udacity / robotics-nanodegree-issues

Public waffleboard to track Robotics Nanodegree Issues
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pick and place_ Geometric IK derivation #269

Open AbdelrhmanElagamy opened 5 years ago

AbdelrhmanElagamy commented 5 years ago

hey, I am in my first project "pick and place" I have already submit it once but it returned to me with this comment that I can not find its solution can any one help?? " Handled multiple solutions a) To state there are multiple solutions for theta5 b) write down those (they are 2. when you want to find the roots of x^2 = c you always have 2 solutions. The plus and minus of sqrt(c) ) c) Choose one based on whatever criteria d) does your choice affects theta4 and theta6 (if yes why, if no why. The way you solved for those angles determines the correct answer) "