Voxmachina SIGMA Function / Ramp Generator DIY PCB Kit Attenuator The 4NOT is essentially just

The 4NOT is essentially just a comparator

Simply attach directly to a spare header on your power rail (making sure the -12v end aligns up correctly) and this will supply the entire rail with +5v

used for inverting clock or gate signals

Our passive diode rectifier now in 1U

Voxmachina SIGMA Function / Ramp Generator DIY PCB Kit Attenuator The 4NOT is essentially justA modern approach to the Serge ramp generator, provides v oct control and is also oscillating by default unless something is connected to the trigger input channel, provides multiple outputs, BP, DC and AC coupled outputs, also EOC and ! EOC outputs, when self patched for example from AC output into CV input can be used to modulate curve to be linear or exponential, also provides a switch to change modulation target to be ramp rise, both or ramp fall.