Monday, April 30, 2012

Agenda for Wednesday May 2nd


Agenda/Presentations


  • Critical path to operational Rep Rap – Team Rep Rap to lead discussion
  • Scan/Tilt Prints Update – Tuan to lead discussion
  • FOBO SolidWorks Modeling Update – Team Robotics to lead discussion
  • Next Generation FOBO Documentation and Planning – George to lead discussion
  • Announcements and Rep Rap Documentation  – Gianela to lead discussion
  • Project Manager meetings with the Program Manager
  • Program Manager meetings with the President  

Thursday, April 26, 2012

Jonathan has pointed out that our low battery solution only safes FoBo - what we also need to do is cut power to the robot after the shut down sequence is completed to avoid damaging the battery. Looks like a job for Chandra and Tuan.

Monday, April 23, 2012

Agenda for Wednesday April 25th, 2012


Agenda/Presentations
  • Critical path to operational Rep Rap – Team Rep Rap to lead discussion.
  • Battery Protection – Chandra and Tuan to lead discussion.
  • 4017 Timer – Anthony to lead discussion.
  • FOBO Solidworks Modeling Update – Team Robotics to lead discussion.
  • Next Generation FOBO Documentation and Planning – George to lead discussion.
  • Announcements and Rep Rap Documentation  – Gianela to lead discussion.
  • Project Manager meetings with the Program Manager 

Sunday, April 15, 2012

Old Team's Grades

Hi Team,
Just a friendly reminder to send Professor Hill an email with your old team's grades.
(Scores must have a mean of 3.5)

Thanks,
Gianela Gozalo
Program Manager

Agenda for Wednesday April 18th

Hi guys, 
Below is our next meeting's agenda:


Agenda/Presentations for Wednesday April 18th, 2012
  • Demo/Talk (lessons learned, critical path to operational RepRap, and documentation) – Team Rep Rap to lead discussion..
  • Battery Protection - Chandra to lead discussion.
  • Battery Protection Code - Tuan to lead discussion.
  • FOBO Solidworks Modeling Update – Team Robotics to lead discussion.
  • Next Generation FOBO Documentation and Planning – George to lead discussion
  • Announcements and Rep Rap Documentation   Gianela to lead discussion
  • Project Manager meetings with the Program Manager 

See you next week! :)


Tuesday, April 10, 2012

Running Man

I am not sure but I believe I am now the proud owner of the most expensive plastic running man with a hat on the planet.

Congratulations to the RepRap Team!

Monday, April 9, 2012

Jonathan (FOBO creater)

Hey everyone,
  I've never used Solidworks before (although all of the MEs where I work really like it), so I won't be any help on that front I'm afraid.  You might try using Blender to export to a different file type.  Blender supports exporting to 7 formats, and is of course always free (and for every operating system).  Unfortunately DXF isn't one of the supported export types in Blender, so you could try exporting to a different format (maybe 3ds) and then converting this to DXF files.

To export in Blender :
  1. select the part to export (right mouse click)
  2. from the main menu File/Export/"your format"
  I've done a little bit of simulation with the Bullet physics engine that is included with Blender for some earlier prototypes, but I've never done anything for FOBO.  I'm curious to see what you guys can do with Solidworks.  Keep in mind that the Blender file is using inches as the unit (the stl files were converted to mm ... yes it is lame to mix units). Hope this helps!

Jonathan

Sunday, April 8, 2012

Agenda for Wednesday April 11th, 2012

Hi guys, 
Below is our next meeting's agenda


Agenda/Presentations for Wednesday April 11th, 2012
  • RepRap/Critical Path Steven Peterson to lead discussion.
  • Manufacturing Status of work orders in process and New Blog – George to lead discussion
  • Battery Protection Chandra to lead discussion.
  • Explanation to Quantify “a bit of additional weight” Tuan to lead discussion.
  • FoBo Update and Announcements – Gianela to lead discussion
  • Corporate Goals and New Schedule  - Gianela to lead discussion
  • Project Manager meetings with the Program Manager 

If there is anything you would like to add or present next meeting, let me know :)
See you next wednesday!


Friday, April 6, 2012

.stl to CAD

A few issues:

1. I have found that although I can convert from a .stl extension to a .sldprt (Solidworks) file extension the parts are not editable because .stl uses a picture based mesh to create its parts. STL will convert the drawings made in any software into many triangles which cannot be edited. You will read online that it is in fact editable when converting between the two but from experience, you are pretty much redrawing the object because of all the errors that arise when converting between the two formats. Someone compared the conversion of .stl to a 3D software as putting together a shredded apple; not exactly doable.

2. According to the FOBO documentation found online, the original FOBO is 4.5" x 6" x 9.5". Assuming that those dimensions are depth, width, then height, the scan and tilt dagu kit along with the designed platform are almost perfect size. The width of the platform is approximately 3.5" wide so it is slightly (~3") thinner than FOBO's center.

3. The question posed before about Blender: How can you see where the drawings are in reference to each other? Like when Hill asked for the 2 cubes to come together at a specific corner. From what I have read this is actually not doable in Blender because it is made for what someone called "pretty pictures". This actually causes a GIANT problem for people going from a Blender .stl file into a 3D file because there are gaps and face faults in the drawing.

All of the above is from experience and if you have a way of converting between the two effectively, let me know because I want to create an assembly of FOBO with the new scan and tilt platform so that we can effectively come up with a design for his upper portion. Otherwise it is pretty much a guess and check.

With all that said, can we ask the FOBO god to send us a 3D version of the drawings not in .stl? :)

Wednesday, April 4, 2012

John Dowdall FoBo Documents Added

As I mentioned in class today, Jonathan Dowdall has added us to a number of FoBo Google Documents. I have found them and moved them into our class folder in a new folder named FoBo. Let me know if you can not find them.
Ready To ROLLLLL!!

Current Critical Path

The RepRap team is currently working on the critical path obstacles. These include:

-New plate of printed parts from Ben
1. Large gear
2. Small gear
3. X-carriage
4. Side brace (mustache)
-Simplified fan duct design
-Calibration with Marlin (Sunny)
-First test print (20x20MM cube)


Please post any questions as a comment to this blog post. We will post an update this weekend with some photos showing the progress of the printer.

Steven

Hi Team

Hi :)
Welcome Bloggers