It seems like common Linux packages like gpsd are not available through opkg yet, nor is there a tutorial in the wiki how to get the actual position with the GPS Expansion.
Did anyone achieve it to get the GPS Expansion running with the Onion Omega?
I can confirm that the GPS Expansion is working correctly since I was able to test it on my Windows PC.
Arduino IDE is Version 1.6.7
The Omega is actually providing the Wifi my Computer is connected to ("Omega-XXXX"). So yes, I am able to access the omega via SSH (with Putty and the local IP 192.168.3.1).
Does "both on the same wifi network" mean that my computer and the omega should be connected to the same other wifi network? Because I tried that as well, but wasn't able to find the omega (192.168.3.1 obviously isn't the right IP then).
I wonder whether the expansions for the omega can be used with other micro controllers as well. In particular I want to use the onion relay expansion with an arduino.
I've heard that the omega communicates with its expansions via I2C. Furthermore Arduino is capable of i2c. I just need to know what pins are used for the i2c communication (20 & 21? As for regular i2c connections?) and what data bytes the relay expansions expects.
Thanks in advance for any help 
@Gabriel-Ongpauco Thanks for your reply. Reflashing the Arduino Dock worked well (according to the console). Unfortunately the only difference after that is, that the LED on the Arduino Dock is flickering permanently now. The attached Omega is still not doing anything neither does the LED on the omega go on or something.
I assume that the omega does not get (enough) power from the Arduino dock. Any ideas?
@Lazar-Demin the power supply was 5.5V, 500mA. The Arduino does work correctly in the mini dock as well as the expansion dock. Seems like just the Arduino Dock is affected.
@Luciano-S I could provide a picture of the Omega on the Arduino Dock as well later. But be assured that I do know how to use it normally and successfully had it running before (with USB power supply).
My setup now is my Omega attached to the Arduino Dock which has a USB cable (connected to by PC) as power supply. Issue as described in my first post.
Today I used my Arduino Dock for the first time with an external power supply via the DC barrel jack (5V). Unfortunately after a very short time it became kinda hot and made strange noises - what brought me to cut it off power supply immediately.
Since then it doesn't work anymore. When I connect it to mains, the small LED on the Arduino Dock flickers for like 1 sec before turning off. The attached Omega does absolutely nothing.
Doe you have any idea how to debug this? Is this a case for the customer service?
@Lazar-Demin Installing Apple's Bonjour service solved the problem for me. Thank you! Out of curiosity: Do you have any idea why this makes a difference?
@Han-Vertegaal lol.. how did you figure that out?
@Lazar-Demin Yes, I did. You can see a part of my board.txt in the very first picture posted here, on the right (including the line uno.upload.via_ssh=true)
Update:
After installing Apple's Bonjour service on my PC (like @Lazar-Demin mentioned here) my omega-arduino is listed as a network port in the Arduino IDE like it should be. I already had the idea in mind that my two issue could be related. It works fine now!
You should definitely add this information to the tutorial! Thank you
@Luciano-S Thx for the quick response! My dhcp file looks the same. Connecting with the omega without the .local doesn't work either.
Any other ideas?
@Kit-Bishop Sorry to hear that you are facing the same issue. Out of curiosity: Did you ever try to connect to an Omega with the arduino expansion? (Because that's another issue I'm facing and I want to make sure this is not related)
Hey,
since I got my Omega 5 month ago I am just able to access it via its IP 192.168.3.1 but not the URL omega-XXXX.local (XXXX is the ID of my Omega of course). I wonder what could be the reason for that? Is there anything I can change to make it accessible via the URL? Are there any other disadvantages of this malfunction?
Sorry, that I have to revive this topic. But as the thread opener I am still facing the issue described in the very beginning. I am not able to flash arduino sketches wireless with the IDE while using the Omega to flash the ATmega works.
Is there anything else I could try to get my onion visible in the "tools" > "Port" menu of the arduino IDE?