • 11
7
votes
1 answer

How to make mosquitto to update topics in database not from memory?

As suggested in another question, we have added destination path as db and autosave_interval as 3000, but after few days memory is getting reducing automatically. Please let me know if there is any other solution to store in only db file.
bhuva nesh
  • 71
  • 2
7
votes
1 answer

Device authentication

How should I authenticate my device? I have an arduino yun, running an "daemon" on the OpenWRT side. The daemon reads commands from my message broker, executes them, and returns the value. Before communicating with the broker, the device should be…
user6334
7
votes
2 answers

SSH to Raspberry with Windows 10 IoT

I set up a Raspberry Pi 3b with Windows 10 IoT to try it out. In the past I had Linux running and I would just ssh connect to it. However when trying to ssh from powershell to the Windows 10 IoT it would fail with this error: Unable to negotiate…
findusl
  • 213
  • 1
  • 6
7
votes
1 answer

Rapid pairing of Bluetooth low energy interface

I'm looking at making a remote control for a custom IoT device using Bluetooth low energy (BLE) and I want the battery in the remote to last a very long time (primary battery, non rechargeable) so I don't want the remote to draw power (at all)…
Josh Wales
  • 93
  • 3
7
votes
3 answers

What would be the best way of authenticating users without password or username?

In our project, there are over 200 dummy users who are not very capable of using mobile technologies or computers comfortly. The project is essentially a MRP & Production Planning solution with machines connected to the server. In the original…
paroxit
  • 171
  • 1
7
votes
2 answers

Does an Internet of Things device need to directly connect to the Internet, or can they use alternative protocols like Bluetooth or ZigBee?

Can a device be considered an "IoT Device" if it uses protocols such as Bluetooth and ZigBee which are not directly connected to the internet? I've been reading about smart devices and connected devices that are not necessarily connected to the…
lp123
  • 71
  • 4
7
votes
2 answers

Are there any surveillance cameras/devices that are EU General Data Protection Regulation (GDPR) compliant?

I recently came across the EU General Data Protection Regulation (GDPR) meant for data privacy regulation. The final Version of GDPR was released December/2015. Any surveillance camera or devices that are known to be fully GDPR compliant? Are there…
sob
  • 2,610
  • 3
  • 17
  • 37
7
votes
2 answers

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 would make the esp nodes MQTT clients that…
Yazly
  • 71
  • 2
7
votes
2 answers

Is there an IoT device which has Bluetooth, GPS, a USB port and which can support a module for an alarm?

I'm looking for an IoT device which has Bluetooth, GPS, a USB port and which can support a module for an alarm. The end product is a wearable device therefore the device should be small. It should be something like an Arduino or a Raspberry Pi. The…
Muiz Uvais
  • 71
  • 3
7
votes
1 answer

Maximum Bluetooth LE devices near each other without interference

I am planning to put 100+ Ruuvitag beacons(Bluetooth LE tranmistters) in a ~120m2 area. There will be approximately 1 meter distance between devices. I need to get their advertisements at once using Raspberry Pi Zero(each beacon will send data every…
CuriousGuy
  • 171
  • 4
7
votes
1 answer

What is the working voltage range of a Sonoff Touch?

I would like to replace normal (mechanical) switches at home with Sonoff Touch ones, which I will be able to manage. Today I have this: and by adding the Sonoff Touch I will have that (P1 is the WiFi module, the whole dashed box is the Sonoff…
WoJ
  • 845
  • 1
  • 6
  • 14
7
votes
1 answer

Lo.Ra and Lo.RaWan: Why is a gateway needed?

As I was looking information regarding Lo.Ra and Lo.RaWAN over these…
Dimitrios Desyllas
  • 643
  • 1
  • 6
  • 13
7
votes
0 answers

Connect NodeMCU 0.9 to WPA2 Enterprise

Is there a way to connect to a NodeMCU 0.9 to WPA2 Enterprise like Eduroam? Now I'm using the Arduino IDE 1.8.5 with the library: ESP8266WiFi.h In this way I simply connect to a personal WPA2 with pre-shared key: #include const char*…
Timmy
  • 171
  • 3
1 2 3
…
99 100