Scott Baker replied to the topic 'Indi on the rocks (a Rock64 to be exact)' in the forum. 3 weeks ago

One of these days I'd like to try this idea with an Odroid XU4. I have one running a home NAS server now and it's a beast. Too bad there isn't a low cost board like it that has BT and WiFi built in, it would be perfect for a more powerful version of a project like this. (Not to mention there is a problem getting them now...some sort of run on parts is keeping them low on stock).

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Scott Baker replied to the topic 'My Raspberry Pi 3 Setup' in the forum. 3 weeks ago

rlancaste wrote: No, in the field, I use a 12V battery for all my power so the AC adapter will not work there. One key reason for getting that hub is that it accepts 12 V input. I am powering the hub using one of the outputs of my Dewbuster dew controller. I am also powering my Moonlite that way. I am powering the pi using one of the "power" outputs of the hub, they are 5V.


Thanks. Can you tell me what the size of the hub's power input jack is? I don't have a DewBuster but I'd like to use the hub with my field battery so it looks like I'd need a cigarette plug style (I guess just like you're powering your DewBuster with?)

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Scott Baker replied to the topic 'Keep getting 'device or resource busy' error when connecting' in the forum. 3 weeks ago

jpaana wrote: I think your problem is that "blueman-r" process as my system doesn't list any processes with "lsof /dev/rfcomm0" when not connected and indi_eqmod_telescope when it is. I don't use the bluetooth manager connect but have "rfcomm bind 0 20:16:xx:xx:xx:xx" in my startup scripts.


It appears Blueman is the graphical interface. I did not install it separately, I wonder if it's safe to just get rid of it?

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Scott Baker replied to the topic 'Keep getting 'device or resource busy' error when connecting' in the forum. 3 weeks ago

tkottary wrote: I had similar issue recently and remember doing the below to fix it

sudo chown astroberry /dev/rfcomm0
sudo usermod -a -G dialout astroberry

Replace astroberry with your username.


Just tried that with no luck as well. I took the BTEQ5 and hooked it back up to my windows laptop, everything worked just fine with EQMOD there. I also tried it on my laptop running Linux Mint 18 and it would not stay connected. I could pair, but it would only stay connected a moment. I also could find no way in Mint to assign a com port, so that was no help...was really hoping Mint would help me, but the last thing I need right now is being sidetracked with another linux machine that this won't work on! :)

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Scott Baker replied to the topic 'Keep getting 'device or resource busy' error when connecting' in the forum. 3 weeks ago

xsnrg wrote: Greetings,

One thing you could try is to use lsof (list open files) This should show you what is using it, and give you a place to start.

Try this:

sudo lsof /dev/rfcomm0


COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
blueman-r 3423 root 6r CHR 216,0 0t0 59219 /dev/rfcomm0

As far as I can see, that's legit. If I kill that PID, it severs the connection to the BT.

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Scott Baker replied to the topic 'Keep getting 'device or resource busy' error when connecting' in the forum. 3 weeks ago

Took a SS in the hopes it helps a little? The BTEQ5 is paired, trusted and is set to /dev/rfcomm0. Any ideas what else I can do? I've actually gone back and reinstalled everything from scratch just in case I did something wrong the first time.



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Scott Baker replied to the topic 'Keep getting 'device or resource busy' error when connecting' in the forum. 3 weeks ago

Thanks. I've seen that video and have done exactly what was in it (saw where you posted this for someone else in another thread). Everything goes exactly as in the video except I get an error. I must be missing something else.

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Scott Baker replied to the topic 'My Raspberry Pi 3 Setup' in the forum. 3 weeks ago

How are you now powering the Hub/Pi? Doesn't look like the regular AC cord that came with it. You using some adapter? Also, how are you keeping the Pi and Hub together and how are they attached to the OTA?

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Scott Baker created a new topic ' Keep getting 'device or resource busy' error when connecting' in the forum. 3 weeks ago

I have the Shoestring Astronomy BTEQ5 Bluetooth dongle, it pairs, connects and gets assigned to /dev/rfcomm0 with no issues in Ubuntu Mate on my Raspberry Pi 3. My other devices connect automatically (Canon DSLR and SSAG) when starting indi, but the mount will not connect.

I have an Orion Sirius EQ-G mount, and I've used the same BT dongle in windows to control the mount via EQMOD with very little trouble (just the normal 'getting windows to assign a comport' to the BT dongle).

I've tried changing all permissions to /dev/rfcomm0, making sure my user has access to the DIALOUT group, etc etc. At this point, I don't think it's a permission issue. But no matter what I do, even changing to a different port, as well as doing a symbolic link to /dev/ttyUSB0, nothing works. I always get the same error about not being able to connect to the port, device busy, yadda yadda yadda :(

Hope someone has some insight to this issue!

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