You can use the ER1's camera (included with purchase) or add an extra camera, which will enable you to perform multiple actions simultaneously. Obstacle avoidance also works with the addition of theIR Sensor Pack, which your ER1 can use to intelligently navigate around a space with "object presence" detection that tells it when an object is near. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.