#1 First sketch of the concept

• Issue: too troublesome to do on both arms.
  Solution: Decided to stick to only our right arm 

  

#2 Testing with the different materials

• Materials tried: Nylon string, ropes, fishing line
  Decided to go with fishing line as it is strong, sturdy, and light weight

#3 Updated our Sketch

Decided to focus on 1 arm

and reduced the focus of design to only the elbow joint (instead of focusing on the entire arm) later on.

#4 Used a luggage scale to test the force required to lift the arm

• We measured the force needed to lift the arm (7.6kg) while carrying an object
  In order to determine the appropriate motor capable of lifting that weight.

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#5 Moving on to the prototype

• And with that, we decided to split our prototype into 3 sections:
  Physical / Motor / Software aspects
  which will be covered further in the next “Trial and Error” tab