Blogartikel, Anleitungen und Tipps rund um den Raspberry Pi Singleboard Computer und verwandte Themen.
We will post information about the Raspberry Pi SBC and related topics, like Arduino, Making, Embedded Development, etc.
enabling and disabling a systemd service in Python using DBus
The upcoming picockpit-client reacts to deletion events from the frontend by disabling it’s service (the application will stay installed, however).Similarly, when you decide to run picockpit-client connect again, the service will be re-enabled and started automatically for you.This is possible using the Python DBus interface.the DBus is a bus system for interacting with other applications. [...]
Raspbian SSH Server fails after upgrade from Stretch to Buster (no SSH connection)
I used this excellent guide to update my Raspbian from Stretch to Buster:https://pimylifeup.com/upgrade-raspbian-stretch-to-raspbian-buster/After rebooting my Pi, the SSH connection was gone. Logging into the Pi using the attached keyboard and monitor allowed me to debug the issue:service ssh statusjournalctl -u ssh -n 200"Missing privilege separation directory /run/sshd"This directory needs to be created at startup for [...]
Historische Texte
Als Teil der Überarbeitung der pi3g.com Webseite, in Vorbereitung auf den Launch der Google Coral.AI und AIY Produktreihe, habe ich unsere Webseite auf Englisch umgestellt.Hier als Referenz einige der Texte die wir früher hatten:Wir sind als Raspberry Pi Foundation approved reseller, sowie einer von zwei deutschen Pi Zero Distributoren Ihr starker Partner rund um die [...]
20888
20.888 is the total number of Raspberry Pi we (pi3g e.K.) sold last year (2019).Thank you to all our customers, resellers and partners.
Use PiCan GPS with an external antenna
the PiCan GPS uses this chip:https://cdn-shop.adafruit.com/datasheets/GlobalTop-FGPMMOPA6H-Datasheet-V0A.pdfit has a Built-in 15X15X2.5mm ceramic patch antenna on the top of moduleandAutomatic antenna switching functionAn external antenna can be attached to the PiCan 2 GPS. Page 17 of the Datasheet has recommended specs for this external antenna. The antenna should be switched to automatically, if I understand it correctly [...]
Impact of Coronavirus (Covid-19). Update for pi3g Raspberry Pi Customers
Due to the increased impact of the Coronavirus, we would like to give a statement as to the impact on our business, and the supply to our customers with Raspberry Pi products and other products we distribute.Situation with Raspberry Pi Trading & FarnellOur main suppliers are Farnell and Raspberry Pi Trading for Raspberry Pi accessories. [...]
Google Coral USB Accelerator & AIY Voice / Vision Kit Distribution in Europe
Today, I am happy to announce that we, pi3g e.K., are partnering with Google as a distributor for exciting Artificial Intelligence / Machine Learning products!As of immediately, we are distributing the Coral USB Accelerator, the AIY Voice and Vision Kit. Further products from the Google Coral lineup may be added down the line.In case you [...]
Ab sofort Pi 4 / 2 GB zum Pi 4 / 1 GB Preis
Dank des Raspberry Pi Geburtstags haben wir jetzt wieder mehr Leistung zum gleichen Preis: Die Raspberry Pi Trading hat den Pi 4 / 2 GB im Preis reduziert! Das 2 GB Modell kostet jetzt genauso viel wie das 1 GB Modell. Jetzt bei buyzero.de Raspberry Pi 4 kaufen.
Paho MQTT Client (Javascript), Envoy, VerneMQ: debugging disconnects
After deploying picockpit to my server, a bug was observed: the web frontend would disconnect in very regular intervals. This had not been present on the local development environment. Users of picockpit reported the same bug. I have debugged it today, and applied a hotfix. It turns out it was a timing issue. TL;DR how [...]