tquadrat.org

The Raspberry

Common information about the Raspberry Pi, my projects based on that computer, and other useful stuff around the “Pi”. Refer also to the page with the Linux Stuff for information related to the Linux operating system in general.


Raspberry Pi Documentation

The official documentation for Raspberry Pi computers and microcontrollers. The Raspi Imager can be found here.


The Raspi Camera

Information on how to install the Raspberry Camera, and how to use it.

The Raspi as a USB Device

Information on how to use a Raspberry Pi as a USB device (like a keyboard or a harddrive) for another computer. Mainly Raspberry Pi Zero models are used for this purpose, but also Pi 4 and Pi 5 can be used this way.


Miscellaneous

Unsorted notes about various features of the Raspberry Pi and components to use with it.


Setting up a Music Server

How to setup a music server based on OwnTone is described here. This software does not only run on a Raspberry Pi, but also on various other Linux versions.

PiJuice

The PiJuice hat provides a UPS to the Raspberry Pi. It provides also an RTC.

If the PiJuice GUI does not start, refer to this article.

To enable the PiJuice Service that is required to configure the software, try this:

sudo systemctl status pijuice.service
sudo systemctl enable pijuice.service
sudo systemctl restart pijuice.service

Remote Desktop Protocol

From Wikipedia:

Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft Corporation which provides a user with a graphical interface to connect to another computer over a network connection. The user employs RDP client software for this purpose, while the other computer must run RDP server software.

[…]

Microsoft currently refers to their official RDP client software as Remote Desktop Connection, formerly “Terminal Services Client”.

The protocol is an extension of the ITU-T T.128 application sharing protocol. […]

To use the Remote Desktop Protocol (RDP) to access the Raspberry Pi computer, the server software xRDP must be installed on it:

sudo apt install xrdp

Of course on the client machine (that one that displays the Raspi’s desktop), a corresponding client software is required

Configuration Files

Black Screen after Login via xRDP

Usually this happens when the same user as for the RDP session is already logged in locally, and both are using the same window manager. In newer versions of the Raspberry Pi OS, Wayland is used instead of X11 – the latter is still used by xRDP – and as both are using different window manager implementations. Therefore it should work in most cases.