SKETCH ONE: process

Implementing pressure sensor position

Today we were able to complete the circuit system and use anti-static foam as an alternative for pressure sensors. With this material it's soft enough so that when it goes into contact with the users skin they won't feel uncomfortable. We also implemented 4 pressure sensors (2 on each shoulder strap) and positioned them based on how we think that the user might be carrying their backpack.

pressure sensor prototype programming

By using 4 sensors on the shoulder strap, we can calculate the average when all the sensors are being touched. We programmed the sensor in situations where either one, two, or three sensors are being touched the average will not be affected if either one is missing. We implemented the complex wires into one circuit board that was soldered and put together.

For the coming up week, we will be implementing the resistance on the anti-static foam pieces as well as implement the "idea" weight range for either young males or females. We consider the different body proportions between the two genders and found research studies that back up our concept.