Digital Pen(Pencil)
So, we started with assembling a rough prototype for our project. We plan to use accelerometer along with other sensor to predict the word or alphabet written.
Prototype
We connected the accelerometer to our Arduino board and got some initial measurement first. After that we mounted our accelerometer on to a pencil with wires connecting it to Arduino board.
Data Visualization
Here are few visualization that we made from the data that we collected from our accelerometer
1) X - axis
2) Y - axis
3) Z - axis
4) When pencil was kept on table (stable state)
5) While writing: We have marked the waveform that where formed while writing 0 and 1.
6) Visualization using Processing
Future Work
1) We need to stablize the values, as we can see the curve for Z axis in sinewave in form. We need to calibrate and decide what should be the initial/resting position
2) We probably should look into using pressure sensor or sound sensor to decide when actually the writing has begin.
3) Create a proper mount for the accelerometer to fit on the pen/pencil, so that we can avoid noise and get some stable reading.