Study of HOME BAKE INSTRUMENTS HARMONICS (Patreon)

HOME BAKE INSTRUMENTS (HBI), known for creating gadget synthesizers in Japan, has uniquely ventured into selling Eurorack modules. This is an introduction to their very distinctive assembly method.

https://youtu.be/eqm-PVVNoss

https://home-bake-instruments.localinfo.jp/posts/54038979?categoryIds=4408352

• Single Board All components are mounted on the front panel. The power pin header is of the surface-mount type, and there are zero through-hole components.

• MCU Board It uses the Seeed xiao SAMD21. This board includes a 10-bit DAC, making it convenient for audio output. The CD4051 multiplexer IC compensates for the shortage of AD ports.

• Power Short Circuit Protection The vias on this board are treated with "overlay resist," ensuring that the vias are not exposed. The power lines passing through the vias are covered with resist, eliminating the concern of short circuits.