Gator

Do you like combining gates?

This is a 2HP passive gate combiner, simply 7 diodes and a 100k pull-down resistor. Feed it a bunch of gates and get them combined at the output. As it is passive there will be a 0.6V voltage drop to 4.4V but should be fine for 99% of Eurorack modules, which usually trigger on 0.5-1V signals. If that is a drama, install schottkys such as Tayda: A-6786.

Just make sure the end of the PCB, where the 100k is, goes at the bottom of the panel.

Anyway, this is probably one of the easiest NLC modules to build and a nice, gentle introduction to soldering smd.

https://www.nonlinearcircuits.com/modules/p/gator