Archiv für den Monat: März 2015

Raspberry PI B+ Quadcore, mit besserer USB Performance

Hallo zusammen,

der neue Raspberry B+ bzw. 2B  startet durch, die Entwickler steigen schon jetzt alle um, es wird interessante Applikationen geben  !!

Hauptgrund ist die verbesserte Performance auf der USB Schnittstelle, die angeschlossenen USB Soundkarten haben immer wieder Schwierigkeiten gehabt, vor allem wichtig für Anwendungen wie SVX/Echolink …

Es wird derzeit auch eine Anwendung mit / für UP4DAR entwickelt, man darf gespannt sein, wird sicherlich noch ein Hobby Entwicklungs Jahr benötigen …

Hier ein Auszug aus der SVXlink Newsgroup der Entwickler die ich fast regelmäßig lese :

The new Raspberry Pi „B+“ and „2B“ have much better power to the USB connectors, so issues like with the old model should no longer be there.

The „2B“ also has the extra CPU speed required to run more demanding applications including SvxLink.

(though most of it is in the form of having 4 cores instead of 1, so is not automatically available to a single-threaded application like SvxLink,

but at least it can have one core available to it all the time)





Very interesting!


A later version of my board may support dual receivers but I have decided to start small and go for only one receiver and transmitter, both connected through the same DB9 connect. I have thought about this a lot, changing between connectors and adding a second one but in the end, I found myself wanting a small form factor as well as one cable to a repeater box and one to the computer, to keep it simple and clean.


I’ve also added the possibility to control the audio input via an onboard potentiometer. I might also add buttons for Vol Up/Down for the output via the sound card functions, this is however not added at the moment.


I bought myself an Raspberry Pi 2 this week and mounted in a black enclosure, this really looks cool and will make a perfect duo with this sound card interface working Svxlink!


73 de SA0AZT