All Questions

0
votes
0answers
10 views

Pygame initalisation for TFT on /dev/fb1 only succeeds as root

I connected a 320x240 TFT to my Raspberry Pi A+ running Raspbian stretch via SPI and set it up as fbtft_device. It shows up in /dev/fb1 and I can write images to it via pygame. I initialize it like ...
1
vote
2answers
79 views

How to make ups hat run safe shutdown on raspberry when disconnected from the power source

It can be long discussion, because there is no single solution around this, so, to cut the story short, I will tell where I stuck on my way. It is AndroidAuto (media centre in car on raspi) project I'...
0
votes
1answer
42 views

Connecting Raspberry Pi 3 with Huawei Surfstick 372

I tried to connect my Raspberry Pi with the Huawei Surfstick. All the tutorials i watched so far didn't helped me. If i plug in the Surfstick the raspberry shows that it is associated with it and has ...
0
votes
3answers
46 views

How to edit Raspberry Pi files from SD card on Windows machine?

I am distributing multiple Raspberry Pi OS images, all images are almost identical, the only difference is that there is one file /usr/MyFolder/MyFile.txt which content is different for different ...
0
votes
0answers
17 views

Waveshare 3.5 (A) display speed 41000000 not work

i had a real waveshare 3.5 lcd. and, i try to edit config.txt. i'm try to edited speed=41000000,fps=60 and speed=36000000,fps=60. refresh rate is worked so smoothly! but display's color is terrible. i ...
0
votes
0answers
7 views

Frequencies available for wavechaining using PIGPIO library

I am working with the PIGPIO library to run stepper motors. I am using wavechains to the STEP pin of the driver. I need help regarding the possible pulse frequencies available for wavechaining. I ...
0
votes
0answers
13 views

Simple network manager application for 5inch display

I want to install on my Raspbian Lite (I already installed basic xinit packages and I'm able to run a graphical jar app without problem) a simple network configuration with GUI. My goal is to connect ...
0
votes
1answer
16 views

Retropie boots to 640x480 resolution over HDMI

I flashed the latest Retropie image (4.4) and it boots with a resolution of 640x480 when connected over HDMI to my 4k TV. I used the correct Retropie image for my Pi 3. I confirmed the screen ...
0
votes
2answers
32 views

pi-hole acting as nameserver for a domain?

I feel that I may be making a mistake in my plans to host my own DNS for a domain I own. I want devices within the private network to all have subdomains to my main domain, e.g. laptop.example.com, ...
-1
votes
0answers
25 views

Power management in Windows IOT

Because my project is in the field and not in a lab, power consumption is a significant issue. According to specification an idle Raspberry Pi 3B+ bare board has a current draw of 330mA. Long term ...
0
votes
1answer
37 views

VNC without pass from external internet

Problem I want to use raspberryPi's Chrome from my Mac in order to watch some videos. In order to do that, I am trying to make VNC connection. Condition raspberry pi and my Mac uses different ...
0
votes
1answer
38 views

is it possible to set up a Raspberry pi cluster to act as a single pi with increased resources?

I have acquired some extra raspberry pi's and am looking to make use of them all in some way. As I have been reading around, all of the "turn your Pi into a supercomputer" articles are only referring ...
0
votes
0answers
13 views

Raspberry Pi to Raspberry Pi (Host to Host) IPSec Tunnel

I neeed to create an IPSec tunnel from RPi1 to RPi2 as described in the diagram below: RPi1-------WLan0------Router(No internet connectivity - only LAN)------WLan0 ------RPi2 A few days ago I posted ...
1
vote
0answers
21 views

Raspberry Pi 3 bluetooth stops working after a while

I use it to connect to a speaker (as a pulseaudio sink) dmesg | grep Blue shows the following: [ 14.034501] Bluetooth: Core ver 2.22 [ 14.034587] Bluetooth: HCI device and connection manager ...
1
vote
0answers
32 views

Run Raspberry Pi 3 as VPN access point with pi-hole

I've got my Raspberry Pi with Raspbian running as pi-hole, connected through Wi-Fi to OpenVPN with most of my devices, where it blocks ads. I'd like to set RPI as VPN access point without ...
0
votes
0answers
10 views

RPI 2 - Libreelec with Kodi - sound improvement

I installed Libreelec (with Kodi) on the Raspberry Pi2 and I did connect it to a PC Monitor (HDMI). PC Speakers connected to the monitor or even to the Raspberry Pi (3,5 mm jack) give me poor sound ...
0
votes
1answer
29 views

Cannot ssh to Raspberry Pi zero W via Usb

I usually ssh to my Pi zero via usb, but for some reason its not working anymore. but after looking in the gui using hdmi, it seems like the ip on usb0 is different from what is showing on my windows ...
0
votes
1answer
19 views

Can i use 5v 3amp. in Raspberry Pi3 B+ [duplicate]

i am using Raspberry Pi3 B+ and i am in a confusion that can i use 5 volt, 3 ampare adaptor in my Pi?
-1
votes
0answers
12 views

to share cctv dvr video on raspberry pi monitor from android mobile phone

my DVR is already connected to android mobile phone using internet. How can i watch the remote DVR video on raspberry pi with Ubuntu operating system, without window os using d link wi fi internet?
0
votes
0answers
26 views

using I2C in threads

I have several devices on one I2C Bus and am wondering now what happens, if I have some threads using this one I2C Bus. Do I need to implement a scheduler or is the I2C Bus automatically blocked ...
2
votes
0answers
19 views

Pi with PulseAudio over wifi - can't connect

I was trying to set up my RPi 1 as audio device for my laptop and found this answer. On the RPi all the steps worked fine, except that /etc/default/pulseaudio is empty. But in the linked answer the ...
0
votes
1answer
18 views

Raspberry pi Proxy ARP wifi bridge + extra ethernet adapter

Going through this thread: proxy ARP WiFi bridge Raspberry Ingo´s solution is working fine for me but I´m looking for an extra... With this WiFi bridge I want to use an add USB-Ethernet adapter (...
0
votes
0answers
11 views

AirPrinting to Wireless Print Server on the Raspberry Pi Zero W

I've setup my RPi Zero W as a Wireless Print Server (with cups, samba packages) for an old HP LaserJet and it works great. Prints from my Windows laptop are nearly instantaneous. I then installed ...
0
votes
0answers
19 views

Resolution problem in 5 inch screen

I have one 5" screen, when I connect it to my Raspberry Pi see like this: But when I connect it to my computer the screen works well: I tried with change the parameter in video section in config....
0
votes
0answers
21 views

Raspberry pi 3B+ RCA noisy video output

I am working on a project in which I would like to connect my RPI to an old CRT TV, For this, I am using a 3.5mm to RCA composite cable. But when I connect my raspberry pi and TV the output on so ...
0
votes
1answer
30 views

Raspberry Pi 3 Prototyping Breadboard HAT

How do I get the pin connect on the board. I see how to plug it on top of my raspberry pi through the female pin connected that is attached to the hat. But how do I connect the raspberry pins to the ...
0
votes
0answers
17 views

How can I gain internet access after a valid login?

I set up my iptables on my raspberry pi to redirect ALL traffic to localhost where my landing page is hosted, so that people on my AP can't access internet without logging in(correctly) first. On the ...
0
votes
0answers
22 views

How to mount Apple Time Capsule to Raspberry Stretch version 9

Tried to update related article but closed to members with less than 10 merits. So, this isn't a question. Instead, it's an update to article below. How to mount Time Capsule from Raspberry Pi Had ...
1
vote
1answer
43 views

How to increase usb webcam fps?

To record video from my USB webcam I use ffmpeg with v4l2 driver (command below). ffmpeg -f v4l2 -r 30 -s 640x480 -an -sn -i /dev/video0 -f avi temp Unfortunately fps is too low for 640x480 (around ...
0
votes
0answers
9 views

Multiple delayed output from pi camera

I’m trying to create up to 4 delayed outputs from the pi camera. The length of the delay needs to be varied 15-60 seconds. Is there a way to buffer the cameras feed and use the same buffer for all the ...
0
votes
1answer
25 views

GCC and makefile on Raspberry Pi running NOOBS deletes my c file

I am having an issue with my pi where I run gcc or make from the terminal and my main c file included in the compilation is deleted. I am using the wiringPi library to communicate with some sensors ...
0
votes
1answer
33 views

External 12v power supply to relay

I have a 12v 8 channel relay https://www.modmypi.com/raspberry-pi/relays-and-home-automation-1032/relay-boards-1033/8-channel-12v-relay-module which I want to connect to my RPi3 so I need an external ...
-3
votes
0answers
23 views

Code for stepper motor 28BYJ-48 to work with a pibrella

I have already attached the wires to the outputs (Red - E+, Orange - E-, yellow - F-, pink - G-, Blue - H-) but am not sure how to program it.
0
votes
1answer
85 views

Is there a good simulator for Raspberry Pi

Sorry to ask this kind of question. Is there any good simulator for Raspberry Pi? because I need to learn more about the raspberry pi but my problem that I can't buy all the sensors such as ...
0
votes
0answers
19 views

How can I install/use smptlib in Python 3.x with Thonny

I have got this response. I have no idea how to avoid it: Traceback (most recent call last): File "/home/pi/Franz/email3.py", line 2, in <module> import smtplib File "/usr/lib/python3/...
1
vote
1answer
25 views

Change back from LCD driver

I've successfully installed this 3.5" LCD display, which uses this LCD driver: https://github.com/goodtft/LCD-show. My problem is, that when I use VNC to remotely access the PI, (I assume) because of ...
2
votes
2answers
38 views

I'm trying to run a python script at boot but keep getting “socket.error: [Errno 111] Connection refused” error

I've bought my first Raspberry Pi 3B+ last week and started working on my project but I seem to be stuck at this point. I've looked through a hundred different posts but none of the solutions seem to ...
1
vote
2answers
95 views

Combine 2 Raspberry Pi 3

Can i somehow combine 2 Pi's so i have a better CPU speed? I'm new to this so a link to some tutorials (if possible) would be nice I know you can create a cluster for a database so you can scale it, ...
0
votes
0answers
7 views

Linkit smart 7688 MPU Live video streaming 10+ seconds leg how to minimize it

i am live streaming my cam connected with linkit smart 7688 mpu and streaming live video on button press but have leg of almost 10+ seconds any one plz guide me how to optimize it as best level. even ...
0
votes
0answers
30 views

Pi Official Touchscreen Dim on Timeout (Screensaver like)

I've done a lot of Googling but not found anything. What I would like to do is dim the backlighting after a timeout period of no GUI activity and restore the backlight brightness on GUI activity. ...
-1
votes
0answers
21 views

switch raspberry pi from client mode to access point mode without rebooting

i use this https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md tutorial to turn raspberry pi3 to an access point and also i write a script to hide the ssid and another ...
0
votes
1answer
17 views

What will happen with 2 AV signals

Should be a quick one. I know you can mix AV channels to overlay images but if I connect 2 raspberry pi to one screen in AV and no multiplexer how will the channels mix if they are at different ...
0
votes
0answers
22 views

Correct wpa_supplicant config for WPA2-Personal connection

I need to setup my pi 3b+ headlessly (I dont have access to a monitor or keyboard). I have already burnt raspbian lite to my sd and added the ssh and wpa_supplicant.conf files. However, the pi does ...
0
votes
0answers
12 views

How to use GPIO buttons to interact with front end of Nodejs server

So I'm currently trying to make an application that will display columns of data in the browser. I want to be able to interact with what is being displayed with buttons wired in through the GPIO pins. ...
1
vote
1answer
30 views

where to buy the raspberry pi 7" touchscreen display board separately?

My raspberry pi 7" touchscreen display board black plastic connector (BROWN CONNECTION ABOVE RPI DISPLAY LETTERING) that holds the ribbon to the raspberry pi broke and I am looking for a replacement ...
0
votes
0answers
19 views

creating a .deb package and autorun it [closed]

I'm using a Raspberry Pi 2 Model B running the latest Raspbian Stretch Lite 2018-11-13. I built a program that communicates with a LoRa chip (SX1276) using SPI, gets some data from a temperature ...
0
votes
0answers
15 views

How to emulate Raspberry USB boot mode

I wrote a script called raspiBackup which allows to create a backup of a Raspberry. Every time I publish a new version in the community (it's Opensource) I run an automated and unattended regression ...
0
votes
2answers
38 views

Why does my IP address become weird when trying to set up a static IP address?

My Pi is connected to my router by Ethernet. Attempting to set up a static IP address for my Pi, I added the following lines to dhcpcd.conf: interface eth0 static ip_address=192.168.0.2/24 static ...
0
votes
0answers
25 views

This site can't be reached

My Raspberry Pi is successfully connected to internet but my chromium browser is showing the error "This site can't be reached".
1
vote
0answers
59 views

Burned PI while using GPIO pins

First of all I'd like to point out I already know there a wide variety of posts covering this issue but I'm wondering whether you could help with my case. I was messing around with the GPIO pins ...

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