We as a group had difficulty to get the magnetometer sensor to detect the electromagnet as it was very noisy and hard to triangulate the source of the magnetic field accurately.
If we had more time we would explored IR sensor and triangulation as shown in this Cornell project https://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/s2004/rd73/476finalpro.htm
or hack a indoor navigation systems like;
It was hard to get the nodding and panda arm raise as we expected. Couple of reasons was the torque of the servo motor was not enough and the stuffed doll form factor was resisting as we repurposed it for the proof of concept. If we could have built the panda doll from scratch factoring in the arm and nodding structure we could have got the working more as we wanted.
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