I've just put an order in for the following lengths of 20x20 aluminium extrusion:
500mm x 2
100mm x 4
This will give me the parts I need to:
- Build my slide
- Mount my Arduino Pro Micro
- Mount my Air Pressure Sensor
- Mount my encoder for pitch changes
Once the slide is built I should have a fully working slide-based MIDI controller :-)
Following that it will be the construction of the back frame.
I am contemplating changing the frame from a simple 2D section to a 3D box section, allowing me to mount a forward facing speaker for a more trombone-like output.
I could always add a secondary speaker at the back of the frame behind the main speaker for some interesting chorus-like effects or stereo output (playing harmonies, stereo delay etc).