SEA Cad files now available!

This is post 3 in the OpenSEA project, if you have missed part one and two see post one for some background.

I started this project with FreeCAD to design the parts, but now i am switching over to OpenSCAD, mainly because of the benefits of SolidPython. I have forked the SolidPython repository and will extend it to fit the needs of the OpenBiped project. One of the big benefits of SolidPython is the ability to auto-generate a Bill Of Materials (BOM) with cost and 3d printing time, i also plan to extend it with weight and filament usage.

Here is an example output: (not a complete SEA, nor real print time or cost for 3d printed parts)

Desc.	Count	Unit Price	Total Price	Print Time
A2212	1	RMB 31.28	RMB 31.28	0
Fibre Glass Rod 4mm	4	RMB 2.78	RMB 11.12	0
A2212 Attachment	1	RMB 0.20	RMB 0.20	32
ESC 40W	1	RMB 31.28	RMB 31.28	0
3d Printed Spring	1	RMB 0.50	RMB 0.50	30
Shaft Adapter 3.17:4	1	RMB 0.50	RMB 0.50	8
SEA sled side bracket	2	RMB 0.50	RMB 1.00	32
Screw Rod m4	1	RMB 2.00	RMB 2.00	0
SEA Top Cap	1	RMB 0.50	RMB 0.50	30
Total:
Cost:		RMB 78.37 (~ 10 Euro, ~ 10 USD)
Print time:	132	minutes
Part count:	13

My goal for the OpenSEA project is to have a script where you specify what loads you want the system to handle, then the parts will be auto-generated and you will get a BOM with print time and weight and cost of the construction.

If you want the design files, they are available here. Note that this is very much a work in progress.

I have begun to test 3d printed springs in the (Finite Element Method) FEM workbench in FreeCAD. With some basic analysis i hope to decrease the number of parts needed to be printed and tested to get reliable results from the spring generator script. I will shortly release a post with a how-to/walkthrough.

And regarding the "HowTo re-flash a SimonK ESC" I wrote about in my last post, its coming, but i will dig a bit deeper then just reflashing ;)