Difference between revisions of "SatNOGS Ground Station v2"

From Bloominglabs
Jump to: navigation, search
Line 2: Line 2:
  
 
More information about [https://satnogs.org SatNOGS can be found here.] They won the awesome 2014 Hack-A-Day challenge, their [https://www.youtube.com/watch?v=z92ALYRHOzc submission video is here].
 
More information about [https://satnogs.org SatNOGS can be found here.] They won the awesome 2014 Hack-A-Day challenge, their [https://www.youtube.com/watch?v=z92ALYRHOzc submission video is here].
 +
  
 
== Parts ==
 
== Parts ==
Line 9: Line 10:
  
 
This [http://satnogs.dozuki.com/Guide/SatNOGS+Ground+Station+v2+Mechanical+Assembly/1 link has] a bill of materials and assembly directions. Please note that the links to parts from this page link to the metric versions so be careful.
 
This [http://satnogs.dozuki.com/Guide/SatNOGS+Ground+Station+v2+Mechanical+Assembly/1 link has] a bill of materials and assembly directions. Please note that the links to parts from this page link to the metric versions so be careful.
 +
 +
 +
== Laser cut parts ==
 +
3D printing parts is awesome, but incredibly slow. I've taken the imperial STL files and converted the ones which are suited for laser cutting to SVG's. The axis and worm gears are not included as they can't be cut correctly, these must still be sourced by 3D printing. Material thickness is fairly critical for laser cutting. Sheet 1 needs to be cut from 3/8" (.375) thick material. Sheet 2 needs to be cut from 1/4" (.25) thick material. This is especially important because the axis gear spacer needs to be the correct thickness. Also, sheet two has the homing sensor holder which is in two pieces. If you look at the STL for the part it will be obvious where the small rectangle needs to be glued or otherwise mounted.
 +
 +
Further finishing details: red lines on any parts should only be ran at minimal power for marking purposes only. All other colors should cut all the way thorugh the material. The axis sides require 6 screw holes plus two long holes drilled for the stepper motors to mount. The homing ring must have the "nose" filed or sanded down so that it can fit between the optical sensor lobes. Lastly, the bearing holder cup requires hand filing between the tabs so that the axis gear can fit closely to the worm gear. Also the bearing hole needs to be counter-sunk deep enough to completely hold the bearing. Technically it is possible to laser this hole out but it would be a slow process. As I mentioned earlier, on all of these parts there are markings (in red in the drawings) to give you easy indicators for manually finishing the parts out.
 +
 +
* [[http://bloominglabs.org/images/4/40/Part_sheet_01-.375.svg Part_sheet_01-.375.svg]]
 +
* [[http://bloominglabs.org/images/e/ed/Part_sheet_02-.25.svg Part_sheet_02-.25.svg]]
 +
 +
Additionally, all of the individual parts are here if you want to reconfigure how they are cut.
 +
* [[http://bloominglabs.org/images/e/e5/TrackingBoxV2.zip TrackingBoxV2.zip]]
  
  
 
[[Category:Radio]] [[Category:Dosman_projects]]
 
[[Category:Radio]] [[Category:Dosman_projects]]

Revision as of 02:24, 24 February 2015

The intent is to make and deploy a SatNOGS ground station at Bloominglabs. This is a satellite tracking system with azimuth and elevation control to point VHF and UHF antennas at satellites as they pass overhead. The SatNOGS project consists of 4 separate projects actually, the ground station is just focused on a 3D printable and easy to build azimuth and elevation tracking system.

More information about SatNOGS can be found here. They won the awesome 2014 Hack-A-Day challenge, their submission video is here.


Parts

The original project is sized to use all metric PVC for the 3D printed parts. In the US metric PVC is hard to find, this repo has parts resized for American PVC sizes:

This link has a bill of materials and assembly directions. Please note that the links to parts from this page link to the metric versions so be careful.


Laser cut parts

3D printing parts is awesome, but incredibly slow. I've taken the imperial STL files and converted the ones which are suited for laser cutting to SVG's. The axis and worm gears are not included as they can't be cut correctly, these must still be sourced by 3D printing. Material thickness is fairly critical for laser cutting. Sheet 1 needs to be cut from 3/8" (.375) thick material. Sheet 2 needs to be cut from 1/4" (.25) thick material. This is especially important because the axis gear spacer needs to be the correct thickness. Also, sheet two has the homing sensor holder which is in two pieces. If you look at the STL for the part it will be obvious where the small rectangle needs to be glued or otherwise mounted.

Further finishing details: red lines on any parts should only be ran at minimal power for marking purposes only. All other colors should cut all the way thorugh the material. The axis sides require 6 screw holes plus two long holes drilled for the stepper motors to mount. The homing ring must have the "nose" filed or sanded down so that it can fit between the optical sensor lobes. Lastly, the bearing holder cup requires hand filing between the tabs so that the axis gear can fit closely to the worm gear. Also the bearing hole needs to be counter-sunk deep enough to completely hold the bearing. Technically it is possible to laser this hole out but it would be a slow process. As I mentioned earlier, on all of these parts there are markings (in red in the drawings) to give you easy indicators for manually finishing the parts out.

Additionally, all of the individual parts are here if you want to reconfigure how they are cut.

Personal tools