Today, I want to try to use Node.js on a Raspberry PI to control the GPIO Pins. I will start with the “Hello World” of hardware projects: a blinking LED.
There are several ways how to install Node.js on a Raspberry PI 3. I used the method, I found here:
curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs
Whenever I want to install a Raspberry Pi, I don’t like to connect a keyboard and a monitor to setup SSH and WiFi. It’s much better to prepare the SD card on a normal PC and set up Wifi and SSH. Then you just need to put the SD card into the Raspberry PI and start it.
As I like photographing and hamradio I had the idea to combine both. Every day hams are sending APRS messages from all over the world, but all we see is a dot on a map. Isn’t that sad? Let’s show how it really looks where we do hamradio. Let’s show what’s behind the track on a map!
The idea is to take a photo and send a APRS beacon at the same place at the same time and post both on Twitter using the hashtag #aprsphoto.
I just started:
I am working with APRS a lot at the moment. I started a couple of months ago with almost no knowledge about this mode and now I have the feeling, I slowly understand it. Here are my 10 reasons, why APRS is a great mode!
Since a couple of weeks I am running a APRS RX-igate on a Raspberry PI with RTL-SDR dongle and pymultimonaprs. To show on the map that it’s a RX-only Igate it’s recommended to set the black diamond with a “R” overlay as a symbol. To do this you have to use “R” as table and “&” as a symbol.
Here is my configuration:
"comment": "PyMultimonAPRS iGate",
"text": "Raspberry PI - RX Igate",
Since a couple of days I was trying to get my mobilinkd bluetooth tnc running with Xastir on Ubuntu 16.04. As root it was working, but as a normal user I was not able to connect with Xastir. Today I finally found the solution. Thanks to all my twitter followers who helped me finding the reason and solve the issue.
I was asked a couple of times about the APRS settings on the FT1-XDE, so I decided to list them here with some comments. Maybe it’s useful for somebody else.
To open the APRS settings, press [DISP] for a second and chose menu 9 (APRS) and press [ENT]
If you just want to start quickly, here are the basic settings:
4) APRS Modem: 1200bps
15) BEACON STATS TXT: 73
16) BEACON TX: manual
18) DIGI PATH: WIDE1-1, WIDE2-1
20) GPS POWER: On
23) CALLSIGN: Put your callsign there
24) MY POSITION: GPS
25) MY SYMBOL: Whatever you want as a symbol
Now leave the APRS settings, switch VFO B to 144.800 (if this is the APRS frequency used in your country) and then press F + 9 (BCONTX) and you will send your first APRS beacon message.
There are a lot of useful (and useless) hamradio realted apps for Android. I will list some of the apps I am using. Some of them need a registration and some are only allowed to be used by licensed hamradio operators.
If I am missing any good app or you have any comments on the apps I am using, just leave a comment.