News Summary

• The concertina is an instrument that features heavily in European folk music, of which there are a variety of types.
• This instrument doesn’t have bellows, but its innovation is to simulate them through means of a load cell.
• The keys are Cherry MX switches with custom keycaps, mounted on a pair of PCBs.
• Driving the whole thing is a Teensy 4.0, and to avoid unfortunate accidents with ripped-out connectors there’s a USB extension lead as a bit of strain relief.