Next we will designing the rest of it in hopes of getting some sort of working demo before our presentation Friday.
Friday, October 11, 2013
Last weekend (I know it was a while ago, just forgot to post), we worked on making the elbow joint for the arm. This would be where the potentiometer lies to read the A/D values and determine position of the arm. The material used was delrin mainly because it's easy to machine and because it's anti-friction so it makes for a good moving joint. The part was CNCed and the pot was mounted with JB Weld epoxy. I wrote a short Arduino program to measure the A/D value of the pot to center it in the joint. We drilled holes at the ends of the joint to insert threaded rod to connect to the rest of our mounting hardware. Here is a picture of the joint clamped together while it dries: