Knee motor issue
Hello Robotical team and everyone,
I have managed to print my Marty. Calibration after many attempts has been completed. But right now, I have an issue with the movement of the right or left knee. I tested all motors using all Scratch commands and it worked fine. However, using the calibration tool when I click walk or through Scratch when I click a command like Walk 2 steps etc., I have this issue that you can see in the video attached. When I hold Marty in the air, motors work fine, but on the table, it seems that the knee needs a support in order to return back to the straight position.
I assume that this kind of support only the foot-springs can offer. But I think the 3d printed parts (foot in this case) are different from the mass production parts and they do not have the clippers where you can attach the foot springs.
Do you think that I can find solution without foot springs? Have you faced the same problem? Is that the right solution to my issue or do you think I can support the knee with other solution?
Thank you very much in advance
ps1. here (https://www.dropbox.com/s/q2x35b3ekap3fcv/V_20180212_103740.mp4?dl=0) you can see the video with the knee issue ps2. here (https://www.dropbox.com/s/iccsi5f6t6n15nd/P_20180212_104153.jpg?dl=0) and here (https://www.dropbox.com/s/lnb79nm5rdggadl/P_20180212_104227.jpg?dl=0) I have attached the 3d printed foot that is quite different from the one of the mass production