Motion Study of Completed Hand Assembly

     Today we have a motion study of the entire hand assembly. Although the assembly itself was completed weeks ago in order to send it in for 3D printing, the group had never done a full motion study. Below is a video of each segment of each finger rotating 45 degrees over a period of 3 seconds. As you can see it follows the basic motion of an actual human hand. With the pieces we have missing unfortunately we will not be able to full replicate this motion on the real product. On the product we are presenting we have one finger performing this motion.

 



 

 

 

     Construction of the hand will be covered in a following post.

Servos and resistors arrived.

The servos that were ordered last week have arrived and now the process begins of fine tuning our code to properly match the flex sensor's range with the servo range.  Not surprisingly, it was cheaper to get a large container of many resistor values and pay no shipping through Amazon Prime than get a small package of 22K ohm resistors and pay shipping.

Laser Cut and 3-D Printed Parts Recieved

On Monday (12/9/13) the laser cut parts as well as most of the 3-D printed parts were picked up.  After taking an inventory of all the parts recieved against the parts submitted it was found that there were 5 pieces missing from the submitted 3-D printed parts.  It is assumed that another group grabbed these by mistake but this will present another challenge for the group as we will need to find a workaround to replace these parts with either something we fabricate or simply presenting an incomplete hand for the time being.  The laser cut parts fit together well and appear to be the correct dimensions.