Unanswered Questions
7,970 questions with no upvoted or accepted answers
10
votes
1answer
1k views
Autologin into a webpage via the default GNOME-Webbrowser
I'm trying to call an HTML page like this with the Raspbian's default web browser and it leads me just to the default login-page.
Neither does it with Midori on the desktop.
When calling the exact ...
8
votes
1answer
1k views
Thermal printer with Raspberry Pi 2 outputs only Chinese chars
Following thermal printer + raspi2 tutorial for printing images (https://learn.adafruit.com/networked-thermal-printer-using-cups-and-raspberry-pi/connect-and-configure-printer), I've already connected ...
7
votes
0answers
511 views
Cannot Use SPI frequency above 500 kHz
I am running Arch Linux ARM on a Raspberry Pi 2 Model B, and I am attempting to communicate with a TFT display. I am writing a kernel module to interface with the display using SPI, and it works, but ...
7
votes
0answers
578 views
connmanctl having problem with complex passphrase
The built in WiFi module seems to work fine, as it can connect to both of my open networks I created for testing, i.e. the 2.4GHz, and the 5.0GHz ones.
If I set a simple passphrase (i.e. contains ...
7
votes
1answer
7k views
Running Selenium & Firefox & geckodriver on Raspberry Pi 2 Model B
I'm trying to run Selenium on my Raspberry Pi 2 Model B but I'm having trouble finding a compatible combination of versions of Selenium, Firefox, and geckodriver.
(I've already run sudo apt-get ...
7
votes
1answer
2k views
How to start Xorg while showing splashscreen?
I'm creating a simple device with a Raspberry Pi and a touchscreen display connected to it.
On boot, I want to show a loading image (a simple gif or jpg) while X is starting. Then a chromium-browser ...
6
votes
0answers
908 views
How fast can GPIO pins toggle on the Pi 4?
Benchmarking of the Pi 4 using the Python GPIO Zero library shows a significant increase in the frequency of toggling a GPIO pin on and off compared to previous models. This result is attributed to ...
6
votes
4answers
2k views
Raspberry Pi - Rainbow screen
I'm trying to boot up Exton's Android build on Raspberry Pi 2, but I seem to be getting the rainbow screen.
Here is what I have - 4 partitions as follows
boot which has 512 MB, flagged as bootable
...
5
votes
1answer
561 views
Host Web Server on Raspberry PI via Bluetooth PAN
I don't often post on forums like this, but when I do, there's always someone in the comments telling me I violated some practice of forum posting and I never get a legitimate answer, so I figured I'd ...
5
votes
0answers
170 views
Raspberry as I2C Slave, how to slow down transfer rate?
I have had minor success using the PIGPIO library and interfacing the Pi as an I2C Slave (Using GPIO Pins 18 and 19 as SDA and SCL) with a Campbell CR1000X Datalogger
I am encountering a problem ...
5
votes
1answer
695 views
Rasberry Pi zero and 3 bluetooth transfer speed is slow RFCOMM
I am trying to send a series of bytes from the Raspberry Pi zero W to the Raspberry pi 3 via bluetooth. Im using the PyBluez python package.
I believe that Raspberry Pi Zero has Bluetooth 4.1 and ...
5
votes
1answer
5k views
Chromium scrolling lag on Raspberry Pi 3 Model B running Raspbian Stretch
I received my Raspberry Pi 3 Model B a few days ago, I copied Raspbian Stretch img with dd to 64 GB Samsung EVO card.
I am using a HDMI to VGA adapter on a 1920x1080 Samsung monitor.
Also, I have ...
5
votes
0answers
895 views
Can I control GPIO Pins when using Android on the Pi 3?
I want to install Android on my Raspberry Pi for implementing a GUI app, which is easy to create using Android Studio.
But now I am confused about how to control the GPIO pins on the Pi 3 to turn on ...
5
votes
0answers
2k views
how to connect raspberry pi to google home app?
How am I to connect my Raspberry Pi 3 (PIXEL desktop) to the Google Home app if it already has Google assistant on it?
5
votes
2answers
362 views
Pi4J kills USB bus?
Hello fellow Pi enthusiasts :)
I am currently attempting to control a standard 16x2 character LCD display from the PI's GPIO pins from Java.
I downloaded Pi4J and wrote a small program to initialize ...
