Yet another MIDI concertina project !!!

[RAc]

3 minutes ago, alex_holden said:

Could you maybe make two stacked PCBs, place the switches on the bottom board partially overlapping the ones on the top one, and give the outer rows of buttons extra-long pins that pass through holes drilled in the top board to actuate the bottom layer of switches?

I pondered that as well. Basically doable, but tricky design  given the curved shapes of the rows. Also, it would add to the thickness of the button assemblies.

[Don Taylor]

Post deleted.

 

 

Edited January 31 by Don Taylor

[nguyenvy]

Hi,

Here are some pictures of:

- Hall sensor keyboards: 12x14mm button spacing, analog sensor  allows to setup trigger point of each single button.

- Air bellows module: should be good enough for air pressure sensor

- Wooden ends: 190mm  

- Completed concertina: working well, the power light is on.

 

I am making keyboards for Anglo 40 buttons, Hayden Duet 48 buttons and Crane Duet. 

Hoping will complete very soon.

 

Vy Ngo