This is an adapter to mount the Korg SQ-1 sequencer in an Eurorack modular synthesizer case.

For the bottom part, I designed two legs that prevent the SQ-1 to fall backwards inside the case and increase its stability (these are the only parts whose size depends on the rack case used), a 38HP x 7mm strip to cover the case's screw holes and two rings to connect it to the sequencer's side bolts and to the case.

The top part is a single 38HP x 37mm piece that not only fixes and keeps the SQ-1 from leaning forward, but also provides four 4x passive multiples. This piece has many beams on the back to make the front plate stronger: it would be very flexible without. It is connected using a couple of rings again, and fixed to the case with five screws.

Compared to a simpler metal plate adapter with a giant rectangular hole in the middle, this project has several advantages: the depth of the SQ-1 front panel is the same as standard modules, and everything fits in 38HP, which is the exact length of the sequencer (coincidence? I think not).

Power is supplied exploiting the SQ-1 battery room. I removed the batteries case and replaced it with a couple of diodes connected to the Eurorack 5V rail. This way the input voltage drops to ~3.3V, which is quite the same as using two AA batteries.