copilot

1. Expand your Hardware

   • Add another 12 capacitive touch sensors to your circuit. If you are using a specific capacitive touch IC, ensure it has enough channels to accommodate these new sensors, otherwise you may need to add another IC.
   • Connect these sensors to the free digital or analog pins on the Arduino Micro. If you run out of pins, you might need to use a multiplexer or an I/O expander.
   • Provide each of these sensors with the necessary support circuitry (usually a resistor and a capacitor).

2. Modify the Firmware

   • Update the Arduino code to handle these additional inputs. This will involve setting up the new inputs in the setup() function and reading these inputs in the loop() function.
   • The MIDI messages generated by these additional keys will need to be one octave higher than the existing keys. This can be done by adding 12 (one octave in MIDI note numbers) to the note number associated with each new key.

3. Update the Display

   • Depending on how your display is set up, you may need to modify it to indicate which octave is being played, especially if you plan on allowing the user to switch between octaves.

datnapafunk

copilot

1. Force-Sensitive Resistors (FSRs): These are a type of resistor whose resistance changes when a force or pressure is applied. They can be used to measure the intensity of a key press.
2. Piezoelectric Sensors: These sensors generate an electrical charge in response to applied mechanical stress. They can be used to measure the velocity of a key press by analyzing the generated voltage.
3. Capacitive Sensors with Pressure Sensing: Some capacitive sensors are able to measure the size of the touched area, which can increase when more pressure is applied. This data can be used as a proxy for velocity. However, this is not as accurate as the other methods and may not work well with users who have different finger sizes.
4. Hall Effect Sensors: These sensors measure the strength of a magnetic field. By placing a magnet in the key and a Hall Effect sensor underneath, you can measure the distance between the key and the sensor, which can be used to calculate the velocity of the key press.
5. Optical Sensors: These sensors measure the amount of light that is blocked by an object. By placing the sensor underneath the key, you can measure the velocity of the key press by analyzing the change in light intensity.