Bradley’s Status Reports

This week, I spent time improving the pen tracking algorithm by taking into consideration acceleration data. I used the same methodology as our previous approach (application of rotation matrix + double integration) but instead limited it to a much smaller time scope. The acceleration informs …

This week I worked on focusing more on the orientation of the pen to better estimate the position of the cursor. I used the orientation to indicate which direction the “tip” of the pen would be facing relative to the user’s hand, which presumably would …

This week, I spent toying with the new IMU we received, the BNO055. The benefit to this IMU is it features a magnetometer and more accurate orientation readings. We had originally planned on using this new IMU alongside a software library – scikit kinematics, to …

This week, I worked more on the pen tracking algorithm as well as integration with mouse movement. After observations that the kalman filter was quite slow and didn’t result in a noticeably more accurate result, I removed that for now. I also observed that the …

This week, I worked more on the pen tracking algorithm. I implemented a multithreaded producer/consumer queue model for the software (producer is arduino sending accelerometer/gyroscope readings and consumer is taking those readings to decide where to move the cursor). We ran into the expected problem …

This week, I worked on the hardware and software prototyping of the pen. First, I constructed the circuit on a breadboard, connecting the arduino, accelerometer, and bluetooth module. After ensuring the accelerometer worked and accurately reported data through the serial monitor, I explored various options …

This week, we spent time together discussing, dividing, and working on the design proposal. Taking in the feedback from the presentation, we thought much more about implementation specifics, especially with the software modules interacting with each other. We spent more time researching the existing libraries …