Typically, when we think of a music sequencer, we envisage LEDs and boards covered in buttons. Of course, there are naturally other ways to build such a device. MesoTune takes a different tack ...
The Magic mirror-like magnet. The brightness of the transmitted light from the magnet changes depending on whether the material is viewed from the front or the back. (Image: Kouji Taniguchi) OIHP-type ...