At the moment the most significant risk for our project is correctly integrating all of the parts into our 3D pen case and making sure we mount the optical flow sensor correctly onto the tip of the pen. If any of this is implemented or positioned incorrectly we could lose out on a lot of accuracy with our surface tracking. These risks are being managed by constantly going through different pen case iterations to see which one works the best for our design and overall just doing a lot of testing of the individual components and the components altogether in order to perfect our tuning of the design. The contingency plan we have is plenty of backup components like MCUs and optical flow sensors just in case something breaks and we also left a good amount of time for testing just in case we need to make small design pivots.
The only design changes we’re considering is replacing our initial button integration with a pressure sensor. This allows us to eliminate the need for a user to continually press a button to change between move and draw modes, but rather use pressure thresholds, which feels closer to natural writing. Our schedule remains the same.
Here are some progress pics:
