Underside of the Model 3B, launched on 29 February 2016. The Model B, launched on 29 February 2012 for £25 (incl. Launched in May 2011, it had sold 10 million units by September 2016.Ĭlick for video interview with Eben Upton. The Raspberry Pi was conceived by Eben Upton at Cambridge University, inspired by the BBC Micro computer, as an educational computer costing only £25. In his computers he prefers the Linux operating system. John describes himself as a 'hacker' who loves to investigate new things. First radio application - ADS-B aeroplane tracking Publicity shot of the Raspberry Pi model 3B from the internetģ. This keeps it simple and repeatable.John Cooke GM8OTI talked about the Raspberry Pi micro-computer and its several models, and two simple radio applications, at the LRS meeting on 8 March 2017 to a packed room at the Braid Hills Hotel. RASPBERRY PI 2 FLDIGI HOW TOAt the moment, I have a couple of bare wires that I short to start PTT, which I want to connect to a (or 6 as appropriate) that I would like to trigger with RTS.Īnyone have some idea how to set this up? The reason I am wanting to use RTS is so that ANY Ham software can operate PTT by using the "serial port" RTS line. This particular radio has no line in/out, not any sort of data interface, so I must assert PTT by shorting the SLEEVE and RING on the microphone input jack. Not that I am NOT using a signal link, but am using the cmedia audio USB adaptor and directly coupling the audio in/out to the radio (5-watt X1M) which likes the levels very well. As such I cannot assign RTS nor CTS to one of the GPIO pins. I installed bw_tools and the git programs but I cannot use gpio_? as the system tells me it is not installed. I am successfully using then Raspberry Pi model 2 with both fldigi and qsstv but I still need to get PTT working. I added the singalink explicitly as a device listed in /etc/nf. I tried a million things, but I think I know what fixed it. I wasn't getting any signal in fldigi, no waterfall. I fired up fldigi and could suddenly select port audio devices - and my signalink was in there as the USB Audio CODEC as a playback and capture device. So I installed the portaudio packages and recompiled fldigi with portaudio support (your working package probably has this already). But once I got it loaded, I saw I couldn't select any devices in the soundcard config.Īfter reading the fldigi linux recommendations I figured using the portaudio library on top of ALSA was the way to go. If the package loads for you I'm jealous. I had to add a bunch of packages as you'd expect but finally it compiled and worked. The fldigi package didn't fire up for me, I'm not sure why, so I ended up compiling it from source. Turns out I got it working and never had the capture device show in alsamixer so that was no biggie. I don't see a capture device in alsamixer though, and that's freaking me out. The program 'alsamixer' is showing both cards, and I can select between them. The internal soundcard does not have a capture device, so just card 1 is showing up. RASPBERRY PI 2 FLDIGI FULLCode: Select all 0 : BRCM bcm2835 ALSbcm2835 ALSA - bcm2835 ALSAīurr-Brown from TI USB Audio CODEC at usb-bcm2708_usb-1.3, full speed
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