I’ll compare it to the Frequency Central design and see if there’s anything I could add to make it better. For the moment, here’s a photograph of my kit.
The big electrolytic capacitors C5 and C6 are 4700uF 35V. C1 is 220uF 16V, and the other three (C2, C3 and C4) are 1uF 50V.
R1 is there to protect the LED from the 12V RMS AC from the wall wart. The resistor colour code reader app tells me it’s 1Kohm but that’s what it said last time I tried it, on a different resistor.
There are three regulators: 7812, 7912 and (for +5V) 7805. There are three identical diodes: 1N4001.
You also get a quantity of male 2.54mm header, a barrel socket for the wall wart, and a 16-pin keyed box header for Eurorack. There is a space on the circuit board for an on-off switch but no switch is provided so I’ll make a wire bridge instead.