This week, we focused on testing the multiple sensor and vibration system, made progress on how the depth camera identifies ground level threats, and started to make physical parts for assembling the belt.
For the sensor and vibration system, we have finished developing both the arduino interface to communicate with the sensors and vibration units, as well as the python interface on the part of raspberry pi. After some basic testing, the serial communication works quite well, and we were able to operate the system with multiple sensors and vibrators active at the same time. We have developed a basic threat determining model in our python code, and conducted some testing to ensure that the system operates as expected.
In the testing process, we also realized that our vibration unit cables were extremely thin and fragile, and may not satisfy the requirements for a wearable device. Therefore, we decided to order new models for the vibration units that were a little more durable. We have also started to develop protective cases for our arduino board and breadboard circuits. Since we now have a finalized circuit connection model, we can simply build our circuits and continue our software testing without ever having to modifying the circuits. We plan to purchase existing arduino protection cases from amazon and use laser cutting and acrylic boards to build a custom case for our breadboard.
For detailed updates on the depth camera development, please see Ning’s report.