ROS 2 Success with ReentrantCallbackGroups
Robot "Kilted-Dave" was not able to declare docking success from the dock callback because the battery_state callback was not allowed to execute to update the new charging state.
I had already setup callback groups but failed to initialize the battery_state callback group as reentrant.
Single line fix to a problem plaguing my #GoPiGo3 #RaspberryPi4 #ROS2_KiltedKaiju #robot since he was "Humble-Dave" on #ROS2Humble
Nr. 8 der #Artikelserie
#SteadyCommunityContent
Nachdem der Shelly H&T nun seine Daten an den #Raspberry Pi 4 schickt, fehlt jetzt noch die Verkündung der #Höchsttemperatur und #Tiefstemperaturen auf meinem #Balkongarten-Kanal bei #Mastodon.
Im Artikel lest Ihr mein Vorgehen mit #ChatGPT als KI-Assistenten.
Can I power a #RaspberryPiZero2W , via its dedicated USA- micro USB-A power port, from the USB-A port of a #raspberrypi4 , wherein the Pi4 is running on the official Pi power supply? I seem to see USB problems on the Pi Zero's 2nd USB-A micro USB data port (for connecting USB devices to Pi Zero) when the power to the Pi Zero is from the USB-A port of the Pi4. #RaspberryPi
Nr. 7 der #Artikelserie
#SteadyCommunityContent
Nachdem der Shelly H&T brav seine Daten an das Handy schickt, kommt im nächsten Schritt die IT-technische Umsetzung.
Nun soll der #Raspberry Pi 4 dauerhaft als Empfänger zur Verfügung stehen und die #Wetterdaten speichern.
Im Artikel lest Ihr das Vorgehen mit #ChatGPT als KI-Assistenten.
Nr. 6 der #Artikelserie
#SteadyCommunityContent
Bevor ich versuche, den Shelly H&T per Software "an das Internet" anzubinden, wird er manuell in Betrieb genommen. Also eine Direktverbindung zwischen #Temperatursensor und #Smartphone.
Schauen wir mal, ob das wirklich so einfach geht, wie die #Bedienungsanleitung es verspricht.
Nr. 5 der #Artikelserie
#SteadyCommunityContent
Nach der #Inbetriebnahme des #Raspberry Pi wird nun der #Temperatursensor beäugt. 
Ich möchte auf meinem #Balkongarten über einen Sensor 7 × 24 die #Temperatur und die #Luftfeuchtigkeit messen und die Maximal- und Minimalwerte auf #Mastodon tröten.
Los geht's mit dem #Unboxing des Sensors:
#Artikelserie Nr. 3 von n:
(Community-Content)
Weiter geht't: Mein #Raspberry wurde mit einem #Acrylgehäuse geliefert, das es nicht gibt. 
Keine #Aufbauanleitung, keine Dokumentation, kein Listing im Shop des Händlers, keine Funstelle im Internet - und jetzt der Oberknaller - ätsch, steht im Artikel.
Irre. Wie die Story ausging, lest ihr unter dem Link:
Has anyone managed to make the #waveshare #ups #hat E work on a #raspberrypi4 ? I have no #i2c data from it at all. Pins look connected. Pi has power over the pins. But no i2c.
https://www.waveshare.com/wiki/UPS_HAT_(E)
Soldered pins also do not work. i2c does not work for protected and unprotected batteries.
#i2c #pogopins connection of #waveshare #ups E (https://www.waveshare.com/wiki/UPS_HAT_(E)) #hat to #raspberrypi4 #gpio appears not to be detected. Anyone have similar problems with #pogopins or are they 99% reliable normally? Thanks
Me gustaría pasarme a #selfhosting tengo algunas #raspberrypi4 creo sin usar y un ssd externo pero no sé si es suficiente y encima desde mi cuarto solo tengo WiFi y el router está al otro lado de la casa 
Single board computer #sbc for #lora #mesh
Installation of #reticulum #meschchat on #RaspberryPi #raspberrypi4 following https://github.com/liamcottle/reticulum-meshchat/blob/master/docs/meshchat_on_raspberry_pi.md
Video: https://www.youtube.com/watch?v=Hzq_imh79DM
Shows how you can use a raspberry pi #headless i.e. without screen keyboard etc. and run it via a #browser interface, absolutely ideal for running a #radio #lora #rnode that is placed out of reach and for #solarnode #solarrnode projects in the long-run. Step by step guide following Liam Cottle's instructions above.
> Finished dev [unoptimized + debuginfo] target(s) in 37m 33s
> $ cargo r
Finished dev [unoptimized + debuginfo] target(s) in 3.62s
Running `target/debug/roc`
> The current directory (/home/pr/roc) does not contain a main.roc file to use as a default.
> You can run `roc help` for more information on how to provide a .roc file.
Oh yeah, got #RocLang working on a #RaspberryPi4 :)
#rust / #roc / #zig / #nix / #funtional #programming / #RasberryPi
Allgemeine Frage:
Ich möchte gerne einen #raspberrypi4 mit Audiointerface über #netjack2 ins Studio einbinden. Die Frage ist, welches OS für #lowlatency Audio geeignet ist. Ich dachte, #zynthian wäre wohl eine gute Option, aber vielleicht hat ja noch jemand bessere Vorschläge.
Today tried to restart my #Homeassistant OS on #RaspberryPi4 , but it got stuck. Turned off and on again, but nothing. So luckily I have nightly #backup•s.
I flashed a new SD card with HA OS 13 image, started the PI and tried to restore from Backup, but the spinner kept rotating forever. Reloading the page showed: nothig was restored. Tried again and looked at the browser dev tools. Saw a post req with status 400 and response payload indicating my passwd was wrong. 1/2
#Debian #raspberrypi #raspberrypi4
Będę bardzo wdzięczny za wykaz wszelkich pomocnych komend i pomocne manuale dla noba takiego jak ja, rozpoczynającego przygodę z Debianem i RaspberryPi.
Sam też poszukam, ale liczę na Wasze doświadczenie i sprawdzone materiały.
Dziękuję!
Długo tak? Czy coś poszło źle?
Meet Raspberry Pi Connect, a New Tool to Access Your #RaspberryPi OS #Linux Desktop Remotely Using a Web Browser https://9to5linux.com/meet-raspberry-pi-connect-a-new-tool-to-access-your-raspberry-pi-remotely
Unless you #selfhost your own #mastodon instance, or you're a #mastoAdmin, you have likely taken #fullTextSearch for granted.
Behind search for masto is a resource-hungry #java application called #elasticSearch. Sure you might be able to get Masto to run on a #raspberrypi4, but you won't be running elastic search with it.
Having recently moved my instance to a much more powerful system, I now run ES, and WOW what a difference being able to search post makes! Soooo many times I wanted to reference a toot that had scrolled by but had no way of finding it. Now I do!
Even though I've put some serious resource limits on ES, it's bar none the most resource intensive service running (out of around 25).
Please consider sending a few bucks to the #MastodonAdmin of your instance. Better yet, if you can afford it, sign up for a monthly donation. They need it.
♬ 
FREE PALESTINE