13
votes
How do I install the drivers for a WiFi dongle with the RealTek 8812AU chipset on Raspbian?
"In normal circumstances there is NEVER a need to run rpi-update as it always gets you to the leading edge firmware and kernel and because that may be a testing version it could leave your RPi ...
- 319
10
votes
Accepted
How do I use Yocto to build an sdcard image for my Raspberry Pi 3 Model B?
For an SD Card image file (similar to the .sdimg ones) to be generated your local.conf file must include the rpi-sdimg filesystem type in the IMAGE_FSTYPE variable. This will typicaly give you a ...
- 281
10
votes
Accepted
How do I install the drivers for a WiFi dongle with the RealTek 8812AU chipset on Raspbian?
After hours of reading threads and following guides here and there, the definitive guide that got the driver working was here. Following the steps listed in that post:
$ # install necessary software
$...
- 459
9
votes
Accepted
Issues installing RTL8812BU WIFI driver on Raspberry Pi 4 B
Finally I had a breakthrough!
Instead of using modprobe and dkms, it was enough to follow these steps:
sudo git clone https://github.com/EntropicEffect/rtl8822bu.git
cd rtl8822bu
sudo nano Makefile
...
- 171
8
votes
Accepted
Enable monitoring mode for RTL8188CUS via USB on Raspbian
Turns out the steps to recompile and load the rtlwifi module are correct. The problem is iwconfig not working to enable/determine monitoring mode in this situation.
Instead, I used iw as outlined by ...
- 331
8
votes
Accepted
White screen on touchscreen display
Indeed, it was a problem with the drivers. I switched to use Raspbian and then I installed the drivers, like explained here.
Dowloaded the driver
Extracted the files (tar xvf LCD-show.tar.gz)
cd LCD-...
- 723
7
votes
Level of Hackability of raspberry pi
To update Krzysztof's great answer, Broadcom finally publicly released some code, licensed as 3-Clause BSD, to aid the making of an open source GPU driver. The "rpi-open-firmware" effort to replace ...
- 171
7
votes
Mysterious RPi wifi problem -- No wireless interfaces found
One of the things that I have read a hundred times in dealing with anything attached to the USB on any model of RPi is to make sure that you have a decent Power Supply (2 or more Amps) or use a ...
- 71
6
votes
Accepted
RPI2 Kernel module compilation (kernel 3.18.11+ vs 3.18.11-v7+)
What is the difference between kernel "3.18.11" and "3.18.11-v7+"?
The -v7+ is tacked on to indicate this isn't from a vanilla source tree, and that it was compiled specifically for the Pi 2.
I'm ...
- 58.3k
6
votes
Is it possible to build a Raspberry Pi yourself?
If your idea is to make an exact carbon copy of the Pi 2, you won't succeed.
While @joan stated that the OTP contents are not shared to the public, the actual SoC is also not available. The BCM2836 ...
- 1,681
6
votes
Accepted
Problem with QinHeng CH9200 driver - Pi 2 (4.1.7-v7+)
Important: Follow these instructions meticulously
Note: The OP is using Wheezy and the latest kernel version from raspberrypi-bootloader then is 4.1.7-v7+, while on jessie that version is 4.1.13-v7+...
- 809
5
votes
Raspberry Pi Recognizes Logitech C920 Webcam But Can't Do Anything
I spent a number of hours recently with my C920 and a Raspberry Pi 3 recently to make a babyCam that I could stream within my home network. I may be able to shed some light but also provide ...
- 51
5
votes
Accepted
PiTFT 320x240 Capacitive Touch and Raspberry Pi 2
There should not be a driver problem with the 2.8" display and RPi 2 newer kernels, as support is built in (ie you don't need the adafruit kernel) 4.0.7 works. The main problem is with the touch ...
5
votes
Enable i2c on Ubuntu Mate Raspberry Pi 3
Add the following line to /boot/config.txt
dtparam=i2c_arm=on
Add the following line to /etc/modules
i2c-dev
Reboot
- 70.4k
5
votes
Accepted
What sort of throughput is achievabe over the USB 3.0 port on the Pi-4?
I have a Pi 4 Model B/4GB serving a small office as a router/firewall/gateway with dnsmasq (DHCP+DNS), dnscrypt-proxy, chrony (NTP), and a few other odds and ends. It's fairly busy: up to 20 users at ...
- 166
5
votes
Accepted
Raspberry Pi 4 doesn't show a wireless interface - what drivers are required?
On a Raspberry Pi 4 only Raspbian Buster is running out of the box. On a Buster installation you will find the firmware with:
rpi ~$ apt list *raspberrypi*
Listing... Done
libraspberrypi-bin/testing,...
- 41.7k
4
votes
Accepted
Using an I2C Battery Fuel Gauge Device Driver
Linux 4.4 has an updated driver for the bq27xxx series of fuel gauge IC's. This driver is available in the rpi-4.4.y development branch at the Raspberry Pi Foundation's github which supports the ...
- 56
4
votes
Is it possible to build a Raspberry Pi yourself?
The biggest obstacle I can think of is programming the OTP (One-time programmable) memory of the Broadcom SoC so that it will boot.
I am not sure what infomation is publically available for that ...
- 70.4k
4
votes
Editing Quirks for a USB driver
A real world example that I use
cat /sys/module/usb_storage/parameters/quirks
0bc2:3312:u,0bc2:ab38:u
Note that the format is vendor:device:flag[,...] and that , not \n must be used for multiple ...
- 2,207
4
votes
Accepted
Where to find libraries for using existing popular sensors?
The source of sensor code is generally the same as the source of sensors themselves, i.e., the vendors. Not all of them supply such, and not all of them supply it in a 100 % compatible form. Note ...
- 58.3k
4
votes
Accepted
Raspberry Pi-2 with mainline Linux kernel
While the Raspberry Pi 2 support is present in 4.5, you're also looking for a .config that will work. The changes for multi_v7_defconfig weren't ready for 4.5, so they're currently in linux-next. ...
- 705
4
votes
Accepted
Connect IRF520 MOSFET Driver to a Raspberry Pi 2
That's not really what I would call a motor driver board.
For low current operation I'd be looking at L298N, or L293D, or L9110S based boards. They let you drive a pair of motors forwards and ...
- 70.4k
4
votes
Accepted
Installed kernel headers and $(uname -r) differ
You can restore your system to standard with
sudo apt-get update && sudo apt-get install --reinstall raspberrypi-bootloader raspberrypi-kernel
sudo apt-get install raspberrypi-kernel-headers ...
- 58.2k
4
votes
Accepted
Execute script on boot (with boot folder)
If you have a virgin Raspbian image that was never booted before you will find a script that is executed on first boot up. Look at a fresh flashed CD Card with mounted boot partition for example at /...
- 41.7k
4
votes
What sort of throughput is achievabe over the USB 3.0 port on the Pi-4?
The other user didn't really answer the question asked, about what usb to ethernet adapters work with the Raspberry Pi 4. Here are some forum links I found that may help. I don't have a RPi 4 myself (...
- 141
4
votes
How I can identify and set a needed display module which was missing on boot time?
There's three ways modules get loaded
With a device tree (for something like a RTC module)
When the kernel detects a new USB device being connected.
A list of modules to can be specified in: /etc/...
- 5,251
3
votes
Where to find libraries for using existing popular sensors?
Quick reply: it is a jungle...
But it's not like everybody codes from scratch.
Arduino is simple partly because the inventors limited the choice to one language and focused on code reuse. Raspberry ...
- 497
3
votes
Accepted
Editing the settings that are available through raspi-config without using raspi-config
The setting that changes inside the config.txt is dtoverlay. Whenever the GL driver is enabled it is set to dtoverlay=vc4-kms-v3d else commented out.
I had difficulties even finding the config.txt ...
- 257
3
votes
Accepted
Missing build file when building for rtl8812au driver
To build this module from source, I did the following on my RPI2.
Install build tools:
# apt install build-essential bc git wget
Get kernel source code
# cd /usr/src
# git clone --depth 1 https://...
- 146
3
votes
which driver can control 4-5 motors, different types of sensors, speakers?
The most capable motor controller board that gets closest to what you require is called the 4tronix Picon Zero.
As you can see from the picture, it allows you to drive 2 DC motors (bottom right) and ...
- 4,489
Only top scored, non community-wiki answers of a minimum length are eligible