All Questions

0
votes
0answers
2 views

Clone my setup for multiple raspis

I'm going to have a bunch of people learning computing with raspis. I have my own 3b+ running Ubuntu MATE 18.04 set up with everything software- and config-wise I want the students to have. Is there a ...
0
votes
0answers
7 views

Raspberry pi port forwarding issue

I have a raspberrypi which is raspbian installed.I am connecting rpi with ssh via my home wifi.Then Installed 3proxy,usb modeswitch and wvdial.And my 4g wifi dongle is connected and up.This my config: ...
0
votes
0answers
6 views

How do I can connect to static IP eth0 through wlan0

What I want to do : Device A (PLC, static ip=100.10.10.11) | | eth0 connection | Device B (raspberry B3, Rasbian lite) | | wlan0 (wi-fi) OR USB to Network ...
1
vote
0answers
9 views

How to allow access from OpenVPN set on eth0 to wlan0

So I have the following configuration: +---------------------+ +----------------------------------+ | 10.10.10.* | | 192.168.100.*...
0
votes
1answer
12 views

How to send a file to raspi from different computers which are not connected to one another

It is first time for me working with Raspi. I would like to send a file(if possible via mail in the form of attachments) to my raspi from one/more computers/systems(which are not connected to each ...
0
votes
0answers
5 views

Raspberry Pi WiFi connection to Enterprise WPA2 WLAN

This is my first question here. I want to connect my RPi to my company WLAN network but there are some problems and I am out of ideas to solve them. The WLAN does not appear in the list of WLAN's in ...
0
votes
2answers
31 views

I want to run a python3 script on startup and in an endless loop on my raspberry pi

I have created a smart vending machine using my Raspberry Pi. For now, I open the pi using ssh and run the script manually for every transaction. I want to automate the process and run the script on ...
0
votes
0answers
12 views

Pigpio reading sensor returning -83”i2c read failed”

I am testing using my new air quality 5 click sensor with my Raspberry Pi (https://www.mikroe.com/air-quality-5-click) using command line. When I enter i2cdetect -y 1it appears at address 48. Then ...
0
votes
2answers
14 views

Find out whether SPI is enabled or not

I have a game that needs SPI. In the installation instructions, I noted that SPI has to be enabled via raspi-config. Now, I'd like to check in a shell script whether the user has activated SPI or not....
0
votes
2answers
28 views

How to add text file to Raspberry Pi folders' directory without opening the operating system

I need to add a text file to any raspbian folder but without opening the OS. I tried as follows: I inserted the SD card in my computer. I sent the text file to the SD card. I found the file in the "...
0
votes
1answer
17 views

Why is bme/bmp280 temperature and humidity sensor returning 0 value?

I'm having problems with bme/bmp280 temperature and humidity sensor on my raspberry pi 2. It does not give me feed back information. i have my ARM i2c protocols on and i wired it correctly but it ...
-4
votes
0answers
33 views

Why are some PS1 games not emulated well in RetroPie? [on hold]

I installed raspberry pi 2 latest retropie version and i added all ps1 bios + ps1 games but some games is not working on my pi 2. Ghost in the Shell (not working) Tomb raider 2 (sometime game freeze ...
-4
votes
0answers
18 views

Scada for Raspberry Pi - prices?

Do you have any experiences with SCADA solutions for Raspberry Pi? I want to find optimal solution, where is balance between number of tags, stability, functionality and price. Let me know, if you ...
1
vote
0answers
7 views

LibreELEC PVR not functioning

I am new to RPi and LibreELEC, and want to get working live TV and recording. I bought myself an Xbox One TV tuner which I have heard is compatible with Raspberry Pi. So I boot up my Pi, go onto TV ...
0
votes
0answers
19 views

Share Wifi Over Ethernet on the Same Subnet

There are a great many tutorials to do this that require setting up my Pi as a DHCP server. This puts downstream devices on a new subnet. Use case: I want my Pi, which is connected via my WiFi, to ...
0
votes
1answer
23 views

Etcher (process stopped due to power cut now what?)

I was flashing my SD card with rasbian using etcher. while validating 5% my computer turned off due to power cut now when I turned it on the sd card capacity shows 42 mb so I formatted it nothing ...
0
votes
1answer
11 views

Link JSON file in Raspbian apps

I had developed an python application to run on Raspbian by using Pycharm. When run in my Raspberry Pi using Pycharm run function, everything is ok, no error. Then I installed my apps to Raspberry ...
0
votes
2answers
28 views

Calibrate PH-4502C pH meter

I have a pH meter (DIY-4502C) hooked up with Raspberry Pi. However, the instructions to calibrate is in Chinese and seems outdated. Does anybody know how to calibrate it for measuring pH4-7?
1
vote
1answer
16 views

Raspberry Pi Shows Low Power Lightning Bolt When Only Using 1 of 3 Amps

My Raspberry Pi 3B+ is running Kali Linux on the official 7" display. I am using an Anker power bank that says: "5V=6A (3A max per port)" in the description. When using the Pi, it constantly shows the ...
1
vote
1answer
25 views

Can't get HC-SC04 Sensor to work

I'm using a Pi Zero W with a soldered project board to interface two ir Sensors and trying to make an HC-SR04 sensor work. I'm using the 5v supply to power all three sensors. I've set up a Motion.py ...
1
vote
0answers
14 views

installing multiple versions of curl on raspbian stretch

The current version of raspbian stretch supports curl 7.52.1, however for an application I'm running I need curl 7.56 or above. How could I manually install the latest version of curl without breaking ...
1
vote
1answer
20 views

Install rasbian with all settings

Is it possible to install rasbian with all settings as I want them, with scripts and gui I have programmed and with mariadb with all necessary tables? So the next time it boots it is ready as the ...
1
vote
1answer
27 views

Normal Work of RPi 3B+

I am newbie and i want to understand watching only on indicators, is Rpi 3 B+ work quite well? I mean, are green and red lights should glowing both permanently together or red light can glows ...
1
vote
1answer
34 views

Getting the doorbell signal to my raspberry pi

This is the first time I'm doing such a project. I haven't started yet. Right now I have the raspberry pi in pic 1 (the original I think). If i press the button (pic 2/3) A signal goes towards the ...
1
vote
0answers
16 views

Pi Zero W 1.1 dead wifi

About a month or two ago I bought a pi zero w from microcenter for a project but I didn’t start on it until now. I now realize the Pi that I got is one of the defective ones with a bad firmware, so ...
0
votes
0answers
12 views

IncrediblePBX will not boot on newer versions of Raspberry Pi

I have been running IncrediblePBX on an older version of Raspberry PI. I have made an image and copied to new micro SD card, but cannot get it to boot on newer versions of Raspberry Pi. I have ...
1
vote
0answers
11 views

Raspberry Pi/OBDII/Serial Communications over Bluetooth

Thanks for having a look at my post and my problem :) I'm presently developing an automotive on-board diagnostics scanner application in python3/wxPython. For the communications heavy lifting, I'm ...
1
vote
1answer
25 views

Is a RC snubber required when using the pi with a relay?

I am hoping to use raspberry pi to switch on and off a heating lamp and an aquarium pump via a relay switch. Both devices are plugged into 120V AC normally. The relay tutorials online seem to be ...
4
votes
0answers
20 views

Why does my apache take several minutes to spawn workers?

I'm running Apache 2.4.25 on a Raspberry Pi 3A+ with Raspbian Stretch and every first request after booting takes several minutes. The connection does not break it just loads forever. So far I have: ...
-1
votes
1answer
46 views

Raspberry Pi at scale, how to get unique id that can be read from software and hardware

We are going to adopt Raspberry Pi in our products, this means the RP must associate with unique product. Given that RP does not have any printed serial number on its board, How one can get any unique ...
0
votes
1answer
14 views

Multiple VNC Servers (Touchscreen)

I am using a RaspberryPi (3B+) with the official 7" touch screen. I have VNC installed and connecting to it works with the touch screen resolution 800 x 480 (I am getting a copy of what I see on the ...
0
votes
0answers
22 views

raspberry pi 3 with GPS HAT, status code (data is void)

Hello I'm new in python and raspberry, today I try to run a script take in 'https://www.rhydolabz.com/wiki/?p=18639#comment-47045' But I don't have a valid data in my status code. The code : #...
0
votes
1answer
22 views

Watchdog configuration Raspberry pi 3

My plan is to configure the file /etc/watchdog.conf to detect if the process that I want is down and reboot the system to run again. For example, I work on a Raspberry Pi 3 in Debian 9. I would like ...
1
vote
1answer
16 views

How to avoid repeated commands while call last command?

Normally, when i was using up button to get last commads on shell, my RPi was giving me the commands without showing repeated ones. Let say i command: ifconfig ifconfig ps aux ps aux ifconfig ifconfig ...
0
votes
0answers
13 views

Steam Link app network problems

I setup an Pi 3 (B+) for connecting to steam on my main computer. Steam Link is an application used for connecting remote devices (like the pi) as client with steam on the host computer (https://store....
0
votes
0answers
10 views

Gray desktop screen without icons and VPN problems

I have a raspberry that I use exclusively as server of an openVPN, but for some days it has stopped working. If I try to connect to the raspberry, it looks like this ... While I had actually ...
1
vote
1answer
32 views

“Bridge” Raspberry Pi wlan0 to eth0

I would like to have the following setup. Please note that I'm a beginner therefore "Bridge" is in quotes. WiFi LAN 192.168.1.0/24 <~.~.~.~> (wlan0) RPi ...
1
vote
0answers
7 views

How do I prevent resolvconf to add %eth0 to an address in resolv.conf?

My raspberry runs the follwing relevant services: isc-dhcp-server bind9 radvd The message I get from isc-dhcp-server is this: Unable to set resolver from resolv.conf; startup continuing but DDNS ...
1
vote
0answers
14 views

DS18B20 temp sensor works on Pi 3B+ but not Zero W

I have a breadboard prototype working with a cabled (waterproof and regular temp) DS18B20 sensor and a AM2302 sensor on a 3B+. All is well with it recording at a set interval from each sensor. I'd ...
1
vote
1answer
24 views

Piping (Live Playing) Audio to FFT Process

I am trying to build a project that does a spectrum analysis on audio playing through my Raspberry Pi using FFT. I will be using GPU_FFT in C++ to do the bulk of the calculations (which should be ...
1
vote
0answers
9 views

Latest Qt5 does not provide EGLFS during cross-compilation

Some time ago I set up a Linux host to cross-compile Qt5. I used this configure command: ./configure -release -opengl es2 -device linux-rasp-pi3-g++ -device-option CROSS_COMPILE=~/opt/tools/arm-...
1
vote
2answers
21 views

Make “iw wlan0 set power_save off” permanent

Q How can I make iw wlan0 set power_save off permanent for stretch? What's the proper way to do it? Edit I'm using an r-Pi 1 Mod. B with an Edimax wifi dongle and Raspian stretch.
0
votes
1answer
10 views

Make ifplugd available again since Raspbian Stretch

On networking I often need to know when a connection is complete established with an ip address or if it gets down. In the past this was done with the classic daemon ifplugd. The Debian package for it ...
1
vote
0answers
19 views

Adafruit Ultimate GPS connection not working

New to PI!! From a new fresh load of OS: I followed the instructions to connect the GPS HAT to a Pi and run the basic test from: https://learn.adafruit.com/adafruit-ultimate-gps-hat-for-raspberry-pi/...
0
votes
0answers
13 views

How to get maximum GPIO output speed in Kernel module?

I'm writing a Linux kernel module on RPi2 to push an array to RGB Led matrix, so I want to have maximum speed of GPIO to reduce the 'flick' when it run Bit Angle Modulation. According to this site, ...
0
votes
0answers
12 views

What defines “source” & “destination” when using cec-client to change HDMI inputs?

I've been poking around with the cec-client app to see what I can do with it when it comes to my magnavox TV. All I seem to be able to do is turn the TV on/off and change HDMI inputs. I feel like I ...
0
votes
0answers
9 views

ffplay and 7'' touchscreen

I'm trying to use ffplay with my RPi3B+ running the latest Rasbian Lite but it returns the following error: Could not initialize SDL - No available video device (Did you set the DISPLAY ...
1
vote
0answers
12 views

Sixfab LTE IOT HAT throwing continuous AT Command

I was working on getting my new Raspberry Pi HAT that I have received and tried the simple example just to see if it is working fine. I have not been able to send a text message to my mobile phone. I ...
1
vote
1answer
21 views

How to switch between operating systems

I am new to Raspberry Pi, and have just downloaded PINN, which I've read is an enhanced version of NOOBS. I was hoping that I could switch between LibreELEC and Raspbian whenever I booted up the Pi, ...
1
vote
0answers
16 views

Issue with controlling GPIO via Flask web app

I am currently building a project in which I am using a Flask web app to control various different components with the pi's GPIO. The issue i am currently having is stopping the execution of code that ...

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