All Questions

0
votes
0answers
2 views

Wifi Repeater – Set Interface down by Default

I use a RPI 1 as wifi repeater with two wireless dongles. I configured it using hostapd and dnsmasq. I want the pi only to be connected to the internet if there is somebody connected to my access ...
0
votes
0answers
8 views

Industrial RFID Reader?

I'm doing a sheep sorting system, i got all the electric ready but I can't find a good "Industrial" RFID Reader. I had the ASR550 from agrident in mind but it's way too expensive, especially for a ...
0
votes
0answers
5 views

Touchscreen (ACER UT241Ybmiuzx): multitouch is working in Chromium but not on desktop or filemanager

I'm stuck with installation of the above monitor and do not find a way forward. Touchscreen is running, operating perfectly with gestures in chromium, i.e. left click is fine. But on desktop or any ...
1
vote
1answer
14 views

No Wifi connection when HAT installed

When using a Hat for the Raspberry (MotoPi from Joy-It) the onboard wifi doesn't connect to my home wifi. But when removing the hat it just works fine. The strange thing is, that I've used the same ...
0
votes
1answer
11 views

PI Zero HDMI output varies with power source

I'm using a Pi Zero W, testing on many power sources. I've testing all power sources with a multimeter and have confirmed that they are all 5V (+/- 0.1) and have adequate current available. 2 amps or ...
0
votes
0answers
21 views

Si7021 temperature & humidity reader — Python code errors

I'm new at this. I bought an Si7021 temperature and humidity sensor, and it's wired to a breadboard -- I believe correctly. I have code, here, from the book "Make: Jumpstarting the Raspberry Pi Zero ...
0
votes
0answers
27 views

wlan0 wpa_supplicant and other

can't establish connection wia WIFI. Can't understant what I'm doing wrong: there is connection properties from my windows PC this is my /etc/wpa_supplicant/wpa_supplicant.conf file ctrl_interface=/...
0
votes
0answers
17 views

Mac shared web folder permission on RaspberryPi

I have my websites folder on Mac where I have created a file sharing with user pi. I have then created a mount to this folder on Raspberry Pi like this in fstab //my-mac.local/Projects /home/pi/...
1
vote
0answers
14 views

Use mobile as remote via Bluetooth

I got Libreelec on my Pi Zero W, and I want to use my phone as remote over Bluetooth. How can I do that?
-2
votes
0answers
21 views

Reading Max485 RS485 interface with Raspberry Pi

I need a python code executed ,on ubuntu mate as my raspberry pi 3 OS, to read data from a device via Max485 model (modbus rtu protocol - rs485 interface ). The used wiring is shown below Thanks in ...
0
votes
0answers
10 views

NRF24 unable to setDataRate(NRF24.BR_250KBPS), always goes to NRF24.BR_1MBPS

I have the following code: import RPi.GPIO as GPIO from lib_nrf24 import NRF24 import time import spidev GPIO.setmode(GPIO.BCM) pipes = [[0xE8, 0xE8, 0xF0, 0xF0, 0xE1],[0xF0, 0xF0, 0xF0, 0xF0, 0xE1]...
0
votes
2answers
37 views

Why can't I boot Raspberry Pi 3 Model B from 500 GiB USB HDD?

I am trying to boot my rapsberry pi 3 model B from an external HDD. I have written an Arch Linux ARM image to both my 16 GiB thumbdrive and 500 GiB HDD. I can boot from that thumbdrive, but the HDD ...
0
votes
1answer
9 views

can't update to python 3,5 although we have install it with the command below

wget https://www.python.org/ftp/python/3.5.6/Python-3.5.6.tar.xz tar xf Python-3.5.6.tar.xz cd Python-3.5.6 ./configure make -j 4 sudo make altinstall can't update to python 3,5 although we have ...
0
votes
1answer
18 views

failing to ssh after Access point setup

I tried to follow the instructions here to set up a WLAN repeater on my pi 3 B+. wlan repeater After I set up I was able to connect through SSH with my pi only through making a WLAN connection to my ...
0
votes
0answers
10 views

I lose Plex and minidlna about once a day

I have plex and minidlna installed in my raspberry pi, and I watch the content with my LG TV. I don't know why, but about once a day, I lose both systems on my TV. I tried to restart services, but ...
1
vote
1answer
39 views

Installing equivalent of unrar package (rar)

I wanted to install rar from packages ( https://packages.ubuntu.com/search?keywords=unrar ), unfortunately it seems that it is impossible on Raspbian: pi@raspberrypi:~ $ rar bash: rar: command not ...
-5
votes
0answers
24 views

Control a linear actuator using raspberry pi [on hold]

I need a diagram wiring a 12v dc actuator, raspberry pi 3, LoRa gateway, 4 channel relay, and GPIO T-shape breakout expansion board. I also want to see a written python code that can do just that. ...
0
votes
2answers
28 views

Is it possible to use a DDR2 Ram Chip on the PI as a pager file?

simple, I have a few old DDR2 RAM chips laying around, and would like to use the Ram chips for a pager file on my PI. is this possible?
1
vote
1answer
35 views

Read/Write GPIO

I wrote an assembly code for my Raspberry Pi to read an I/O with a button and switch an LED according to the state of the button. It seems that the I/O with the LED is toggling all the time and I don´...
0
votes
0answers
18 views

RPi Zero W (Jessie) ffmpeg illegal instruction

Trying to build and install ffmpeg with hardware encoder and rtsp streaming enabled. Attempted to follow instructions here: (https://github.com/KhaosT/homebridge-camera-ffmpeg/wiki/Raspberry-PI) but ...
0
votes
1answer
18 views

Clarification on Access point as WiFi repeater, optional with bridge needed

Regarding the detailed instructions for Access point as WiFi repeater, optional with bridge here: Access point as WiFi repeater, optional with bridge Since the raspberry pi 3 b+ has only one radio, ...
0
votes
0answers
13 views

Unzip libwebsockets-1.22-chrome26-firefox18.tar.gz

I am trying to install libwebsockets into my RPi. I used the wget http://git.warmcat.com/cgi-bin/cgit/libwebsockets/snapshot/libwebsockets-1.3-chrome37-firefox30.tar.gz to download the file. but ...
0
votes
0answers
14 views

Can't Get Pi to Forward port (Network)

I've got a port forwarding issue on my Pi. I have 2 Pi's running and listening with the same server software, Pi's listening respective on ports ie 8005 and 8006, one pi has 8005 and the other 8006 ...
0
votes
1answer
18 views

Can't connect VNC through ethernet while the PC is connected through Wifi to internet

I'm pretty new to both Raspberry Pi and Linux, I have absolutely no prior experience so bear with me. My problem here is pretty annoying. What I'm trying to do is simply using VNC to control remotely ...
0
votes
0answers
25 views

What is the best model of raspberry pi 3 to use as browser on the tv? [on hold]

I want to use a raspberry pi to use as web broswer. The display is a TV. For example to watch live sport online. what is the best from this use between this model A+, B and B+?
1
vote
0answers
23 views

Raspbian Stretch doesn't show any display on boot

I installed the image of raspbian stretch (version: 9) on an SD card and mounted the card on the Raspberry Pi. On first boot the display came up and the initial setup was done. In addition to the ...
0
votes
2answers
42 views

Raspberry pi starting shell script at boot not working

I've been trying to implement a custom procedure triggered by a button connected to my raspberry pi. To do that I've tried to launch a python script on boot that always listens to the button trigger. ...
-1
votes
1answer
25 views

Raspberry install centos

Im a new in rapsberry. I want to install centos but I have never used rapsberry. I used arduino. I downloaded centos 6 for pi. Sd card is ready. But rasrberry the rainbow stays on the screen. ...
0
votes
1answer
32 views

Matching your Raspberry Image into a smaller SD-Card size - using fsarchive and a fresh image on the smaller SD-Card

Everybody knows - by raspi-config we can expand the image to the borders of the ext4 partition of the SD-card, but shrinking is impossible. This will generate copy problems, using a second SD-card to ...
0
votes
1answer
27 views

Why doesn't my autostart file run a simple shell script

I am trying to launch a simple script (let's say it is /home/pi/python/python_code/hello-world.sh) from the /home/pi/.config/lxsession/LXDE-pi/autostart file. I have added the following line to the ...
0
votes
0answers
10 views

Prepare SD card for auto-pairing with bluetooth keyboard

I already own a bluetooth keyboard, and want to use it with my newly ordered Pi Zero W. I don't want to buy a USB keyboard just for bootstrapping. Given the bluetooth MAC address of my keyboard, and ...
0
votes
0answers
23 views

Can't build DKMS kernel module

I'm on Raspian Stretch and an RPi2. I'm trying to install xtables-addons-dkms. This was the output of apt-get on my first attempt: Setting up xtables-addons-dkms (2.12-0.1) ... Loading new xtables-...
0
votes
0answers
16 views

How to autostart OpenVPN from a cold boot on Raspbian Stretch Lite?

I am having difficulties with OpenVPN running at boot on Raspbian Stretch Lite. OpenVPN itself works fine and I can connect to the VPN (Private Internet Access) manually without any problems. ...
1
vote
0answers
16 views

l2ping bluetooth not timing out fast enough

I have been experimenting with pinging a list of known Bluetooth MAC addresses for a tracking project with a Pi 3, however, the ping does not seem to time out until after 5-7 seconds if there is no ...
0
votes
0answers
15 views

Configuratión mcp 3208 en raspberry pi 3 with spi

I have a problem in the configuration of the A / D converter I am working with the Pi 3B +, in case the problem is that I do not know if the configuration is ok, since it only throws a zero value ...
0
votes
0answers
9 views

When pulling up second form everything locks up

So I have been writing an application that looks to see if two barcode readers are connected to it then pulls up a new application so you can say which com port it is on. The code works just fine on ...
-2
votes
0answers
14 views

RFID triggers html

I'm really new in Python and raspberry, I want to build something that I think is simple but need help. I want to scan an RFID card and the raspberry to play an HTML file (stored in the raspberry) ...
0
votes
0answers
7 views

CM3 deploy application using buildroot

I have made an application that uses OpenCV that i want to run on a compute module whenever a microcontroller tells the compute module to do so over SPI. I am very new to using linux for embedded ...
1
vote
3answers
42 views

Network Hats for Raspberry Pi 3

I am trying to be able to connect Raspberry Pi 3 to two networks at the same time through Ethernet. Unfortunately it has only one Ethernet port available. The solution so far is to buy a network hat ...
0
votes
1answer
7 views

Raspbian Stretch udisks2 automount

I have installed udisks2 on a minimal Raspbian Strech image, but I can't find any doc to understand how to configure it in order to have USB automounted device. Any help?
0
votes
0answers
21 views

Blue screen due Windows IoT Core 10 B+ loading

I try to run Windows IoT Core 10 B+ over Raspberry Pi 3 B+. The plate is new. The OS I downloaded from here: Windows IoT 10 B+, I used: RaspberryPi 3B+ Technical Preview Build 17661 I user this ...
0
votes
0answers
8 views

Has anyone worked on a Franklin Controls Titan P-Series Control by Raspberry Pi? [on hold]

I am seeking help starting a project with a Franklin-Control P-Series Titan Pump that will be controlled by a Raspberry Pi 3 B+, actually 2 of these will be linked together via a wireless bridge of 1/...
0
votes
1answer
19 views

Generating signals with Pi

I have a vector of 500 numbers and would like to output these at a sample rate of 1kHz, thus a signal time of 0.5seconds. Is there any way to do this using a Pi? Do the GPIO pins only allow for an On/...
0
votes
0answers
22 views

Connect Raspberry Pi to Wifi using mobile app

I have programmed Raspberry pi to execute program which primarily works using Internet at the boot up. But it works as long as Pi is in my wifi range. Now suppose, my friend wants to use that pi in ...
-2
votes
1answer
23 views

How long does it take to build cmake on a raspberry pi 3 A+

How long does it take to configure, build and install CMake on a Raspberry pi 3 A+? I'm aware that CMake is part of the standard package library, but sometimes you need to build a different, or your ...
0
votes
0answers
24 views

Raspberry pi 3 b+ google assistant Segmentation Fault

I can't get the google assistant library working on my pi. I tried everything on my pi 2 B+, but gave up and got a pi 3 B+, which has the same issue. Every time I run googlesamples-assistant-hotword -...
0
votes
0answers
18 views

Raspberry pi model b standalone netwotk and web server [on hold]

I have a Raspberry pi model b (or b+ I am not sure) and I found a guide to turn it into a standalone network using a usb antenna. I thought of a nice project but to implement it, the pi must work as a ...
0
votes
0answers
19 views

Cross-compiling glibc on Ununtu 18.10 (or 18.04) for RaspberryPi 3 B+

I naively tried cross-compile glibc with gcc 4.7.3.0 on Ubuntu 18.04 using the following command line: ../glibc/configure --prefix=/usr --host=arm-linux-gnueabihf After fixing all compilation errors ...
1
vote
1answer
28 views

Unable to get docker to run

FRESH install of raspbian-lite from NOOBS, tried to get docker to install and run just segfaults. Tried installing the normal way: sudo curl -sSL https://get.docker.com | sh All I get is: ● docker....
0
votes
0answers
22 views

piscope SPI pin activity even though the SPI device is not connected

my final goal is to use python (spidev) to communicate with a BMS chip. Until now I was quite unsuccessful, thats why I wanted to use piscope to track the activity of the SPI pins. The device is not ...

15 30 50 per page