Gina

I'm backing up the card before seeing if I can get WiFi working using an LCD display, keyboard and trackball. I reckon it should be possible to use the GUI to edit the WiFi settings. Also I might see if I can find out why the re-compiling of the source code isn't working. My testing of setting up the system from square one by wiping a card and installing Ubuntu MATE and all the astro stuff from scratch has encountered problems that I haven't been able to solve, so looking at this system, which is working might give some clues.

For reference, the shutdown preferred command is sudo shutdown -h -P now This completely shuts down the RPi but doesn't turn the power off. When shut down the RPi cannot accept SSH as it isn't working and needs powering off and on again to restart.

Just checking...

I think the next step is to compare the source files for the focuser driver that work and the ones that don't work.

AARRGGHH!!! Still getting the error in the focuser driver compilation.

Card Ejected from Mint and put back into RPi. RPi powered up and Terminal connected via SSH. viz ssh gina@asc2 Now to try compiling using these commands :- cd astroberry-diy mkdir build && cd build cmake -DCMAKE_INSTALL_PREFIX=/usr .. make sudo make install sudo reboot

CMakeLists.txt file edited to remove the commands to compile the unwanted drivers. Here a screenshot of the editor showing the relevant section. Only code for the AltIMU and GPS drivers has been removed - nothing else touched.

Backed up and back in RPi ready to load, compile and install Astroberry drivers. First then to install cmake :- sudo apt install cmake Done - here's the Terminal gina@asc2:~$ sudo apt install cmake [sudo] password for gina: Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: cmake-data libjsoncpp1 Suggested packages: codeblocks eclipse ninja-build The following NEW packages will be installed: cmake cmake-data libjsoncpp1 0 upgraded, 3 newly installed, 0 to remove and 4 not upgraded. Need to get 3,502 kB of archives. After this operation, 15.0 MB of additional disk space will be used. Do you want to continue? [Y/n] Get:1 http://ports.ubuntu.com xenial-updates/main armhf cmake-data all 3.5.1-1ubuntu3 [1,121 kB] Get:2 http://ports.ubuntu.com xenial/main armhf libjsoncpp1 armhf 1.7.2-1 [65.4 kB] Get:3 http://ports.ubuntu.com xenial-updates/main armhf cmake armhf 3.5.1-1ubuntu3 [2,316 kB] Fetched 3,502 kB in 0s (4,756 kB/s) Selecting previously unselected package cmake-data. (Reading database ... 208195 files and directories currently installed.) Preparing to unpack .../cmake-data_3.5.1-1ubuntu3_all.deb ... Unpacking cmake-data (3.5.1-1ubuntu3) ... Selecting previously unselected package libjsoncpp1:armhf. Preparing to unpack .../libjsoncpp1_1.7.2-1_armhf.deb ... Unpacking libjsoncpp1:armhf (1.7.2-1) ... Selecting previously unselected package cmake. Preparing to unpack .../cmake_3.5.1-1ubuntu3_armhf.deb ... Unpacking cmake (3.5.1-1ubuntu3) ... Processing triggers for man-db (2.7.5-1) ... Processing triggers for libc-bin (2.23-0ubuntu10) ... Setting up cmake-data (3.5.1-1ubuntu3) ... Setting up libjsoncpp1:armhf (1.7.2-1) ... Setting up cmake (3.5.1-1ubuntu3) ... Processing triggers for libc-bin (2.23-0ubuntu10) ... gina@asc2:~$ Next to load the Astroberry package git clone https://github.com/rkaczorek/astroberry-diy.git In Terminal gina@asc2:~$ git clone https://github.com/rkaczorek/astroberry-diy.git Cloning into 'astroberry-diy'... remote: Counting objects: 160, done. remote: Total 160 (delta 0), reused 0 (delta 0), pack-reused 160 Receiving objects: 100% (160/160), 79.47 KiB | 0 bytes/s, done. Resolving deltas: 100% (92/92), done. Checking connectivity... done. gina@asc2:~$ Now as mentioned above the commands to compile the Astroberry GPS and AltIMU need to be removed from the CMakeLists.txt file. To make editing easier I take the micro SD card out of the RPi and put it in my main machine and use the GUI editor.

Backing up the card contents then it's back to trying to install the Astroberry 3rd part drivers.

With cooling on LOW the camera temperature is hovering around 5°C but with cooling on HIGH it's going down to -10°C at the start of exposure and to -8°C at the end. This is with 30s exposure and 30s delay and a mild night though with some breeze to cool the fins. When there's no moon and the sky is really dark I can use continuous 60s exposures with a couple of seconds download time between. That will be the test.

30s exposure with gain at 96.

Casing assembled. The underside view shows the magnet in its blue ABS holder - the angle measuring chip on its carrier will be fitted into the groove on the end of the tube. The hole for the wires can also be seen.

That's alright then ?

Clouds have arrived.

Here are the component parts of the wind vane casing. Not the best prints but probably adequate. Top, middle and bottom.

Now designing and printing parts.

The whole rig would look like this :-

Here a cross-section diagram of the wind vane mechanism with the various parts shown in different colours for clarity. All the printed parts are either ABS or ASA, and where wanted, will be solvent welded (glued) with acetone. This design avoids using support material when 3D printing.

This is the arrangement I have in mind, requiring a relatively small amount of work.

I'm rather wondering if I'm making things more difficult for myself than needed. Using the magnetic direction measuring chip is good in some respects - it's accurate but far more accurate than needed and it needs to be on the end of the axle. Making a co-axial arrangement with the anemometer seems to be difficult. Having had time to let my brain work on this in the background I've come to the conclusion that this arrangement is not sensible. There are two possible arrangements that are easier - on each end of a cross-bar or axially with the wind vane below the anemometer with the wind vane on a larger ball bearing and different direction sensing. I had the latter arrangement before with a bigger wind vane and optical sensing with a Gray encoder. The commercial weather station I had before I decided to make my own had the wind instruments on the ends of a cross beam. The latter is the easiest of the two taking what I have already built.

I think the answer must be to save up for a ZWO camera - they are so much better than a DSLR.

Looking good ??

Started from square one again with Ubuntu MATE and AstroPi script to install loads of astro stuff. Called it asc2 this time with the idea of producing a replacement card for the ASC (if it all works).