A special accordion midi encoder, with 48 inputs and even pressure control. Very narrow board (40 mm) to fit into any instrument, even the smallest ones.
Optical reader for 26 note music roll (John Smith universal)
New Optical reader, to transform roll holes into midi note. Very soon Available
Optical reader for 20 note music roll (The famous John Smith Busker)
New Optical reader, to transform the roll holes into midi note. Very soon Available