Questions tagged [linux]
For questions relating the use of GNU/Linux based operating systems on IoT devices. If your question is about a general use or administration of Linux, consider whether it would be more appropriate at Unix & Linux Stack Exchange or Super User instead.
47
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Multi-admins/fabrics in Matter protocol
I am a newbie Matter protocol developer.
I am trying multi-admins/fabrics features. Could you please tell me how many ways to add a new admin into a node? Is the way to add without re-open the ...
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55
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How to advertize BLE custom data in Linux
I'm learning BLE and slightly got stuck with advertisements. I'm trying to advertise custom data representing an iBeacon with the commands below:
bluetoothctl
menu advertise
manufacturer 0x4C 0x00 ...
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Why a requested/sniffed BLE characteristic handle mismatch on Linux?
I'm learning BLE and trying to sniff packets just to understand how communication happens. I do this with Wireshark on Linux and sniff traffic between the Linux machine and a BLE-powered wristband.
I ...
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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 ...
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Orange Pi does not run from SDcard and get FF errors (but it works using integrated memory)
I recently purchased Orange Pi 2G-IoT. I bought a class 10 8gb sd card. According to the instructions of the oranges, I loaded Ubuntu onto the card. I connect to a PC via a CP2102 USB-UART converter. ...
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Can the relay be controlled over serial on the ESP8266 WI-FI?
I recently purchased an ESP8266 WI-FI which looks similar to this but is actually this one with the extra row of pins by the serial lines. I'm following along with the instructions on the first page ...
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Can a server/client pair be formed using TCP, IPv6 and 6LoWPAN
This question is asked to eventually allow developing a device driver that will take as input IPv6 data that has had 6LoWPAN header compression and data segmentation done on it. To help me understand ...
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940
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"Smart" switch keeps disconnecting from wi-fi network
I bought a smart switch to control my room lamp. It is a JWCOM Smart SA-01 model with very little to no documentation available on the internet (at least I wasn't able to find anything useful). The ...
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What to do with old 32 bit desktops [closed]
So I have two old 32-bit desktops from the early 2000s (I think one had XP and the other win 95). I have since updated them to now obsolete versions of Ubuntu. With everything now 64-bit and since ...
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Bare minimum infrastructure to keep a fleet of IoT devices running and ensure updates to OS and applications?
The number of currently available tools to run and maintain a fleet of IoT devices is staggering. To compare all is not feasible, however a list of the bare minimum required features to look for would ...
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How to use SSH server on a remote device and overcome routing issues
I am designing an embedded Linux device that acts as a gateway for sensor data. In some cases this device will use a back-haul that I don't control (e.g. customer supplied cell or cable modem). I ...
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Android or Linux + Electron for consumer facing GUI [closed]
I’m looking to build a consumer facing IoT product that involves a display. I have been debating whether to use Android or Linux + Electron for the app, which will be running kiosk style all the time. ...
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Python Paho MQTT 2.5 KB messages not sending for days, while 0.1 KB messages send fine
I've got powerful dual-core IoT gateways in the field with high-speed cellular modems and good internet connections, but they fail to send 2.5 KB MQTT messages to my AWS IoT message broker. My program ...
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Delayed IIO Sensor Readings
I am reading sensor data off of a Dell gateway, and noticing that the sensor data at iio:device2 seems to have a delay of ~1 second when reading using cat /sys/bus/iio/devices/iio:device2/in_temp_raw ...
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Is there any way to use scanner front panel to scan to linux?
I have a EPSON WF-3540 MFP. I want to use it to scan files directly to my NAS. As this device does not support scan to FTP or any other network share, I thought of using a lightweight linux device (e....
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256
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GSM enabled Linux device with USB link
I am looking for a device that runs Linux, has GSM connectivity (given a sim card) and has a USB port. I would like to turn a standard printer into a cloud printer by connecting it via USB to a device ...
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2
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63
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Cheap low specs board with network and audio
I'm looking for an IoT board with:
wifi, bluetooth and ethernet
audio input
at least 64Mb of RAM
at least 128Mb of flash memory
I'm trying to build an audio streamer box (for Sonos) which means a ...
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1
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63
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Smart band for generating custom vibrations
I am looking for a low-cost smart band (should be available in India) which can be controlled from Linux machine and or Android app to generate custom vibrations.
UPDATE
I see that there are many ...
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205
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Is the LinkIt 7688 Unofficially Unsupported?
I'm working on a device powered by the LinkIt Smart 7688 at the moment, and having some driver issues with building a new OpenWRT image from scratch for it. One of those issues is that the WiFi driver ...
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2
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256
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How to change dell edge gateway 3001 gpio pin to analog
In dell edge gateway how we can change the gpio pin from digital to analog? It has Ubuntu core as OS. It has 8 gpio pins only some of them I want to make digital and some of them analog. I have ...
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413
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PTP time sync over PPP (on serial) connection [closed]
I am running 2 ARM devices:
devA is connected to Ethernet network with all of its NICs
devB has the LCD, buttons and all this things for user interfacing, but no NIC and no RTC battery
Both ...
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2
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329
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Make Embedded Board NTP Server for Arduino boards in the subnet
I have an Embedded Board where the distribution on it is a custom Linux Distribution based on Yocto.
I have added ntp and via ntpd I will sync time with the common ntp pools either via UMTS 3G dongle ...
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4
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1
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487
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Entropy depletion in /dev/random on Beaglebone
I have a Beagleblone Black with an ARMv7 SoC. /proc/cpuinfo says the hardware is Generic AM33XX. It is running Debian and the 4.1.15-ti-rt-r40 kernel.
I run a lot of stress tests as part of my ...
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1
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mosquitto_sub: command not found
I'm using a raspberry pi image that has the mosquitto broker installed. To troubleshoot, instruction was to run:
pi@raspberrypi:/ $ mosquitto_sub -v -t "gateway/+/rx"
However that resulted in:
-...
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2
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595
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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 ...
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1
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431
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Using Raspberry Pi as USB bridge
I wanted to use my Raspberry Pi as USB bridge between multiple devices. We can assume that I want to connect my iPad which has POS software on it to my thermal printer. Most of star or Epson thermal ...
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Is there a Linux distro (à la Open/DD WRT) for smart speakers?
Smart speakers like Amazon Echo or Google Home are starting to become common. Is there a community effort to create an open source Linux firmware that can be run on them? I am thinking to something ...
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363
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Remote com (serial) connection through cellular IoT
We need to be able to make a com (serial) connection remotely off site from PLC type device.
We have completed a POC for sending some signals to Azure IoT utilizing a Siemens IoT2020 running linux ...
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Stream video on display from server using NanoPi [closed]
I am working on a project where I am required to stream some videos hosted at the server onto a display connected to my NanoPi M1 plus via a HDMI cable. I have not a lot of knowledge about it. Which ...
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Which Fleet Management Software exists for IoT devices? [closed]
I would like to ask what kind of fleet management software exists for IoT devices.
I know:
resin.io
mender.io
Teamviewer IoT (RPI only)
Are there more services like this?
Thank you very much
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Using aircrack-ng within VoCore [closed]
I wonder if I can use VoCore to capture and create/inject custom made packages.
I'm a big fan of IoT. But I don't do this for a living. I'm just learning stuff, on my own, in my spare time. My ...
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How to cross compile Paho-MQTT-C library for ARM? [closed]
How to for cross compiling Paho-MQTT C library for ARM platform.
Here are the steps I followed.
1) Downloaded library from [https://github.com/eclipse/paho.mqtt.embedded-c][here]
2) after download, ...
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61
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Job / Run Loop manager for embedded device?
I'm in process of creating an IoT Prototype which runs (currently) on ARM processor with Embedded Linux. I'm trying to use existing technologies as much as possible: for example MQTT for external ...
7
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1
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711
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Anyone know of a Wi-Fi light switch that works with Linux?
I'm looking for a single or dual Wi-Fi light switch that I can activate with Linux. It needs to fit a standard 2-gang switch box and/or include a trim plate that covers a 2-gang box. Anyone know of ...
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6
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1
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SSH into an Orange Pi connected to the internet via 2G GSM module
I wanted to SSH into my Orange Pi remotely. It will be connected to the Internet via a 2G GSM module. How should I go about it? Usually it's ssh username@ip address. The setup isn't implemented yet so ...
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3
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802.11 action frames send and receive in software
Is it possible to gain access to 802.11 action frames TX/RX from software? There's a proprietary protocol based on vendor-specific action frames called ESP-NOW for ESP8266 and ESP32 chips, and I'd ...
4
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1
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471
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Is it okay to use the 4 pin USB TTL cable instead of the recommended 6 pin USB TTL cable for Intel Galileo?
I have only the 4 pin USB TTL cable which has the Rx, Tx, Vcc and GND pins. The 6 pin includes the CTS and RTS pins also, and is specified for use with Intel Galileo board. My question is if I can ...
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How to setup mosquitto public broker in linux server?
I have linux server running with public ip. I have set up mosquitto broker with the following commands.
apt-get install mosquitto
apt-get install libmosquitto-dev
apt-get install mosquitto-clients
...
15
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4
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Is there a way to control my lights from my Linux desktop?
I have just started investigating smart lights.
I am interested in using some Wi-Fi sockets in some lamps in my office to automate the lights.
I am curious if there is a way to turn my lights on ...
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What will happen if I use Class 4 SD card, instead of recommended Class 10 for Intel Galileo?
I could not find any relevant information on this, sites just recommended class 10. I want to know if it is okay to use Class 4, 8 GB SD card, for making a bootable Linux drive for Intel Galileo, or ...
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Which tools/frameworks do you use to configure an array of SBCs
Use case:
I have a lot of Utilite2 single board computers to configure
On each device I installed Linaro (Ubuntu-based), booted from MicroSD card. Linaro is recommended OS for Utilite2
On each device ...
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3
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1
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Edison Ubilinux Flash Error "Cannot allocate memory of size 1610612736" [closed]
When flashing command prompt states restarting Edison. Then when it restarts the command prompt disappears quickly and nothing new is flashed on Edison board and message stating to wait 5 mins does ...
6
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1
answer
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Controlling IoT device through a captive portal/web app over Wi-Fi & 4G/LTE simultaneously
Yeah - mostly some mad scientist stuff here.
I have an IoT project I'm working on where each device must be independently connected to each users phone and not connected to any central WiFi network. ...
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2
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408
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How to secure root on IoT device while remaining open to tinkerers
I'm currently spitballing ideas for an Internet of Things device. It will be running Linux on a widely available development board, I'm not too concerned about physical security or the end user doing ...
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1
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133
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How can I review a smartphone sensors readings on a Dell gateway?
I have got a Dell edge gateway 5000 with Linux Snappy 15.04 as OS.
I have installed the gateway access point and I can connect the gateway from my smartphone. Now, I need to read the smartphone ...
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13
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1
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mosquitto_sub "connection refused" on Arch Linux
So I installed mosquitto and mosquitto-client on a Raspberry Pi running Raspbian Jessie through apt-get as well as mosquitto on another Pi running Arch Linux through pacman. On Arch the client utils ...
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Why does Docker reduce power usage on an Internet of Things device in this benchmark?
I've been interested in the applications of Docker on IoT devices such as Raspberry Pis.
After reading A Performance Evaluation of Container Technologies
on Internet of Things Devices, I was slightly ...
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