@@ -52,8 +52,10 @@ With the goal of obtaining a better understanding of the significance of the phy
We tested the robot in the bathroom where the light could be switced off.
At first we placed the robot in the middle of the room, started the non-modified program, calibrated it with support from our hands. This attemp made the robot fell over - and thereby not balancing - almost immediately as seen in video 2.

*Video 2: The robot in a dark room to test Hurbains first condition for obtimal light sensor use.
[](https://www.youtube.com/watch?v=JAj4VaBqbhc)
* Video 2: The robot in a dark room to test Hurbains first condition for optimal light sensor use.
From this attempt we decided that we didn't trust our abilites to calibrate the robot in the dark using just our hands and eyes to measure when the robot was standing upright, why we decided to do calibration using the bathroom door.
##### Including condition 3: Using support during calibration
After the first, failed attempt, we tried calibrating the robot while it was resting against the door to the bathroom, as the door was perpendicular to the floor and flat. This allowed the robot to calibrate at a more steady, upright position - this, for instance, reduced the risk of us accidentally tilting the robot when pushing the start button after calibration (or actually during, since it goes wrong because the robot is still calibrating while we are trying to push the button). We placed the robot at a small angle to the door (see Video 2), as we assessed that the robot had too much weight in the front because of its sensor. This worked better, but the robot seemed to be clinging to the door.