Electric flute

thingiverse

It attempts to mimic a traditional recorder flute by featuring 7 "holes" on top and one at the bottom. The holes are actually covered with thin copper pieces that function as capacitive sensors. I suggest utilizing cut copper nails of suitable size, even though the photos currently display bare wires in a spiral pattern. The mouthpiece lacks acoustic properties and merely directs airflow towards an air flow sensor component called MPXV7002DP. The outer-facing tip has a tray where an Arduino Nano can be inserted after the wires have been soldered. The cap secures it in place, allowing a USB cable to be connected through it. There is also space for removing a thin cable if you want the serial TX to work with a real MIDI port as well. The firmware is located on GitHub and serves as a serial MIDI device that sends notes to a synthesizer when a specific finger combination and noticeable airflow are detected, adjusting the velocity based on the "power" of the airflow. Assembling and printing tips: There is an additional hole for passing through the air flow sensor wires; it would be wise to apply some hot glue after passing the wires to ensure an airtight seal. The upward-positioned model works well for printing, but cabling can be challenging. I have created a horizontally modeled two-part version that simplifies this process, although I have yet to attempt printing it and it requires gluing after cabling. I recommend using the upward-positioned model instead. Arduino firmware: https://github.com/jsalin/eflute