Pressure sensing for "Guitar Tutor"

In our project, we are planning to use FSR sensors to detect if a fret has been correctly pressed. To do that, we plan to put these sensors on the neck of the guitar below the strings. Therefore, as a first step towards our project, we tested the signal from the sensors, by communicating the values serially to a PC. We might need to detect the level of pressure on any of these sensors. For now, we are restricting ourselves to three levels of sensing pressure as we show in the figures below. We gathered readings using the arduino code sample below. We then used processing to visualize the sensor readings.

The fritzing diagram is as follows:

The pressure sensing levels can be visualised in Processing too. Following is the code for the visualization

The following is a screenshot of the plot:

Here is a video of our work.

Written on March 20, 2017